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

GiroDisc Racing Brakes & Technologies Girodisc A2-032B 350mm 2pc Porsche Rear Rotors $1,350.00

Girodisc 350mm Porsche 996 / 991 / 992 Rear Rotors (with Spacers & Bolts) The Girodisc A2-032B Rear Rotor Kit is a premium direct-fit replacement for Porsche 996, 991, and 992 models. Engineered for high-performance driving, this system includes caliper spacers and longer bolts to accommodate the larger 350mm rotors. The result is improved braking torque, enhanced cooling efficiency, and reduced unsprung mass—all while retaining factory fitment and ABS calibration. Lightweight Design & Increased Performance Each Girodisc rotor assembly pairs a CNC-machined 6061-T6 aluminum hat with a proprietary cast iron disc. The 2-piece design significantly reduces rotational mass compared to OEM rotors, improving suspension response and acceleration. The curved vane design acts as a centrifugal pump, drawing air through the rotor to enhance cooling and resist fade under extreme braking conditions. Precision Floating Mount System The rotors feature Girodisc’s race-proven floating mount design with 10 cadmium-plated steel drive pins connecting the iron ring to the aluminum hat. These pins allow the disc to expand radially under high temperatures without warping, ensuring consistent pad contact. Anti-noise spring washers eliminate rattle, maintaining quiet operation suitable for street and track use alike. Girodisc A2-032B 350mm 2pc Porsche Rear Rotor Vehicle Fitment Porsche 996 Carrera / Carrera 4 / Carrera 4S Porsche 991 Carrera / Carrera 4 / Carrera GTS (Base models require S/4S/GTS rear pad shape for full rotor sweep) Porsche 992 Carrera / Carrera S / Carrera 4S Direct bolt-on installation with supplied spacers and hardware Technical Specifications CMS Number: A2-032B Position: Rear Rotor Diameter: 350mm (includes caliper spacers & longer bolts) Design: 2-piece floating rotor assembly Material: Proprietary cast iron with 6061-T6 aluminum hat Vane Design: Curved directional vanes for improved airflow Hardware: Cadmium-plated steel drive pins, class 12.9 screws, anti-noise washers Rebuildable: Yes — replace rotor rings, reuse aluminum hats Sold/Price: Per pair Girodisc A2-032B 350mm 2pc Porsche Rear Rotor FAQs Do these rotors fit all Porsche 996, 991, and 992 models? Yes. However, 991 base Carrera models must use the S/4S/GTS rear pad shape for full pad sweep. What is included with this kit? Each kit includes two 350mm rotors, caliper spacers, and longer mounting bolts for a complete direct installation. Are modifications required? No. The supplied hardware makes this a true bolt-on upgrade using factory calipers and lines. What are the main benefits over stock rotors? Improved cooling, reduced weight, better pedal response, and replaceable rings for long-term cost savings. Upgrade your Porsche’s braking system with the Girodisc A2-032B Rear Rotor Kit. Experience reduced fade, sharper braking response, and long-term durability whether on the street or at the track.

GiroDisc Racing Brakes & Technologies A1-186 Girodisc BMW F8X M2 / M3 / M4 380mm Front Rotors $1,350.00

BMW F8X M2, M3, M4 380mm Front Rotors For F8X cars with blue calipers and iron rotors, these Girodisc 380mm floating rotors are a direct replacement that requires no modifications. They deliver stronger heat management and a more consistent pedal, whether on daily commutes or hot laps. Precision-Engineered Performance Vehicle Fitment BMW M2 (F87, blue calipers, iron rotors) BMW M3 (F80, blue calipers, iron rotors) BMW M4 (F82/F83, blue calipers, iron rotors) Features Direct OEM replacement: Designed for factory blue-caliper iron-rotor applications. Curved vane ventilation: Internal directional vanes move air efficiently to fight fade. Floating ten-pin hardware: Alloy pins with anti-noise springs manage thermal growth quietly. Lighter two-piece design: Reduces unsprung/rotational mass for sharper response. U.S. built: 6061-T6 hats and in-house cast iron rings. FAQs Compatible with M2 Competition or CCB cars? Use the dedicated Girodisc applications for M2 Comp or carbon-ceramic brakes. Can I use OEM pads? Yes—works with factory pad shapes; choose compounds to match street/track needs. Any coding or spacers needed? No—this is a true bolt-on fit for the blue-caliper iron-rotor setup. Pair or single? Sold and priced per pair. Unlock cooler operation and steadier braking with Girodisc’s 380mm floating rotors for F8X BMWs equipped with blue calipers and iron rotors.

GiroDisc Racing Brakes & Technologies A1-196 Girodisc Audi C6 RS6 Front Rotors $1,350.00

Audi C6 RS6 Front Rotors Enhance your Audi RS6’s stopping power with Girodisc’s high-performance 2-piece front rotors. Designed as a direct replacement for the OE discs, these rotors reduce unsprung weight and improve thermal performance while preserving your factory brake balance and ABS tuning. Ideal for aggressive street driving and high-speed track sessions, they provide consistent, fade-free braking when it matters most. Built for Speed and Stability Each Girodisc rotor is precision-engineered in the USA from the highest-grade materials. The 6061-T6 aluminum hat is anodized for corrosion resistance, while the proprietary iron rings feature curved internal vanes that act as centrifugal pumps, forcing cooling air through the disc. The floating mount system allows the ring to expand evenly under heat, eliminating warping and ensuring smooth operation. Vehicle Fitment Audi RS6 (C6, 2008–2011) Features Direct OEM Fit: Installs using factory calipers and hubs—no modifications needed. Lightweight 2-Piece Design: Reduces mass for sharper suspension response and better handling. Curved Vane Venting: Improves airflow for greater cooling and fade resistance under repeated braking. Floating Mount Hardware: Twelve high-strength drive pins with anti-noise washers allow smooth, silent float. Replaceable Rotor Rings: Reuse the aluminum hats—replace only the iron rings when worn. Made in the USA: Fully cast, machined, and assembled domestically by Girodisc. FAQs – Audi C6 RS6 Front Rotors Will these fit factory calipers? Yes, they’re a direct bolt-on replacement for OEM rotors using the stock calipers. Do they handle track conditions? Absolutely—they’re engineered for sustained high temperatures and heavy braking cycles. How much lighter are they than stock? The two-piece design saves several pounds per corner, reducing unsprung weight and improving handling. Are they noisy? No, Girodisc’s anti-noise spring washers ensure quiet operation under all conditions. Upgrade your RS6’s braking system with Girodisc’s precision floating rotors—engineered for cooler temperatures, lighter weight, and consistent performance lap after lap.

GiroDisc Racing Brakes & Technologies A1-019A Girodisc Porsche 996.1 GT3 Front Rotors, incl. spacers & bolts $1,350.00

Porsche 996.1 GT3 Front Rotors, incl. spacers & bolts The Girodisc system is a direct replacement for the OE disc on all 996 GT2 and GT3 models. No modifications are necessary—the rotors bolt directly to the car and work seamlessly with the factory calipers. By upgrading your brakes with lightweight, high-performance Girodisc rotors instead of a big brake kit, you maintain factory brake bias and ABS functionality while improving cooling, pedal feel, and overall braking performance. Engineered for Track and Street Performance Weighing approximately 21.0 lbs versus 25.6 lbs for the OEM units, these Girodisc rotors significantly reduce both unsprung and rotational mass. That means quicker suspension response, improved acceleration, and sharper handling—all without sacrificing durability or stopping power. Designed and machined entirely in the USA, each rotor set delivers precision fitment and superior balance for both daily driving and competitive motorsport use. Vehicle Fitment Porsche 996.1 GT3 (1999–2001) Porsche 996 GT2 (2002–2005) Features Direct OEM Replacement: Installs using factory hardware—no modifications required. Lightweight Construction: Approximately 4.6 lbs lighter per rotor compared to OEM, improving suspension response and reducing rotational mass. Curved Vane Design: Acts as a centrifugal pump to draw cooling air through the disc for improved heat dissipation. Floating Mount System: Ten high-strength alloy steel drive pins maintain axial and radial float, secured with class 12.9 cap screws and anti-noise spring washers for silent operation. Made in the USA: Precision-machined and assembled at Girodisc’s facility from fully domestic materials. FAQs – Porsche 996.1 GT3 Front Rotors Do these rotors require special calipers? No, they’re designed to fit perfectly with your factory Porsche calipers and hardware. Are spacers and bolts included? Yes, all required spacers and hardware are included with each set. Can these rotors be used on track? Absolutely. Girodisc rotors are designed for both track and street use, offering excellent heat management and reduced fade. Are the rotors sold individually or as a pair? They’re sold and priced per pair. Step up your braking performance with Girodisc lightweight, race-proven rotors for your Porsche 996.1 GT3. Designed for serious drivers who demand the perfect balance of street comfort and track durability.

GiroDisc Racing Brakes & Technologies A1-032A Girodisc Porsche 996, 997 Front Rotors (Includes Spacers & Bolts) $1,350.00

A1-032A Girodisc Porsche 996, 997 Front Rotors (Includes Spacers & Bolts) Girodisc 2‑piece front rotors for Porsche 996 and 997, supplied with caliper spacers and hardware. Floating construction reduces unsprung mass and maintains OEM brake balance. Vehicle Fitment Porsche 996 – Front Porsche 997 – Front Design & Cooling Proprietary high‑carbon iron rings with curved vanes for airflow and heat control. Reusable anodized aluminum hats and spring‑preloaded floating hardware provide quiet operation and consistent clamp load. Features Includes spacers & bolts 2‑piece floating construction Reusable hats; ring‑only service Sold/priced per pair

GiroDisc Racing Brakes & Technologies A2-282 Girodisc BMW G8X M2, M3, M4 370mm Rear Rotors $1,350.00

Girodisc BMW G8X M2, M3, M4 Rear Rotors Girodisc A2-282 2-piece rear rotors are a direct bolt-on for G87 M2, G80/G81 M3, and G82/G83 M4 without carbon ceramic brakes. Floating construction reduces unsprung/rotational mass and improves heat management while preserving OE parking brake and ABS. Vehicle Fitment BMW G87 M2 (non-CCB) – Rear BMW G80/G81 M3 (non-CCB) – Rear BMW G82/G83 M4 (non-CCB) – Rear Curved-Vane Cooling, Street-Friendly Float High-carbon rings with 48 curved vanes act as a centrifugal pump to pull air through the disc. Reusable 6061-T6 hats and spring-preloaded hardware control thermal growth and minimize rattle. Features Direct OE replacement for 370 mm rear rotors (non-CCB) 2-piece floating design reduces unsprung weight High-carbon iron rings; reusable aluminum hats 48 curved vanes for effective cooling Cadmium-plated high-strength drive pins; Belleville washers Manufactured and assembled in Bellingham, WA Sold/priced per pair Girodisc A2-282 FAQs Minimum service thickness? Replace rear rings at 22 mm or sooner if a crack reaches the edge. Parking brake compatibility? Fully compatible; hat offset maintains OE parking brake operation. Which rings match later? D2-282 rear replacement rings. Any coding or extra parts? No — this is a bolt-on rotor upgrade with OE calipers. Related Products D2-282 Girodisc BMW G8X 370mm Rear Replacement Rings A1-282 Girodisc BMW G8X M2, M3, M4 380mm Front Rotors D1-282 Girodisc BMW G8X 380mm Front Replacement Rings

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.