Girodisc Rotors

A2-205 Girodisc 2pc Rear Brake Rotors This Girodisc iron rotor conversion is a direct replacement for the OE carbon ceramic disc with no modifications needed. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

A2-211 Girodisc 2pc Rear Brake Rotors (ZL1 Gen 6) is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. Fits Chevrolet Camaro ZL1 Gen 6 These Girodisc iron rotors are a direct replacement for the OE brake discs with no modifications. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

Discovery Parts is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most Girodisc products the same or next business day to ensure we meet your delivery deadline. Fits Nissan GT-R (R35, 2007+) The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. These Girodisc rear rotors are approx 18.8 lbs. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair

A2-238 Girodisc 2pc Rear Brake Rotors (991 GT3 Cup Car Fits Porsche 991 GT3 Cup Car (Rear) The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc.  The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly.  By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.  The Giro Disc rotors are lighter than OEM pieces.  The reduction in rotational and unsprung weight (approx. 8 lbs) allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and RF-1 brake fluid (also available from Discovery Parts), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is manufactured from cast iron which is constructed in the USA and is 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 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our 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 grade12 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 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair. Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

A2-239 Girodisc 2pc Rear Brake Rotors (ZL1 Gen 5) Fits Chevrolet Camaro ZL1 Gen 5 The Girodisc system is a direct replacement for the OE disc, they will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved-vane design, developed in racing to act as a centrifugal pump forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

A2-242 Girodisc 2pc Rear Brake Rotors (C8 Corvette) Fits Corvette C8 The GiroDisc system is a direct replacement for the OEM brake disc. The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and RF-1 brake fluid (also available from Discovery Parts), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is 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 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our 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 grade12 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 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair. Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

A2-266 Girodisc 2pc REAR Brake Rotors GT4 ClubSport This high-performance product is built to meet the demands of competitive racing. Designed for durability, precision, and track-day performance. Engineered for Performance on the Track This Girodisc system is a 380mm two-piece steel rotor and aluminum hat combination, a direct-replacement upgrade for the one-piece OEM GT4 Clubsport steel brakes. The A2-266 will bolt directly to the GT4 ClubSport and work perfectly with your OEM calipers. There are two main reasons for replacing your OEM rotors: first, the Girodisc rotors are designed to shed heat more effectively than the original rotors; second, the slotted Girodisc A2-266 will far outlast the OEM drilled rotors. When subjected to intense heat in a racing or track-day environment, the drilled holes in the OEM rotors originate cracks which can lead to rotor failure. When paired with the Girodisc A1-266 front rotors, your factory brake bias and ABS efficiency are maintained. When used with Pagid or PFC performance brake pads, and RF1 brake fluid (also available from Discovery Parts), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is manufactured from cast iron which is constructed in the USA and is 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 eight to ten high strength alloy steel drive pins manufactured by Girodisc in the USA to our 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 rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/priced per pair. Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

A2-282 Girodisc BMW G8X M2, M3, M4 370mm Rear Rotors Give your BMW G87 M2, G80 M3, or G82 M4 the braking power it deserves with the Girodisc A2-282 2-piece rear rotors. These 370mm rotors are a direct replacement for the OEM rear iron rotors and are designed to improve heat dissipation, reduce unsprung weight, and deliver consistent performance under aggressive driving conditions. Track-Tested 2-Piece Rear Rotors for Your G8X FITMENT: BMW G87 M2, G80 M3, G82 M4 with 370mm rear iron rotors The Girodisc A2-282 rotors feature a lightweight aluminum hat bolted to a high-carbon cast iron rotor ring using a floating mount system. This setup allows for superior thermal expansion, reduced risk of cracking, and quick recovery from high temperatures—ideal for both spirited street driving and track use. The slotted face and 72 curved internal vanes pull cool air through the rotor, improving pad bite and minimizing brake fade. These rotors are fully compatible with factory calipers and pad shapes, so installation is easy—no modifications or special hardware required. When the rings eventually wear down, simply install D2-282 replacement rings and reuse the hats to minimize long-term maintenance costs. Sold and priced per pair. A2-282 Rear Rotor Features: Direct replacement for OEM 370mm rear rotors Fully compatible with factory calipers and brake pads 2-piece floating design reduces unsprung weight High-carbon alloy rotor rings with curved vane cooling Lightweight anodized 6061-T6 aluminum rotor hats Reusable hats pair with D2-282 replacement rings Made in the USA from high-quality domestic materials A2-282 Rear Rotor FAQs: Do I need new calipers or pads? No, the A2-282 rotors are designed to bolt right up using your factory hardware and brake pads. Can I use these on the street? Yes, they’re quiet and smooth enough for daily driving while offering the cooling and durability needed for track use. How do these compare to OEM rotors? They offer improved cooling, reduced weight, and replaceable rings for longer service life. When should I replace the rings? Replace them when they reach the minimum thickness or show signs of cracking. Use D2-282 replacement rings with the original hats. Whether you’re lapping your G8X on the weekend or just want race-grade stopping power on the road, the Girodisc A2-282 rear rotors offer the perfect balance of performance, longevity, and precision engineering.

A2-318 GiroDisc Cadillac CT4-V Blackwing Rear Rotors If you're pushing your CT4-V Blackwing like it was born for the Nürburgring (because it was), you already know your brakes take a beating. Enter the GiroDisc A2-318 Rear Rotors: the no-nonsense upgrade for serious drivers who want fade-free stops, lighter rotating mass, and the kind of confidence that makes late braking feel like a superpower. This is the track-day rear rotor setup your Cadillac deserves. Features: Two-Piece Floating Design: Reduces unsprung weight and improves heat dissipation — meaning better handling, quicker response, and less brake fade lap after lap. Direct Bolt-On Fit: These rotors are designed specifically for the CT4-V Blackwing, requiring no modifications or adapters. Install, bed in, and go drive like you mean it. High-Carbon Alloy Rings: Built from GiroDisc's proprietary high-carbon iron alloy to handle the intense heat generated under extreme braking conditions. Anodized Aluminum Hats: Lightweight yet durable hats machined from 6061-T6 aluminum and anodized to resist corrosion and wear. Slotted for Performance: Helps evacuate gas and debris from the pad surface to maintain consistent contact and bite — especially when you’re diving into high-speed corners. Technical Specifications: Part Number: A2-318 Fitment: 2022+ Cadillac CT4-V Blackwing (Rear Axle) Material: High-carbon alloy rotor rings with 6061-T6 billet aluminum hats Design: Slotted, two-piece floating rotor Weight Savings: Significantly lighter than OEM rear rotors, reducing unsprung and rotational mass FAQs: A2-318 GiroDisc Cadillac CT4-V Blackwing Rear Rotors Are these rotors compatible with the stock Brembo calipers? Yes, they’re a direct bolt-on for your factory calipers. No adapters or spacers needed. Do these rotors work well for daily driving too? Absolutely. While they’re built for performance, they’re totally street-friendly with no compromise on drivability or comfort. How do these compare to OEM Cadillac rotors? GiroDisc rotors offer better cooling, are lighter, and allow for more aggressive braking without fade — perfect for track days or aggressive street driving. Can I replace just the rotor rings later? Yes! That’s one of the best parts of the GiroDisc system — the hats are reusable, so when the rings wear out, just replace the friction ring and hardware. Ready to upgrade the rear brakes on your CT4-V Blackwing to something that can truly keep up? The GiroDisc A2-318 Rear Rotors are engineered to handle real heat, real laps, and real performance driving. Grab a set now and unleash the full braking potential of your Cadillac. 

A2-324 Girodisc 2pc Rear Brake Rotors (C5-C6 Corvette Z51) FITS: CHEVROLET CORVETTE C6 WITH Z51 PACKAGE (2005-2013) is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country. We ship most products same or next business day to ensure we meet your delivery deadline. The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC performance brake pads, and RF-1 brake fluid (also available from Discovery Parts), you have an amazing solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron which is constructed in the USA and is 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 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our 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 grade12 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 2-piece GiroDisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair. Features: • Built for racing reliability and consistent performance • Compatible with demanding track environments • Designed for perfect fit and easy installation FAQs: Is this part track-proven? Yes, it has been tested extensively under racing conditions. Does it require professional installation? While not required, professional installation is recommended for best performance. Will this fit my vehicle? Please refer to the fitment guide or contact us to confirm compatibility. Can I return this if it doesn’t fit? Yes, as long as it’s unused and in original packaging.

D1-012 GiroDisc BMW E46 M3 Front Replacement Rings Get your braking performance back on point with the GiroDisc D1-012 front rotor replacement rings for the BMW E46 M3. Designed to work seamlessly with your existing GiroDisc 2-piece rotor hats, these high-performance rings deliver the same stopping power and heat resistance you expect—without replacing the entire assembly. Direct Replacement Rotor Rings for Track-Ready Performance FITMENT: BMW E46 M3 (with GiroDisc A1-012 front rotor kit) If you’ve already upgraded your E46 M3 with GiroDisc front rotors, these D1-012 rings are all you need to restore full braking capability. They reuse your existing aluminum rotor hats and hardware, making the replacement process quick, cost-effective, and track-ready. Crafted from GiroDisc’s proprietary high-carbon alloy, these rotor rings offer excellent thermal capacity and crack resistance under extreme braking loads. The curved vane design enhances airflow through the disc, improving cooling and reducing fade during repeated hard stops. Each set of rings comes pre-drilled and slotted, ready to install using your current GiroDisc floating hardware system. Whether you're daily driving or heading to the next HPDE event, these rings are built to handle the heat. Sold and priced per pair. D1-012 Replacement Rotor Ring Features: Designed for reuse with GiroDisc A1-012 front rotor hats High-carbon cast iron with proprietary metallurgy Curved vanes for efficient cooling and fade resistance Fully slotted to maintain pad bite and reduce glazing Cost-effective solution for ongoing rotor maintenance Made in the USA from premium domestic materials D1-012 Replacement Rotor Ring FAQs: Will these fit OEM rotors or other brands? No, these are designed specifically to replace worn rings on the GiroDisc A1-012 2-piece rotor system. Do they come with hats or hardware? No, this listing includes only the replacement rings. Reuse your existing GiroDisc hats and hardware. Can I install these myself? If you're comfortable with brake system work, yes. Otherwise, professional installation is recommended to ensure proper float and torque specs. Are these suitable for racing? Absolutely. They’re designed to withstand repeated high-temperature cycles and aggressive braking at the track. When it’s time to refresh your E46 M3’s braking system, the GiroDisc D1-012 replacement rings are the smart, track-proven choice.

D1-282 Girodisc BMW G8X 380mm Front Replacement Rings Restore your Girodisc front rotor setup with the D1-282 replacement rings, designed specifically for the BMW G87 M2, G80 M3, and G82 M4 equipped with the Girodisc A1-282 380mm 2-piece rotors. These rotor rings deliver the same high-performance braking you've come to rely on—without the need to replace the entire assembly. Direct Fit Rotor Rings for Track and Street FITMENT: BMW G87 M2, G80 M3, G82 M4 with Girodisc A1-282 380mm front rotors These high-carbon alloy rotor rings are precision-machined for exact fitment on your existing Girodisc aluminum rotor hats. The curved vane internal design promotes airflow and cooling, making them ideal for high-performance driving and heavy braking conditions. Each ring is slotted for optimal pad bite, gas evacuation, and resistance to glazing. The two-piece Girodisc design keeps long-term costs down—simply replace the worn rings and reuse the hats and floating hardware. Whether you're tracking your G8X or just want to keep braking performance at its peak, the D1-282 rings get the job done with proven strength and reliability. Sold and priced per pair. D1-282 Replacement Rotor Ring Features: Designed for use with Girodisc A1-282 2-piece front rotors High-carbon cast iron construction with curved vane cooling Slotted face for improved pad contact and reduced glazing Compatible with OEM calipers and factory brake pads Reuses your existing Girodisc aluminum rotor hats and hardware Made in the USA from premium domestic materials D1-282 Replacement Ring FAQs: Will these work with OEM or other brands of rotors? No, they are specifically made for Girodisc A1-282 2-piece front rotor systems. Do these include new hardware or hats? No, this kit includes only the rotor rings. Reuse your current Girodisc hats and hardware. Are they good for daily driving? Yes, they provide smooth, quiet performance on the street while maintaining durability for spirited or track use. When should I replace the rings? Replace the rings when they reach minimum thickness or if any cracks extend to the edge of the rotor face. Whether you're prepping for your next track day or just refreshing your setup, the Girodisc D1-282 replacement rings keep your BMW G8X braking hard and running cool.

D1-327 Girodisc Hyundai N 360mm Front Replacement Rings Keep your Hyundai Elantra N or Veloster N braking at its best with the Girodisc D1-327 front replacement rotor rings. Designed for use with the Girodisc A1-327 2-piece front rotor kit, these 360mm high-carbon steel rings restore performance without the cost of replacing your entire rotor assembly. Track-Ready Replacement Rings for Hyundai N Models FITMENT: Hyundai Elantra N, Veloster N with Girodisc A1-327 360mm front rotors When your Girodisc front rotors start to show wear, these D1-327 rings are the perfect refresh. Built from Girodisc’s proprietary high-carbon cast iron, they resist cracking and warping under extreme heat. The 72 curved vane internal design pumps cooling air through the disc, keeping temperatures in check during track sessions or spirited backroad drives. The slotted face improves pad bite and helps clear debris, making sure your brakes remain responsive and fade-free. These rings are precision-drilled and ready to mount to your existing Girodisc 6061-T6 aluminum rotor hats and floating hardware—no modifications needed. Sold and priced per pair. D1-327 Replacement Rotor Ring Features: Direct replacement for Girodisc A1-327 front 2-piece rotors 360mm diameter with high-carbon cast iron construction 72 curved internal vanes for optimized cooling airflow Slotted face for pad consistency and brake response Pairs with original Girodisc hats and floating hardware Manufactured in the USA with premium domestic materials D1-327 Rotor Ring FAQs: Will these fit OEM rotors or other brands? No, they’re made specifically for use with Girodisc A1-327 2-piece rotor systems. Do they include hats or mounting hardware? No, this is for the rotor rings only. Reuse your Girodisc aluminum hats and hardware. Are these good for daily driving? Yes, they offer quiet, smooth street performance and the durability to withstand aggressive driving. When should I replace the rotor rings? Replace them when worn to minimum thickness or when cracks extend to the outer edge. Inspect regularly if tracking your car. If you already run Girodisc front rotors on your Hyundai N and want to keep braking sharp without the cost of full replacement, the D1-327 replacement rings are the ideal solution.

D2-282 Girodisc BMW G8X 370mm Rear Replacement Rings Maintain top-tier braking performance on your BMW G87 M2, G80 M3, or G82 M4 with the Girodisc D2-282 rear replacement rotor rings. These 370mm rings are designed as direct replacements for worn-out rings in the Girodisc A2-282 two-piece rear rotor system—delivering consistent stopping power without needing to buy the entire assembly again. Cost-Effective Rotor Restoration for Track and Street FITMENT: BMW G87 M2, G80 M3, G82 M4 with Girodisc A2-282 370mm rear rotors These high-carbon cast iron rings feature Girodisc’s proprietary metallurgy, developed for extreme thermal performance and resistance to cracking under repeated heat cycles. The 72 curved vane internal design promotes airflow to manage rotor temperatures on the most demanding track days or aggressive street driving. Each ring is slotted to improve brake pad bite and reduce glazing while helping evacuate dust and gases during high-friction braking. They're designed to mount directly to your existing Girodisc aluminum hats and floating hardware, making the swap quick, precise, and cost-effective. Sold and priced per pair. D2-282 Rear Rotor Ring Features: Direct replacement rings for Girodisc A2-282 370mm rear rotors Made from high-carbon alloy cast iron for superior thermal resistance Slotted design maintains pad performance and minimizes glazing Reuses existing Girodisc aluminum rotor hats and float hardware Engineered for track durability and daily drivability Manufactured in the USA using premium domestic materials D2-282 Replacement Ring FAQs: Will these fit OEM or non-Girodisc rotors? No, these are only compatible with Girodisc A2-282 rear rotor hats. Are hats or hardware included? No, this listing includes rotor rings only. Use your existing Girodisc components. Can I drive on these daily? Yes, these rings are street-friendly while offering the cooling and strength needed for track use. When should I replace my Girodisc rings? When they reach minimum thickness or show signs of edge cracks. Track cars may require more frequent inspection. If you’re already running Girodisc rotors on your G8X and it’s time for a refresh, the D2-282 replacement rings offer a high-performance, cost-saving solution to keep your brake system race-ready.