Vehicle Gear

A1-308DS Girodisc Mercedes 360mm Front Rotors (Dimpled & Slotted) These Girodisc A1-308DS 2-piece dimpled and slotted front rotors are a direct replacement for factory 360 mm front rotors on Mercedes performance models. The floating two-piece design reduces unsprung weight and improves cooling, while the surface pattern enhances pad bite and gas evacuation. Vehicle Fitment Mercedes-AMG / Mercedes models using 360 mm front rotors Factory OEM 360 mm brake systems on select AMG / performance models High-Performance Dimpled & Slotted Design The 48 curved vane internal structure pulls cooling air through the rotor like a centrifugal pump. Combined with high-carbon iron rings and reusable aluminum hats, this design delivers excellent thermal stability and cost-effective service. Features Direct OEM replacement for 360 mm front rotors Dimpled & slotted rotor surface improves bite and pad cleaning 2-piece floating rotor design reduces unsprung weight High-carbon iron rings with reusable aluminum hats 48 curved vanes for outstanding cooling Manufactured and assembled in Bellingham, WA A1-308DS Girodisc Mercedes 360mm Front Rotors FAQs: Are these a direct fit? Yes, they bolt to factory hubs and work with OEM calipers. Do they work with OEM pads? Yes, and they are compatible with performance pad compounds. Can I replace just the rings later? Yes, reuse the hats with D1-308DS replacement rings. Why dimpled & slotted instead of drilled? The pattern improves bite and gas evacuation while minimizing cracking risk versus fully drilled rotors.

Girodisc Corvette C6 ZR1 Rear Iron Rotor  Replace your factory carbon-ceramic rotors with Girodisc’s high-performance iron rotor conversion for the Corvette C6 ZR1. This bolt-on system provides exceptional braking consistency, reduced operating costs, and race-proven heat management—all while maintaining full compatibility with factory calipers and ABS systems. Direct OEM Replacement for Carbon-Ceramic Rotors The Girodisc system is a true plug-and-play upgrade for the C6 ZR1, offering the same dimensions as the OEM carbon-ceramic rotors without requiring any modifications. The two-piece floating design features a CNC-machined 6061-T6 aluminum hat and a proprietary high-carbon cast iron rotor ring. This setup allows the rotor to expand under heat, maintaining consistent contact with brake pads and preventing warping or fade during extreme conditions. Features • Direct replacement for OEM carbon-ceramic rear rotors• Precision-machined 6061-T6 billet aluminum hats• Proprietary high-carbon cast iron rings cast and machined in the USA• Floating mount system with 12 cadmium-plated alloy steel drive pins• Anti-noise spring washers prevent rattling while maintaining float• Curved vane design acts as a centrifugal pump for superior cooling• Fully rebuildable—replace only the rotor rings when worn• Sold/priced in pairs Vehicle Fitment Chevrolet Corvette C6 ZR1 (2009–2013)Compatible with OEM carbon-ceramic brake systems and factory calipers. Girodisc A2-184 Rear Rotor FAQs: Do these Girodisc rotors replace the factory carbon-ceramic setup? Yes, this iron rotor conversion is engineered as a direct replacement for the OEM carbon-ceramic rotors on the C6 ZR1. Are the rotors lighter than the carbon-ceramic ones? No. While slightly heavier, Girodisc rotors provide improved heat capacity, better pedal feel, and lower long-term maintenance costs. Can these rotors handle track use? Absolutely. When combined with quality performance pads and high-temperature brake fluid, Girodisc rotors offer outstanding durability and fade resistance under extreme track conditions. Are they compatible with OEM calipers and sensors? Yes. These rotors fit perfectly with the factory ZR1 calipers and retain all OEM brake system functions. Experience consistent, confidence-inspiring braking on your C6 ZR1 with Girodisc’s rear iron rotor conversion—a proven upgrade for performance enthusiasts and track drivers alike.

Audi B9 RS4 / RS5 Front Rotors Unleash the full braking potential of your Audi RS4 or RS5 with Girodisc’s lightweight 2-piece floating front rotors. These are a true bolt-on replacement for the factory discs—no modifications required. By upgrading to Girodisc, you maintain your OEM brake balance and ABS functionality while gaining improved cooling, reduced fade, and a noticeably sharper pedal feel. Engineered for Precision and Performance Each Girodisc rotor is designed and manufactured in the USA from premium materials. The hat is CNC-machined from 6061-T6 aircraft-grade aluminum for strength and reduced weight. The iron rotor rings are cast from Girodisc’s proprietary high-carbon alloy, developed to withstand extreme temperatures and ensure consistent performance under repeated hard stops. The internal curved vane design acts as a centrifugal air pump, pulling cooling air through the disc to keep brake temperatures under control during spirited or track driving. Girodisc A1-216 Vehicle Fitment Audi RS4 (B9, 2018+) Audi RS5 (B9, Coupe & Sportback, 2018+) Features Direct OEM Fit: Bolts directly to factory calipers and hubs with no adapters or modifications needed. Lightweight Two-Piece Design: Reduces rotational and unsprung mass for faster suspension response and improved cornering. Curved Vane Cooling: Directional vanes actively pump air through the disc to improve cooling efficiency and prevent fade. Floating Mount System: Twelve high-strength steel drive pins with anti-noise spring washers allow thermal expansion without rattle or vibration. Serviceable Construction: The aluminum hats are reusable—only replace the cast-iron rings when worn. Made in the USA: Fully machined and assembled domestically with tight quality control. FAQs –Girodisc A1-216 Audi B9 RS4 / RS5 Front Rotors Are these rotors compatible with OEM calipers? Yes, they fit the factory RS-series Brembo calipers directly—no adjustments required. Will these improve braking feel? Absolutely. You’ll notice a more consistent, responsive pedal with improved modulation under high heat. Are Girodisc rotors quieter than stock? Yes—the floating hardware includes anti-noise spring washers that eliminate the rattling common to other two-piece designs. Can these rotors handle track use? Definitely. They’re designed for sustained high temperatures, making them ideal for both spirited road use and heavy circuit work. Give your Audi RS4 or RS5 the braking confidence it deserves with Girodisc’s precision-built floating front rotors. Engineered to deliver unmatched cooling, control, and reliability—whether you’re charging mountain roads or braking deep into a corner at the track.

Sparco EVO Carbon Fiber Racing Seats Expiry: 2028 The Sparco EVO Carbon Fiber updates the iconic EVO with QRT-inspired ergonomics and a full pre-preg (dry) carbon shell. Slimmed shoulder bolsters improve fit in smaller cars, lower side bolsters ease entry/exit, and raised belt guides improve harness routing—all while keeping the supportive EVO feel. The all-carbon construction makes the EVO Carbon one of the lightest seats available—under 10 lb (shell only), about 12 lb complete. High-grip fabric at the shoulders and seat base helps stabilize the driver. The EVO series features generous back-angle rake for comfort in long stints. FIA 8855-1999 approved. Sizing EVO Carbon — Medium (up to 34" waist) EVO L Carbon — Large (up to 36" waist) EVO XL Carbon — X-Large (up to 38" waist) Key Features Ultralight pre-preg carbon fiber shell Excellent fitment for small cockpits (e.g., Miata) Lower side bolsters for easier ingress/egress Raised harness guides for improved belt fit High-grip fabric in strategic zones FIA 8855-1999 approved Dimensions EVO (Std) Dimensions EVO L / XL Dimensions

Racetech RT4100 Series Racing Seats Introducing the all-new Racetech 4100 Series racing seats! The RT4100 is a standard-sized fiberglass race seat. Racetech focused on achieving a lightweight seat shell with optimized geometry, straddling the line between designing the seat to be wide enough in the shoulders to suit the athletic build, but narrow enough to fit in most cockpits. The Racetech 4100 Series patented back-mounted technology has trickled down from the 119 and 129 Series, giving you the option of fixing the seat to the roll bar or cage at shoulder level. The large harness guides and a removable molded base cushion of the Racetech RT4100 Series racing seats allow a range of drivers of varying heights to fit. Breathable Spacer® fabric, parallel sides and pronounced thigh support round off the features of this accomplished motorsport seat. Racetech RT4100 Racing Seat Options RT4100: Standard size, FIA approved RT4100T: Tall size, FIA approved RT4100WT: Wide & tall size, FIA approved All 4100 Series seats use Racetech RTB1009M alloy side mounting brackets (can be added separately). Racetech RT4100 Racing Seat Details Manufacturer: Racetech FIA homologation: 8855-1999 Seat sizes: Standard, Tall (T), or Wide & Tall (WT) Shell weight: 5.7kg (12.5 lbs) to 6.0kg (13.2 lbs) Shell construction: fiberglass composite Gel-coat: gloss black Seat covering: black fire-retardant nylon fabric with Spacer® mesh through the torso Back-mount compatible: yes

Sparco Legend Kevlar Racing Seat  2029 Expiry Introducing the Sparco Legend Kevlar race seat – a timeless masterpiece inspired by the exhilarating world of 1980s rally racing. With an unmatched blend of heritage and innovation, this seat captures the essence of that golden era, providing rally enthusiasts with an authentic and immersive experience like no other. The Sparco Legend Kevlar race seat pays homage to the rugged spirit of 1980s rally racing, where drivers pushed the limits of their skills and machines across treacherous terrains and unforgiving conditions. Designed with meticulous attention to detail, this seat combines classic aesthetics with modern technology, delivering a fusion of vintage charm and contemporary performance. Sit in the Sparco Legend Kevlar race seat and be transported back in time to an era of iconic rally legends. Crafted from carbon/kevlar and other premium materials, this seat features a retro-inspired design that reflects the era's distinctive style. From the vintage-inspired stitching to the classic embroidered logos, every element has been carefully crafted to evoke nostalgia and celebrate the glory days of rally racing. But the Sparco Legend Kevlar race seat isn't just about looks – it's built to endure the demanding challenges of rally racing. With its reinforced kevlar structure and robust construction, this seat is engineered to withstand the rigors of auto racing. The specially designed padding offers optimal support and comfort, ensuring you stay focused and energized during those long and intense rally stages. In rally racing, safety is paramount, and the Sparco Legend Kevlar race seat excels in this aspect. Built to meet the highest safety standards, this seat provides superior protection in the event of a crash or sudden impact. The integrated headrest and side bolsters offer enhanced support and stability, keeping you securely in place, even during the most demanding maneuvers on unpredictable terrain. As you navigate through gravel, dirt, and mud, the Sparco Legend Kevlar race seat enhances your connection with the car and the road. Its ergonomic design promotes proper posture, allowing you to feel the subtle feedback and nuances of the vehicle's movements. With each twist and turn, the seat's firm yet comfortable grip ensures you maintain optimal control, empowering you to unleash your driving skills to their full potential. Whether you're recreating historic rally moments or embarking on new off-road adventures, the Sparco Legend Kevlar race seat is the perfect companion for your journey. Its universal fitment and compatibility with a wide range of rally cars from the 1980s ensure seamless integration and ease of installation, allowing you to relish the authentic rally experience in your cherished classic or modern rally machine. Embrace the spirit of 1980s rally racing with the Sparco Legend Kevlar race seat – where timeless design meets modern performance. Ignite your passion for rally, feel the adrenaline surge through your veins, and embark on an unforgettable adventure that honors the legacy of those iconic rally warriors. Sparco invites you to relive the glory days of rally racing and create your own legend behind the wheel. Sparco Legend Kevlar Race Seat Sizing Medium / Large (up to 36” waist) Sparco  Kevlar Race Seat Technology Ultra lightweight dry carbon/Kevlar shell Bottom mount only Excellent ergonomics FIA 8855-1999 approved

Girodisc Rear Brake Rotors – Alfa Romeo Quadrifoglio / Maserati The Girodisc A2-224 Rear Rotor Kit is a high-performance, direct replacement for factory rear rotors on Alfa Romeo Quadrifoglio and select Maserati models. Built to withstand extreme heat and aggressive driving, these lightweight two-piece rotors improve cooling efficiency and responsiveness while maintaining OEM brake balance and ABS function. Lightweight Performance Meets Italian Engineering Each rotor is crafted using Girodisc’s precision two-piece floating design—featuring a CNC-machined 6061-T6 aluminum hat paired with a proprietary cast-iron friction ring. The curved vane internal geometry acts as a centrifugal air pump, forcing cool air through the disc to reduce heat, fade, and warping during track or spirited driving. The result: consistent, confidence-inspiring braking performance without compromising everyday drivability. Features • Direct-fit replacement for Alfa Romeo Quadrifoglio and select Maserati rear rotors• Two-piece floating rotor design: cast-iron ring + 6061-T6 aluminum hat• Curved-vane internal structure for superior heat dissipation• Floating mount with cadmium-plated steel drive pins and anti-noise spring washers• Class 12.9 fasteners with hardened washers for maximum strength• Reusable aluminum hats – only replace iron rings when worn• Reduces unsprung weight for better handling and suspension response• Sold/priced per pair Vehicle Fitment • Alfa Romeo Giulia Quadrifoglio – Rear• Alfa Romeo Stelvio Quadrifoglio – Rear• Maserati Ghibli / Levante / Quattroporte (select trims) – Rear• Compatible with OEM calipers and ABS• Direct bolt-on installation with no modifications Girodisc A2-224 Rear Rotors – Alfa Romeo Quadrifoglio / Maserati FAQs Do these rotors fit the stock calipers? Yes. The Girodisc A2-224 rear rotors bolt directly to the OEM calipers without modification, maintaining proper brake bias and system balance. What benefits do two-piece rotors offer? They significantly reduce unsprung weight, improve cooling, and allow the rotor to expand under heat without warping or coning, resulting in consistent braking and longer life. Can I reuse the hats? Yes. When the iron rings wear out, simply replace the rings while reusing the aluminum hats and hardware for a cost-effective rebuild. Are replacement rings available? Absolutely. Girodisc offers replacement iron rings that fit perfectly onto your existing aluminum hats. Do these rotors make noise? No. The anti-noise spring washers eliminate rattles when cold while preserving full float during heat cycles. Are these rotors lighter than OEM? Yes. The aluminum hat reduces rotational mass and unsprung weight, improving responsiveness and handling. Experience superior braking performance with the Girodisc A2-224 2-Piece Rear Brake Rotors—precision-engineered for Alfa Romeo and Maserati enthusiasts who demand the perfect balance of comfort, control, and performance.

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.

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.

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

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 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 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

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