Brake Rotors

D2-123DS Girodisc Mercedes 360mm Rear Replacement Rings (Dimpled & Slotted) These Girodisc D2-123DS rear replacement rings are sold in pairs and include replacement hardware. They are engineered to work exclusively with existing Girodisc aluminum hats and are not compatible with OEM or other aftermarket hats. Vehicle Fitment Mercedes models matched with 360 mm rear rotor systems For Girodisc rear kits using 360 mm rotors Cost-Effective Service, Track-Ready Materials High-carbon iron rings with dimpled & slotted surfaces improve pad bite and gas evacuation while maintaining stability under heat. Reusing your Girodisc hats keeps long-term service costs down. Features Replacement rings only; reuse Girodisc aluminum hats Sold in pairs with replacement hardware Dimpled & slotted surface for consistent bite High-carbon iron with 48 curved vanes for cooling Direct fit for compatible Girodisc 360 mm rear kits D2-123DS Girodisc Mercedes 360mm Rear Replacement Rings FAQs: Do these include hats? No, these are rings only and require existing Girodisc hats. Are they sold individually? No, they are sold as a pair with hardware. Can I use OEM hats? No, these rings are only compatible with Girodisc hats. Are these suitable for track use? Yes, they offer strong bite and cooling for performance driving. Related Products Related Products A1-308DS Girodisc Mercedes 360mm Front Rotors (Dimpled & Slotted) A2-148DS Girodisc Mercedes 360mm Rear Rotors (Dimpled & Slotted) D1-308DS Girodisc Mercedes 360mm Front Replacement Rings (Dimpled & Slotted) D2-123DS Girodisc Mercedes 360mm Rear Replacement Rings (Dimpled & Slotted)

The D2-145 is the replacement rotor ring kit for the Girodisc A2-145 two-piece steel rotor and aluminum hat combination. It includes all necessary hardware to replace both rear rotor rings. We recommend using the Pagid 2487 racing brake pad with this Girodisc system. As an authorized Girodisc dealer with one of the largest inventories in the country, we ship products within one business day to ensure we meet your delivery deadline. CONTAINS TWO REPLACEMENT ROTOR RINGS AND ASSOCIATED HARDWARE.

FITS PORSCHE 991 GT3/GT3RS (2014-2019) REAR Replacement rotor rings for the Girodisc A2-146 two-piece floating rotors for the Porsche 991 GT3/GT3RS (oem steel rotors). Includes all hardware necessary for safely replacing worn rotor rings. Sold/priced per pair.

REPLACEMENT ROTOR DISCS ONLY. INCLUDES NEW MOUNTING HARDWARE. DOES NOT INCLUDE ALUMINUM HAT.  Competition Motorsport 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 replacement rotor system is a direct rotor disc replacement for the Girodisc two-piece hat and rotor and no modifications are necessary.   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 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 to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

D2-154 Girodisc Rear Replacement Rotor Rings One pair of Girodisc replacement 390mm rotor rings for the Girodisc A2-154 Fitment for Porsche 991 and 992 GT3/GT3RS plus 718 GT4RS two-piece floating rotor systems. Includes all necessary replacement hardware that must be used when replacing rotor rings. Sold/priced per pair.

D2-155 Girodisc Rear Replacement Rotor Rings One pair of Girodisc 380mm steel replacement rotor rings for the Girodisc A2-155 two-piece floating rotor system for the Porsche Cayman GT4 with oem steel brakes. Includes all necessary hardware to safely replace both worn rotor rings. INCLUDES TWO REPLACEMENT ROTOR RINGS AND ASSOCIATED HARDWARE.

D2-156 Girodisc Rear Replacement Rotor Rings REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. Competition Motorsport 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 replacement rotor system is a direct rotor disc replacement for the Giro Disc 2-piece hat and rotor and no modifications are necessary.   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 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 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

Girodisc D2-159 Replacement Rotor Rings McLaren 570, 600LT, 650S, & 720S (Rear) REPLACEMENT ROTOR RINGS AND INSTALLATION HARDWARE ONLY. DOES NOT INCLUDE ALUMINUM ROTOR HATS. Competition Motorsport 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 replacement rotor system is a direct rotor disc replacement for the Girodisc 2-piece hat and rotor and no modifications are necessary. 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 their own specifications and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from braking while maintaining 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 2-piece Girodisc design allows for rotor-ring only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

Girodisc Ford GT350/GT350R Rear Rotor Rings Rear Fitment, Ford Shelby GT350/GT350R with Girodisc A2-162 rotors The Girodisc D1-162 is the direct replacement rotor rings for your Girodisc A2-162 brake rotor kit. This complete kit consists of two new discs (rotor rings) and all replacement hardware. You will re-use the Girodisc aluminum hats from your A2-162 kit and bring your braking feel back to new. Girodisc GT350 Rear Rotor Rings Details Manufacturer: Girodisc Manufacturer Part Number: D2-162 Surface: Slotted Material: Steel Intended for Street/Track Use: Yes For Use with Stock Calipers: Yes Rotor Construction: Vented Rotor Style: Slotted surface Rotor Material: Iron Rotor Finish: Black E-coat Quantity: Sold pair (one axle set) Sold/priced per pair of rings only (does not include center hat and does NOT fit OEM hats.) Girodisc Advantages Girodisc brake kits are seen at every track weekend on very exotic and extreme track cars. What made Girodisc owners leave their OEM rotors and upgrade to a 2 piece Girodisc kit? Less Rotating Mass via two-piece design Grade 12 floating hardware to allow the rotor to grow when heated Curved vane design creates a cooler rotor Significant cost reduction compared to OEM Girodisc Floating Rotor Rings Quality hi-carbon cast iron is the foundation of every Girodisc brake rotor. Every rotor ring is made carefully in house at the Girodisc factory in Washington state. The Girodisc rotor utilizes a curved vane design that was originally developed in racing to act as a centrifugal air pump to force cooling air from the center of the rotor ring to the outside. This principle is similar to what is know as a squirrel cage fan design. By having impellers (vanes) between the two rotor faces, the air is moved radially, from the center outward, changing the direction of the airflow and increasing velocity. This design is mechanically strong, reliable, and very effective. Girodisc Rotor Ring Hardware The Girodisc rotor ring and light-weight aluminum hat have a floating mount system, which utilizes 8 or 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for long-lasting corrosion resistance. These drive pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The drive pins are secured by grade 12 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self-center between the pads. Girodisc Rotor Ring Replacement Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Your Girodisc replacement rotor rings come complete with two new rotor rings and all required floating rotor hardware. This is a very simple task that is quite fun. The aluminum rotor hat usually does not ever need replacement unless bent or damaged. If you damaged has reached your Girodisc hat, you likely have more than a few other things to replace also. The hat is rugged and overly strong.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport 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. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings 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 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport 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. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings 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 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport 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. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings 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 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

Girodisc D2-186 Replacement Rotor Rings (Discs) Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc A2-186 two-piece rear rotors, with no modifications necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. (This kit is contains two cast-iron discs and associated hardware. No aluminum center hat.) The replacement rotor rings 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 and are cadmium plated for corrosion resistance. The alloy drive pins transfer the load from braking 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. Rotor ring-only replacement helps to minimize costs and deliver outstanding performance. Sold/priced per pair.

Girodisc McLaren 390mm Rear Replacement Rings These Girodisc D2-206 rear replacement rings are sold as rings only and include replacement hardware. They are engineered to be used with existing Girodisc aluminum hats and are not compatible with OEM or other aftermarket hats. D2-206  Vehicle Fitment McLaren 600LT  McLaren 720S Serviceable Two-Piece Design Rings are machined from proprietary high-carbon iron for durability and heat resistance. The 48 curved vane design acts as a centrifugal pump to draw air through the hub, improving cooling under sustained braking. Reusing your Girodisc hats helps control long-term running costs. Features Replacement rings only; reuse Girodisc hats Includes replacement hardware High-carbon iron rings for reliable performance 48 curved vanes for effective cooling Direct fit for Girodisc A2-206 rear rotor kits Girodisc McLaren 390mm Rear Replacement Rings FAQs: Do these include hats? No, these are rings only and require Girodisc hats. Are they sold as a pair? Yes, rings are sold in pairs with hardware. Can I use factory hats? No, these rings are only for Girodisc hats. What kit do these pair with? They are the replacement rings for A2-206 rear rotor kits. Related Products A1-206 Girodisc McLaren 390mm Front Rotors A2-206 Girodisc McLaren 390mm Rear Rotors D1-206 Girodisc McLaren 390mm Front Replacement Rings

REPLACEMENT ROTOR RINGS ONLY. INCLUDES NEW INSTALLATION HARDWARE. DOES NOT INCLUDE ALUMINUM HATS. Competition Motorsport 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. These Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc two-piece rotors, and no modifications are necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. The replacement rotor rings 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 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 rotor ring-only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.