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Two-piece Girodisc brake rotors with curved slots with black rotor hats and gold-colored hardware.

GiroDisc Racing Brakes & Technologies A1-282 Girodisc BMW G8X M2, M3, M4 380mm Front Rotors $1,350.00

A1-282 Girodisc 380mm Front Rotors Price: $810.00 These Girodisc A1-282 2-piece front rotors are a direct bolt-on for the G87 M2, G80/G81 M3, and G82/G83 M4 without carbon ceramic brakes. Fully floating construction reduces unsprung/rotational mass while improving cooling, and they retain the factory calipers, ABS logic, and brake bias. Vehicle Fitment BMW G87 M2 (non-CCB) – Front BMW G80/G81 M3 (non-CCB) – Front BMW G82/G83 M4 (non-CCB) – Front High-Carbon Rings, 72 Curved Vanes The rotor rings are machined from high-carbon iron to Girodisc specifications. 72 curved vanes act as a centrifugal pump, drawing air through the hub for efficient heat rejection during repeated hard stops. The 2-piece design allows you to reuse the aluminum hats and refresh with D1-282 rings later. Features Direct OE replacement for 380 mm front rotors (non-CCB) 2-piece floating design reduces unsprung weight High-carbon iron rings; reusable 6061-T6 aluminum hats 72 curved vanes for strong airflow and cooling Assembled with cadmium-plated pins, spring clips, Belleville washers Manufactured and assembled in Bellingham, WA Sold/priced per pair A1-282 FAQs Minimum service thickness? Replace when rings reach 34 mm or sooner if a crack reaches the edge. Do I need new calipers or brackets? No — bolts to factory hubs and works with OE calipers. Which replacement rings match? D1-282 (380×34) front replacement rings. Pad compatibility? Works with OE-shape pads and performance compounds; bed per pad manufacturer. Related Products D1-282 Girodisc BMW G8X 380mm Front Replacement Rings A2-282 Girodisc BMW G8X M2, M3, M4 370mm Rear Rotors D2-282 Girodisc BMW G8X 370mm Rear Replacement Rings

GiroDisc Racing Brakes & Technologies A2-322 Girodisc BMW G8X M3, M4 Rear Iron Rotor Conversion $1,350.00

Girodisc BMW G8X M3, M4 Rear Iron Rotor Conversion These Girodisc A2-322 2-piece rotors convert the rear 380 mm CCB setup on G8X M3/M4 to high-carbon iron while retaining the OEM CCB calipers. No permanent mods — swap rotors and run the factory iron pad shape for the rear calipers. Vehicle Fitment BMW G80/G81 M3 with CCB – Rear BMW G82/G83 M4 with CCB – Rear Built for Heat, Quiet on the Street High-carbon iron rings with curved vanes act as a centrifugal pump to move air through the disc for consistent temperatures. Spring-preloaded floating hardware allows thermal growth without the rattle of loose float systems. Features Direct CCB-to-iron conversion; no coding required 2-piece floating construction reduces unsprung/rotational mass Curved-vane rings for efficient cooling Reusable aluminum hats; cadmium-plated pins Manufactured and assembled in Bellingham, WA Sold/priced per pair Girodisc A2-322 FAQs Which pads do I need? Use the factory iron rear pad shape for the G8X CCB calipers. Parking brake compatibility? Fully compatible; the hat offset maintains OE parking brake operation. Rear rotor size with this kit? 380 mm, matching the CCB system diameter. Minimum service thickness? Replace rear rings at 26 mm or sooner if a crack reaches the ring edge. Related Products D2-322 Girodisc BMW G8X Iron Conversion Rear Replacement Rings A1-322 Girodisc BMW G8X M3, M4 Front Iron Rotor Conversion D1-220 Girodisc BMW F8X/G8X 400mm Front Replacement Rings

GiroDisc Racing Brakes & Technologies A1-318 Girodisc Cadillac CT4-V Blackwing Front Rotors $1,350.00

Girodisc Cadillac CT4-V Blackwing Front Rotors These Girodisc A1-318 2-piece front rotors are a direct bolt-on for the Cadillac CT4-V Blackwing. The fully floating assemblies reduce unsprung weight and improve thermal management while retaining OEM calipers, ABS logic, and brake bias. Vehicle Fitment Cadillac CT4-V Blackwing – Front High-Carbon Rings with Curved Vanes Proprietary high-carbon iron rings use curved internal vanes to draw cooling air through the disc. Reusable 6061-T6 aluminum hats and cadmium-plated high-strength drive pins control thermal growth and deliver quiet street manners with race-ready float. A1-318 Girodisc Cadillac CT4-V Blackwing Front Rotors Features Direct OE replacement; no modifications required 2-piece floating design reduces unsprung/rotational mass Curved vane internal geometry for strong airflow and cooling Reusable aluminum hats; hardware engineered for quiet operation Manufactured and assembled in Bellingham, WA Sold/priced per pair A1-318 Girodisc Cadillac CT4-V Blackwing Front Rotors FAQs Do these change pedal feel or ABS? No — rotor geometry preserves factory brake balance and ABS calibration. Which replacement rings match the A1-318? Use D1-066 380×34 mm front replacement rings. Are OEM pads compatible? Yes — works with OEM and performance pad compounds; follow pad manufacturer bedding. Track suitability? Yes — high-carbon metallurgy and floating hardware are designed for repeated high-heat cycles. Related Products D1-066 Girodisc 380×34 Front Replacement Rings A2-318 Girodisc Cadillac CT4-V Blackwing Rear Rotors D2-318 Girodisc Cadillac CT4-V Blackwing Rear Replacement Rings

GiroDisc Racing Brakes & Technologies A1-308 Girodisc Mercedes 360mm Front Rotors $1,350.00

A1-308 Girodisc Mercedes 360mm Front Rotors These Girodisc A1-308 2-piece slotted front rotors are a direct OEM replacement for 360 mm front discs on select Mercedes-AMG models. Bolt-on fit with stock calipers; no modifications required. Vehicle Fitment Mercedes-Benz E63 AMG (W212) 2010–2014 – Front (360 mm) Design & Performance High-carbon iron rings with 48 curved internal vanes draw cooling air through the rotor. Floating two-piece construction reduces unsprung weight while reusable aluminum hats allow ring-only replacement. Features Direct OEM replacement (360 mm) for listed AMG applications 2-piece floating rotor reduces unsprung weight vs. OE Slotted face improves pad refresh and debris evacuation High-carbon iron rings; reusable 6061‑T6 aluminum hats Approx. 23.6 lb per rotor vs. ~34.5 lb OE (application dependent) Manufactured and assembled in Bellingham, WA A1-308 Girodisc Mercedes 360mm Front Rotors FAQs: Do these rotors require new calipers or brackets? No. They bolt to the factory hubs and work with OEM calipers and pads on the listed applications. Are they directional? Yes. Each rotor has directional internal vanes; install left/right as marked to ensure proper airflow. What pads are recommended? They are compatible with OEM pads and popular street/track compounds (e.g., Ferodo DS1.11, Pagid, Hawk). Bed-in per the pad manufacturer. How do they compare to OE one-piece discs? Lower rotating mass and better heat rejection reduce fade and can improve response on track. Related Products A1-308 Girodisc Mercedes 360mm Front Rotors A2-148 Girodisc Mercedes 360mm Rear Rotors D1-308 Girodisc Mercedes 360mm Front Replacement Rings D2-123 Girodisc Mercedes 360mm Rear Replacement Rings

GiroDisc Racing Brakes & Technologies A1-153 Girodisc Porsche Carrera, 981, 718 Front Rotors $1,350.00

Girodisc Front Rotors for Porsche Carrera, 981 / 718 – Includes Spacers & Bolts Upgrade the front braking system on your Porsche Carrera, 981, or 718 with Girodisc 2-piece front rotors. This system is a direct replacement for the OE discs, with the addition of the included caliper spacers and bolts. Rotor diameter increases to 350 mm from the factory 330 mm, delivering improved braking torque and greater thermal capacity for consistent performance. A1-153 Vehicle fitment • Porsche 911 Carrera (non-Turbo) with standard 330 mm front brakes (front axle).• Porsche 981 / 718 Cayman & Boxster with standard 330 mm front brakes (front axle).• Supplied spacers and bolts adapt OEM calipers to the larger 350 mm Girodisc rotors. Note: Always verify wheel and caliper clearance when upsizing to 350 mm rotors. Lightweight, high-performance rotor engineering The rotor hats are precision-machined from U.S.-sourced 6061-T6 aircraft-spec aluminum. The iron rotor rings are cast in the USA using Girodisc’s proprietary high-carbon iron alloy, then machined in-house for exacting tolerances. A curved vane design actively pumps cooling air through the disc under braking, improving fade resistance during demanding use. A1-153 Features • Direct replacement upgrade with supplied caliper spacers and bolts• 350 mm diameter vs. OEM 330 mm for greater braking force• Proprietary high-carbon cast iron rings, cast and machined in the USA• 6061-T6 aluminum hats, black anodized• 10 high-strength alloy steel drive pins, cadmium plated for corrosion resistance• Floating rotor system with anti-noise spring washers• Self-centering rotor float improves pad alignment under heat• Replaceable rings allow lower long-term operating cost• Sold/priced in pairs Related Products Girodisc D1-153 Front Replacement Rings Girodisc A2-153 Rear Rotors Girodisc D2-035 Rear Replacement Rings Service guidance • When the iron rings reach minimum thickness or show fatigue cracking, replace only the rings while reusing the aluminum hats and hardware.• Replacement D1-135 rings are available separately for cost-effective service. The Girodisc A1-135 front rotor system transforms your braking with increased diameter, improved cooling, and precision floating construction—all while allowing economical service down the road.

GiroDisc Racing Brakes & Technologies A2-388 Girodisc Lotus Emira Rear Rotors $1,350.00

Girodisc 2-Piece Rear Brake Rotors for Lotus Emira A2-388 Vehicle fitment • 2022+ Lotus Emira (rear axle) Note: Confirm rotor diameter, hat spacing, and caliper clearance on the specific vehicle before purchase. Upgrade the rear braking performance of your Lotus Emira with the Girodisc A2-388 2-piece rotor assembly. Engineered for both street and track use, these rotors help reduce unsprung mass and maintain the factory parking brake function while boosting thermal control under heavy braking. Precision engineered for performance The rotor rings are machined from a proprietary high-carbon iron casting designed by Girodisc. With 48 curved internal cooling vanes, the rotor acts like a centrifugal pump to pull air in through the hub, enhancing cooling even under aggressive use. The 2-piece design reuses the aluminum hat so you can replace just the rings (part number D2-388) when they wear. A2-388 Features • Direct replacement for OEM rear rotors on Lotus Emira• 350 mm diameter × 32 mm thickness• Proprietary high-carbon iron rotor rings• 48 curved-vane internal cooling design• 6061-T6 aluminum hats, black anodized finish• Fully floating design with drive pins, Belleville washers, and spring clips• Manufactured in-house in Bellingham, WA using domestic materials• Replaceable rings available separately (D2-388)• Service limit: minimum thickness 30 mm; replace if cracks reach ring edge Service & Maintenance • Replace rotor rings (D2-388) when thickness ≤ 30 mm or if cracks reach the edge.• Retain and reuse the Girodisc hats, pins, and hardware during ring replacement.• Always torque fasteners to manufacturer spec and follow proper bedding procedures. Frequently Asked Questions Does this retain the factory parking brake? Yes — the design preserves parking brake function. Can I only replace rotor rings, not hats? Yes. The hat is reusable; the replacement rings are sold separately as D2-388. Are these street-friendly? Yes. The floating design is engineered to operate quietly for street use while providing race-level performance. When should I replace the rotor rings? When thickness reaches 30 mm or when cracks approach the ring’s edge. Related Products Girodisc A1-388 Front Rotors – Lotus Emira Girodisc D1-388 Replacement Front Rotor Rings Lotus Emira Rear Caliper Rebuild Kit Lotus Emira Rear D2-388 Replacement Rings Lotus Emira Front Caliper Rebuild Kit Enhance your Lotus Emira’s rear braking stability, reduce fade, and maintain performance with Girodisc A2-388 rear rotors.

GiroDisc Racing Brakes & Technologies A1-186 Girodisc 2pc Front Brake Rotors | BMW F8x M2, M3, M4 $1,350.00

Girodisc A1-186 Two-Piece Floating Front Racing Brake Rotors Girodisc Rotors to Replace the Front Rotors on the Following Cars: BMW F80 M3 with blue calipers, Front BMW F82 M4 with blue calipers, Front BMW F87 M2 with blue calipers, Front Upgrade Your BMW F8x To The Best Racing Rotors Available If you have a BMW M2, M3, or M4 with blue calipers and iron rotors, this Girodisc floating iron rotor system is a direct replacement for your BMW ;front rotors. No modifications to your car are necessary. The 380mm diameter rotors will bolt directly to your BMW and work with the original blue calipers perfectly. By upgrading your BMW brakes with lightweight high-performance replacements, your factory bias is maintained as well as your ABS efficiency. Girodisc two-piece floating rotors are lighter than OEM brake rotors. This reduction in rotational mass and unsprung weight allows for quicker acceleration, sharper steering, and faster suspension response. When used with Pagid or PFC performance brake pads and CMS RF-1 brake fluid (available from Competition Motorsport), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of each Girodisc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat. The pins are secured by Grade-12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for disc-only replacement as well, minimizing future replacement costs and delivering outstanding performance. Sold/priced per pair.

GiroDisc Racing Brakes & Technologies A2-186 Girodisc BMW F8X M2, M3, M4 368mm Rear Rotors $1,350.00

Girodisc BMW F8X M2, M3, M4 Rear Rotors Unlock the full braking potential of your BMW with Girodisc’s 368mm two-piece rear rotor upgrade for the F8X M2, M3, and M4. These lightweight, high-performance rotors are a direct bolt-on replacement for factory units, delivering sharper response, reduced fade, and better cooling whether on the street or at the track. Precision Engineering Meets Race-Proven Performance Each Girodisc rotor is meticulously crafted in the USA using a floating two-piece design. The hat section is CNC-machined from 6061-T6 aircraft-grade aluminum, while the rotor rings are cast from Girodisc’s proprietary high-carbon iron alloy. The curved vane internal design works as a centrifugal pump, pulling air through the rotor to maximize cooling efficiency during repeated high-speed stops. Features • Direct replacement for OEM 368mm rear rotors – no modifications needed• Lightweight 6061-T6 billet aluminum hats with anodized finish• Proprietary cast iron rotor rings, cast and machined entirely in the USA• Floating mount system allows controlled expansion for improved durability• Anti-noise spring washers eliminate rattle while maintaining proper float• 48 curved directional vanes for superior cooling and consistent performance• Reduces unsprung and rotational weight for enhanced handling• Sold/priced per pair Vehicle Fitment BMW M2 (F87, non-Competition)BMW M3 (F80, all trims)BMW M4 (F82/F83, all trims)Compatible with vehicles using factory 368mm rear iron rotors and blue calipers. Note: M2 Competition and models with carbon-ceramic brakes require a different rotor size. Girodisc A2-186 Rear Rotor FAQs: Are these rotors compatible with the M2 Competition? No. The M2 Competition uses a larger 380mm rotor setup. These rotors fit the standard M2 with 368mm rears. Do I need new pads with these rotors? It’s recommended to install new pads when upgrading rotors to ensure optimal bedding and performance. Will these affect ABS or traction control? No. Girodisc rotors are manufactured to precise OEM dimensions, ensuring full compatibility with all factory electronic systems. Are Girodisc rotors rebuildable? Yes. Once installed, you can replace just the iron rings when worn—no need to purchase complete new assemblies. Enhance your BMW’s braking confidence and precision with Girodisc 368mm rear rotors. Designed for both daily driving and track use, they deliver performance you can feel every time you hit the brakes.

GiroDisc Racing Brakes & Technologies A2-220 Girodisc 2pc Rear Brake Rotors - BMW F8X M2 / M3 / M4 $1,350.00

Girodisc Rear Brake Rotors – BMW F8X M2 / M3 / M4 The Girodisc A2-220 Rear Rotor Kit is a direct replacement for factory carbon ceramic or iron rotors on the BMW F8X platform, including the M2, M3, and M4. Designed for drivers who demand superior thermal control and serviceability, these 380mm two-piece rotors deliver exceptional braking consistency, reduced weight, and race-proven reliability—without any modifications required. Convert Carbon Ceramic to Iron with OEM Precision For vehicles originally equipped with BMW’s carbon ceramic rotors, this Girodisc kit offers a straightforward conversion to high-performance iron rotors. The system bolts directly to the car using the factory calipers and hardware, maintaining OEM brake bias and ABS calibration. Girodisc’s curved-vane design and floating mount system ensure cooler operation, quieter performance, and reduced maintenance costs compared to carbon ceramics. Features • Direct replacement for 380mm BMW F8X M2 / M3 / M4 rear rotors• Converts carbon ceramic brakes to iron rotors with no modifications• Two-piece floating design: 6061-T6 aluminum hat + proprietary cast-iron ring• Curved-vane geometry for superior heat dissipation• Floating mount system with cadmium-plated drive pins and anti-noise spring washers• Class 12.9 hardware for high torque load capacity• Reusable aluminum hats – replace iron rings when worn• Reduced unsprung and rotational mass for improved handling• Sold/priced per pair Vehicle Fitment • BMW F80 M3 / F82–F83 M4 (including CS with optional carbon ceramic package – gold calipers)• BMW F87 M2 / M2 Competition (red or silver calipers)• BMW F87 M2 CS (optional carbon ceramic package – gold calipers)• Note: Vehicles with blue calipers require a different rotor size, available separately. Girodisc A2-220 Rear Rotors – BMW F8X M2 / M3 / M4 FAQs Do these rotors fit OEM calipers? Yes. The A2-220 rotors bolt directly to factory calipers and hubs with no modifications needed. Can I use these to replace carbon ceramic rotors? Absolutely. This kit is designed to replace OEM carbon ceramics with Girodisc’s high-performance iron rotors. It’s a simple bolt-on conversion that reduces cost and improves heat capacity. Do I need to change brake pads? Yes. When converting from carbon ceramic to iron rotors, use pads specifically designed for iron discs to ensure proper friction and performance. What are the benefits of a two-piece floating design? The floating mount system allows for thermal expansion without warping or cracking, maintaining smooth, consistent braking and extending rotor life. Are replacement rings available? Yes. Girodisc offers replacement cast-iron rings that allow you to reuse your aluminum hats and hardware, reducing long-term cost. Are these rotors noisy? No. Anti-noise spring washers prevent rattling when cold while allowing proper float when hot. Upgrade your braking performance and reduce long-term maintenance costs with the Girodisc A2-220 2-Piece Rear Brake Rotors (380mm)—precision-engineered for BMW’s F8X M2, M3, and M4 platforms.

GiroDisc Racing Brakes & Technologies A2-032 Girodisc Porsche 350mm Rear Rotors $1,350.00

Girodisc Porsche 350mm Rear Rotors Upgrade the braking performance of your Porsche 997 Turbo with Girodisc’s lightweight 350mm rear rotors. Designed for both PCCB and non-PCCB vehicles, these direct-fit rotors reduce unsprung mass, improve cooling efficiency, and provide consistent braking power on road or track. A2-032 Girodisc Porsche 350mm Rear Rotor Vehicle Fitment Porsche 997 Turbo (All Models)Works with PCCB and non-PCCB brake systemsDirect OEM replacement – bolts to factory calipers and hardware Built for Precision and Performance The Girodisc system replaces the OEM rotor with a two-piece floating assembly that combines a CNC-machined 6061-T6 aluminum hat and a proprietary cast-iron friction ring, both produced in the USA. The curved vane internal design functions as a centrifugal pump, drawing air through the rotor to keep temperatures stable under heavy braking. This setup maintains factory brake bias and ABS calibration while delivering quicker cooling and improved pedal feel. A2-032 Girodisc Porsche 350mm Rear Rotor Features • Direct OEM replacement – no modifications required• 6061-T6 billet aluminum hats, anodized for durability• Proprietary cast-iron friction rings cast and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while allowing thermal expansion• Curved internal vane design improves cooling and fade resistance• Reduces unsprung and rotational mass• Maintains OEM brake bias and ABS function• Fully rebuildable – replace only friction rings when worn• Sold/priced per pair Girodisc A2-032 Rear Rotor FAQs: Will these work on both PCCB and steel-rotor cars? Yes. They’re engineered to fit either configuration of the 997 Turbo without modification, using your factory calipers and hardware. How do they compare to the factory PCCB rotors? Girodisc rotors offer improved heat tolerance and lower long-term costs, with performance closer to a motorsport-grade iron system while retaining OEM compatibility. What benefits will I notice on track? Expect better heat management, reduced fade, and more consistent pedal feel—even during repeated high-speed braking sessions. Are they serviceable? Absolutely. When the friction rings wear out, they can be replaced separately, making these rotors a long-term performance investment. Enhance your Porsche 997 Turbo’s braking confidence with Girodisc 350mm rear rotors—engineered for precision, performance, and endurance.

GiroDisc Racing Brakes & Technologies A1-203 Girodisc 350mm 2pc Front Brake Rotors for Porsche $1,350.00

Porsche 718 S, 991, 992 911 Carrera Front Rotors Bring race-proven braking performance to your Porsche with Girodisc’s 2-piece floating front rotors. Designed as a direct replacement for the factory rotors and supplied with precision-fit spacers and bolts, this system delivers improved cooling, lighter weight, and more consistent pedal feel under extreme braking. Perfect for the 718 S, 991.2 Carrera, and 992.1 Carrera, these rotors maintain OEM brake balance while drastically enhancing heat control and durability. Performance You Can Feel Every Lap Each Girodisc assembly is precision-machined and hand-finished in the USA from premium materials. The aluminum hat is crafted from 6061-T6 aircraft-grade alloy and anodized for corrosion protection. The iron rings are cast from Girodisc’s proprietary high-carbon alloy, designed for strength and stability under repeated thermal load. The 350mm rotor uses a curved vane design that acts as a centrifugal air pump, pulling cooling air through the rotor to prevent fade and extend pad life. Supplied hardware and spacers ensure exact alignment and fitment to your Porsche’s factory calipers and hub assembly. A1-203 Girodisc 350mm 2pc Front Brake Rotor Vehicle Fitment Porsche 718 Cayman / Boxster S (2017+) Porsche 911 Carrera (991.2 & 992.1 base and S models) A1-203 Girodisc 350mm 2pc Front Brake Rotor Features Direct OEM Replacement: Bolts directly to factory hubs and calipers; includes necessary spacers and bolts for easy installation. Lightweight 2-Piece Design: Reduces unsprung and rotational mass for better handling and braking response. Curved Vane Cooling: Internal vanes pull air through the rotor for optimal cooling and fade resistance. Floating Mount System: Ten high-strength steel pins with anti-noise spring washers allow smooth heat expansion without vibration. Replaceable Rotor Rings: Reuse the aluminum hats—replace only the cast iron rings when worn. Made in the USA: Designed, cast, machined, and assembled under strict quality control at Girodisc’s facility in Washington. A1-203 Girodisc 350mm 2pc Front Brake Rotor FAQs Do these rotors include all hardware? Yes, each kit comes with spacers and bolts needed for proper installation on OEM hubs and calipers. How do they compare to stock rotors? Girodisc rotors weigh less, cool faster, and handle repeated high-heat cycles better than OEM cast discs. Are they compatible with factory brake pads? Yes, these rotors are designed to work perfectly with OEM or aftermarket pads. Can they handle track use? Absolutely—Girodisc rotors are engineered for consistent performance during aggressive street driving and heavy circuit use. Experience smoother, stronger, and more reliable braking with Girodisc’s front rotor upgrade for your Porsche 718 S, 991.2, or 992.1 Carrera. Lightweight, track-tested, and built to last—this is the rotor setup your Porsche deserves.

GiroDisc Racing Brakes & Technologies A1-032 Girodisc 2pc Front Brake Rotors (OEM PCCB) $1,350.00

A1-032 Girodisc 2pc Front Brake Rotors (OEM Porsche PCCB) FITS THE FOLLOWING CARS: Porsche 981 Boxster/Cayman (w/ OEM PCCB) Porsche 991 Carrera (w/ OEM PCCB) Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most products the same or next business day to ensure we meet your delivery deadline. This Girodisc system upgrades your Porsche 981 or 991 equipped with factory PCCB brakes to a 350mm two-piece steel disc and aluminum hat. This two-piece floating rotor design will bolt directly to your Porsche front and work flawlessly with the OEM calipers. Upgrading your brakes to lightweight, high-performance Girodisc rotors, you maintain the factory brake bias and ABS effectiveness. Girodisc rotors maintain the low rotational and unsprung mass of your PCCB rotors while being far more durable -- particularly when swapping wheels on and off at the race track. Combined with Pagid or PFC performance brake pads and Competition Motorsport RF-1 racing brake fluid, Girodisc rotors are the ultimate solution to overheated, cracked, warped rotors that result from high-performance driving. The central hat of the rotor is made from 6061-T6 aircraft aluminum. The disc is manufactured in the USA from the same cast iron used by professional racing organizations. Its curved-vane design, developed in racing, acts like a centrifugal pump forcing cool air through the disc. The disc and hat mount together through a floating mount system using ten cadmium plated, high-strength alloy steel drive pins manufactured by Girodisc. These drive pins transfer braking load while maintaining axial and radial float between the disc and hat to allow for heat expansion. Anti-noise spring washers eliminate the noise typically associated with floating rotors. This two-piece Girodisc design allows for disc-only replacement, reusing the hat to minimize maintenance costs. Sold/priced per pair.

GiroDisc Racing Brakes & Technologies A2-126 Girodisc Porsche 997 GT3 Cup Rear Rotors $1,350.00

Girodisc Porsche 997 GT3 Cup Rear Rotors Developed for Porsche’s factory-built track machines, the Girodisc rear rotors for the 997 GT3 Cup deliver the strength, heat capacity, and rebuildability needed for serious motorsport use. These two-piece floating rotors are designed to handle extreme braking forces while maintaining OEM balance, pedal feel, and ABS function. Vehicle Fitment Porsche 911 GT3 Cup (997.1 & 997.2)Porsche 911 GT3 (997.2)Porsche 911 GT2 (997.2)Compatible with OEM Brembo calipers and both iron and PCCB factory setups. Engineered for Race-Level Braking Performance The Girodisc system bolts directly to the factory hubs with no modifications required. Each rotor features a U.S.-sourced 6061-T6 aluminum hat mated to Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for thermal expansion without warping, maintaining consistent pad contact through repeated heat cycles. Internal curved vanes act as centrifugal pumps, forcing air through the disc to improve cooling during long sessions. This combination of precision machining and race-tested materials ensures maximum reliability and control on and off the track. Features • Direct OEM replacement for Porsche 997 GT3 Cup rear rotors• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron rings cast and machined in the USA• Floating mount system with 10 cadmium-plated steel drive pins• Anti-noise spring washers prevent rattle while maintaining float• Curved vane design for optimal airflow and heat dissipation• Retains OEM pad compatibility—no modification required• Fully rebuildable—replace only the iron rings when worn• Sold/priced per pair Girodisc A2-126 Rear Rotor FAQs: Are these compatible with both PCCB and iron brake systems? Yes. Girodisc rotors are designed to bolt directly onto 997.2 GT3 and GT2 models with either PCCB or iron setups using the same OEM calipers and pads. Do I need to change pads when switching to these rotors? No. Unlike many aftermarket kits, these rotors are designed to use factory unmodified pads and hardware. What advantages do Girodisc rotors offer over stock rotors? They provide better cooling efficiency, lower unsprung mass, and rebuildability—ideal for track use where consistency and serviceability matter most. Can these rotors handle full race conditions? Absolutely. Girodisc rotors are engineered for professional-level track environments and are proven to withstand prolonged high-temperature cycles. Equip your Porsche 997 GT3 Cup with Girodisc rear rotors for uncompromising precision, control, and endurance—built to match the car’s motorsport pedigree.

GiroDisc Racing Brakes & Technologies A2-050 Girodisc Audi R8 / Lamborghini Rear Rotors $1,350.00

Girodisc Audi R8, Lamborghini Rear Rotors Unlock world-class braking performance with Girodisc’s lightweight two-piece rear rotors for the Audi R8 and Lamborghini platform. Designed as a direct OEM replacement, these precision-engineered rotors enhance cooling efficiency, reduce unsprung mass, and maintain perfect brake balance under demanding conditions on the street or track. Vehicle Fitment Audi R8 (All V8 & V10 Models, including Plus)Lamborghini Gallardo (All Models)Lamborghini Huracán (Iron Rotor Applications)Direct OEM replacement—works with factory calipers and hardware. Lightweight, Precision-Machined Performance The Girodisc system is a direct replacement for factory discs and bolts on with no modifications required. Each assembly pairs a CNC-machined 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction rings. The floating two-piece construction manages heat expansion evenly, improving rotor life and eliminating warping. Internal curved vanes act as centrifugal pumps to move air through the rotor for consistent cooling during extended performance driving. Features • Direct OEM replacement – bolts to factory hubs• 6061-T6 billet aluminum hats, machined and hard-anodized in the USA• Proprietary cast-iron friction rings with racing-grade metallurgy• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers maintain float and prevent rattling• Curved internal vanes for superior heat evacuation• Significant unsprung weight reduction over OEM rotors• Maintains factory brake bias and ABS calibration• Fully rebuildable – replace only rotor rings when worn• Sold/priced per pair Girodisc A2-050 Rear Rotor FAQs: Will these fit both Audi R8 and Lamborghini models? Yes. These rotors are engineered for the shared Audi/Lamborghini chassis, ensuring a perfect OEM bolt-on fit with factory calipers. Do these reduce weight compared to stock rotors? Absolutely. Girodisc’s two-piece design cuts significant unsprung and rotational weight for quicker response and improved handling. Can I use these for track days? Yes. The high-carbon cast-iron material and curved vane design provide exceptional thermal stability under heavy braking conditions. Do they work with OEM brake pads? 100%. You can use factory pads or upgrade to a performance compound for aggressive driving or racing use. Enhance your Audi R8 or Lamborghini braking system with Girodisc rear rotors—engineered to deliver lightweight durability and consistent stopping power worthy of supercar performance.

GiroDisc Racing Brakes & Technologies A2-072 Girodisc Mercedes S55, CL55 Rear Rotors $1,350.00

Girodisc Mercedes S55, CL55 Rear Rotors Upgrade your Mercedes S55 or CL55 AMG with Girodisc’s precision-engineered rear rotors—crafted for lighter weight, improved cooling, and exceptional braking performance. Designed as a direct OEM replacement, these two-piece floating rotors deliver sharper pedal feel, reduced fade, and long-lasting durability without altering factory balance or ABS function. Vehicle Fitment Mercedes-Benz S55 AMG (W220)Mercedes-Benz CL55 AMG (C215)Compatible with OEM Brembo calipers and factory hardware. Lightweight, High-Performance Design The Girodisc system installs directly on your factory hubs with no modifications required. Each rotor combines a CNC-machined 6061-T6 aluminum hat with Girodisc’s proprietary cast-iron friction ring, both manufactured and machined in the USA. The floating mount system allows for independent thermal expansion, reducing distortion and maintaining even pad contact under extreme braking. Internal curved vanes act as centrifugal pumps, drawing air through the disc for optimal heat dissipation and consistent performance lap after lap. Features • Direct OEM replacement – bolts to factory hubs• 6061-T6 billet aluminum hats with hard-anodized finish• Proprietary high-carbon cast-iron friction rings cast and machined in the USA• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and maintain float• Curved vane design for efficient cooling and temperature control• Approx. 14.4 lbs vs. 22.5 lbs OEM – saves over 8 lbs per rotor• Fully rebuildable – replace only the iron rings when worn• Sold/priced per pair Girodisc A2-072 Rear Rotor FAQs: Do these fit both S55 and CL55 AMG models? Yes. They are designed for direct OEM replacement on both models equipped with factory AMG braking systems. What’s the performance advantage over OEM rotors? Girodisc rotors reduce unsprung and rotational mass by over 8 lbs per corner, improving braking consistency, suspension response, and acceleration. Are these compatible with OEM pads? Absolutely. They can be used with factory pads or upgraded performance compounds for street or track driving. Do they require any modification or adapters? No. These rotors bolt directly to your existing hubs and use all OEM hardware and calipers without alteration. Enhance your AMG’s braking confidence and control with Girodisc rear rotors—engineered to deliver lighter, stronger, and more responsive performance on every drive.

GiroDisc Racing Brakes & Technologies A2-025 Girodisc Mercedes CLK63 Black Series Rear Rotors $1,350.00

Girodisc Mercedes CLK63 Black Series Rear Rotors Upgrade your AMG with Girodisc’s precision-engineered two-piece rear rotors for the Mercedes-Benz CLK63 Black Series. Built as a direct OEM replacement, these lightweight rotors improve cooling, reduce unsprung weight, and deliver consistent, fade-free braking performance for both road and track driving. Vehicle Fitment Mercedes-Benz CLK63 AMG Black Series (C209)Direct OEM replacement – no modifications requiredCompatible with factory calipers and hardware Designed for AMG Precision and Control The Girodisc system replaces the factory one-piece rotors with a two-piece floating design that enhances heat management and braking consistency. The rotor hats are CNC machined from 6061-T6 aircraft-grade aluminum and paired with Girodisc’s proprietary cast-iron friction rings—both made in the USA. This design maintains OEM brake bias and ABS calibration while delivering smoother, more responsive pedal feel and extended rotor life. Features • Direct bolt-on replacement for OEM rear rotors• 6061-T6 billet aluminum hats, machined and anodized in the USA• Proprietary cast-iron friction rings, poured and machined in-house• Floating mount system with cadmium-plated steel drive pins• Anti-noise spring washers eliminate rattle and manage heat expansion• Significantly reduces unsprung and rotational mass• Retains factory brake bias and ABS functionality• Fully rebuildable – replace only the friction rings when needed• Sold/priced per pair Girodisc A2-025 Rear Rotor FAQs: Do these rotors fit directly on the CLK63 Black Series? Yes. They’re designed as a direct bolt-on replacement and work seamlessly with the factory calipers and parking brake assembly. How do they differ from the dimpled and slotted version? This smooth-surface version focuses on maximum pad contact and quieter operation while maintaining the same two-piece floating design and weight reduction benefits. Are these rotors suitable for aggressive driving or track days? Absolutely. Girodisc rotors are engineered for high thermal capacity and stability, making them ideal for both spirited road driving and performance use. Will these reduce brake fade? Yes. The two-piece floating construction and ventilated vane design promote superior cooling and consistent braking under repeated heavy use. Take your CLK63 Black Series braking to the next level with Girodisc rear rotors—crafted for balance, durability, and uncompromising AMG performance.