GiroDisc Racing Brakes & Technologies
A1-271 Girodisc Chevrolet Camaro SS 1LE (6th Gen) Front Rotors
$1,778.00
A1-271 Girodisc Chevrolet Camaro SS 1LE (6th Gen) Front Rotors
These Girodisc 2-piece front rotors are a direct replacement for the factory Camaro SS 1LE (6th Gen) brake package and also work on base cars equipped with the Chevrolet Performance brake kit. The floating design reduces unsprung and rotational mass while retaining OEM calipers, ABS, and brake bias.
Vehicle Fitment
Chevrolet Camaro SS 1LE (6th Gen) – Front
Chevrolet Camaro (6th Gen) with Chevrolet Performance front brake kit – Front
Design & Cooling
The central hat is CNC machined from U.S.-sourced 6061-T6 aluminum and anodized for durability. Rings are poured and machined in the USA from proprietary high‑carbon iron and use curved vanes to pull cooling air through the disc during hard use.
Features
Direct OE replacement; no permanent modifications required
2‑piece floating construction reduces unsprung & rotational mass
High‑strength, cadmium‑plated steel drive pins with spring hardware
Reusable aluminum hats; ring‑only service when worn
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A1-272 Girodisc Porsche 992 GT3 Front Rotors (OEM Steel)
$2,773.00
A1-272 Girodisc Porsche 992 GT3 Front Rotors
Direct‑replacement 2‑piece front rotors for the Porsche 992 GT3 with OEM iron brakes. Floating assemblies reduce unsprung mass and preserve factory brake bias and ABS behavior.
Vehicle Fitment
Porsche 992 GT3 – Front (OEM iron brakes)
Design & Cooling
Proprietary high‑carbon iron rings with curved vanes draw cooling air through the disc under load. Reusable anodized 6061‑T6 hats attach with cadmium‑plated floating hardware.
Features
Direct OE replacement; no modifications required
2‑piece floating construction reduces unsprung & rotational mass
Reusable hats; ring‑only service
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A1-273 Girodisc 2pc Front Brake Rotors Tesla Plaid
$2,347.00
A1-273 Girodisc Two-Piece Front Brake Rotors
FITMENT: Tesla Model S Plaid, Front
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 system is an upgrade to a two-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake rotors. These two-piece floating rotors will bolt directly to the car and work with your OEM calipers perfectly. By upgrading your brakes with these lightweight, high-performance replacements (as opposed to a big brake kit), your factory brake bias is maintained, along with 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 class 12.9 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
A1-276 Girodisc 2pc Front Brake Rotors for Porsche 992 GT3/GT3RS (OEM PCCB)
$2,773.00
A1-276 Girodisc Porsche 992 GT3 PCCB Front Iron Rotor Conversion
These Girodisc 2‑piece front rotors convert 992 GT3 cars with PCCB (carbon ceramic) to iron rotors. Use the same pad shape as the 991 GT3 iron setup (smaller annulus than PCCB) for better pad availability and weight control. The rotors bolt to OEM hubs and work with factory calipers and ABS.
Vehicle Fitment
Porsche 992 GT3 with PCCB – Front (iron conversion; use 991 GT3 iron pad shape)
Design & Cooling
USA‑poured high‑carbon iron rings with curved vanes provide excellent heat capacity. The 6061‑T6 aluminum hats are anodized and reuseable; floating hardware uses spring preload to control noise and thermal growth.
Features
Direct bolt‑on conversion; factory calipers retained
Optimized annulus for performance pad selection
2‑piece floating construction to manage heat and mass
Serviceable with ring‑only replacements
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A1-278 Girodisc Ferrari Portofino, Roma Front Iron Rotor Conversion
$2,837.00
A1-278 Girodisc Ferrari Portofino, Roma Front Iron Rotor Conversion
These Girodisc A1-278 2-piece front rotors convert Ferrari Portofino and Roma models from factory carbon‑ceramic to high‑performance iron. Floating construction reduces running costs and retains factory calipers and ABS (use iron‑rated pads).
Vehicle Fitment
Ferrari Portofino – Front (iron conversion)
Ferrari Roma – Front (iron conversion)
High‑Carbon Iron & Floating Hardware
Proprietary high‑carbon iron rings with curved vanes improve cooling and thermal stability. Reusable aluminum hats accept replacement rings for cost‑effective service.
Features
Direct bolt‑on with factory calipers
2‑piece floating design
Use iron‑rated pad compounds
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A1-282 Girodisc BMW G8X M2, M3, M4 380mm Front Rotors
$1,920.00
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
A1-284 Girodisc Acura TLX Type S Front Rotors
$1,778.00
A1-284 Girodisc Acura TLX Type S Front Rotors
These Girodisc A1-284 2-piece front rotors are a direct replacement for the 2021+ Acura TLX Type S. At ~21.85 lb per rotor (vs ~25.8 lb stock), the floating assemblies reduce unsprung and rotating mass while retaining OEM calipers and ABS.
Vehicle Fitment
Acura TLX Type S (2021+) – Front
High-Carbon Rings & 48‑Vane Cooling
Rings are machined from proprietary high‑carbon iron and use 48 curved vanes to pull air through the hub for effective cooling. Reusable aluminum hats accept D1‑284 rings at service time.
Features
Direct OE replacement; no modifications required
2‑piece floating design reduces unsprung & rotational mass
6061‑T6 anodized hats; cadmium‑plated hardware
Manufactured and assembled in Bellingham, WA
Minimum ring thickness: 28 mm
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A1-287 Girodisc Porsche 992 GT3 Cup Front Rotors
$2,489.00
A1-287 Girodisc Porsche 992 GT3 Cup Front Rotors
These Girodisc A1-287 2-piece front rotors are a direct replacement for the Porsche 992 GT3 Cup iron-brake setup. Fully floating construction reduces unsprung and rotational mass while keeping OEM calipers, ABS, and brake bias intact.
Vehicle Fitment
Porsche 992 GT3 Cup – Front (iron brakes)
High-Carbon Rings & Curved-Vane Cooling
Proprietary high‑carbon iron rings with curved internal vanes act as a centrifugal pump to draw cooling air through the disc during heavy use. Reusable aluminum hats accept replacement rings when service is due.
Features
Direct OE replacement; no modifications required
2‑piece floating design reduces unsprung & rotational mass
6061‑T6 aluminum hats; cadmium‑plated hardware
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
GiroDisc Racing Brakes & Technologies
A1-288 Girodisc VW Golf R (Mk8), Audi 8Y S3 Front Rotors
$1,565.00
Girodisc VW Golf R (Mk8), Audi 8Y S3 Front Rotors
Upgrade your Volkswagen Golf R or Audi S3 braking system with Girodisc lightweight two-piece front rotors. Designed for precision, durability, and cooling efficiency, these rotors deliver sharper response and reduced fade for both spirited street driving and demanding track sessions. The fully floating design reduces unsprung and rotating mass, improving handling and braking control without altering factory balance or ABS performance.
Vehicle Fitment
Compatible with:• Volkswagen Golf R (Mk8, 2022+)• Audi S3 (8Y, 2022+)Direct OEM replacement – bolts to factory hubs and calipers, no modifications required.Sold and priced per pair.
Race-Developed, Street-Refined Performance
Each Girodisc 2-piece rotor assembly replaces the factory one-piece iron disc with a lightweight floating design. The friction rings are machined from Girodisc’s proprietary high-carbon iron casting, developed for exceptional strength and thermal stability under high-stress braking. The 72 curved vanes function as internal air pumps, drawing cool air through the disc for maximum heat dissipation and fade resistance. Paired with CNC-machined 6061-T6 aluminum hats finished in black anodize, these rotors strike the perfect balance between weight reduction and durability.
Features
• Direct OEM replacement for VW Golf R (Mk8) and Audi 8Y S3 front rotors• Two-piece floating design reduces unsprung and rotational mass• CNC-machined 6061-T6 aluminum hats, black anodized for corrosion resistance• Proprietary high-carbon cast iron rotor rings for improved heat control• 72 curved cooling vanes efficiently manage thermal load• Fully rebuildable – reuse hats with replacement rings (P/N D1-288)• Precision-assembled using cadmium-plated hardware and spring clip float control• Made and assembled in Bellingham, WA from U.S.-sourced materials• Minimum recommended ring thickness: 32mm
Specifications
• Application: Front axle• Material: High-carbon cast iron with 6061-T6 aluminum hat• Vane count: 72 curved directional• Replacement ring part number: D1-288• Made in the USA• Sold/priced per pair
Girodisc A1-288 Front Rotor FAQs:
Do these rotors fit both the Mk8 Golf R and 8Y Audi S3? Yes. The A1-288 Girodisc rotors are designed for direct fitment on both the Volkswagen Golf R Mk8 and the Audi S3 8Y chassis, using factory calipers and hardware.
How much weight do these rotors save? The two-piece design significantly reduces unsprung weight compared to OEM rotors, improving steering feedback and suspension responsiveness.
Can the iron rings be replaced? Yes. Girodisc rotors are fully rebuildable—simply reuse the aluminum hats and install new rings (part number D1-288) when the originals reach minimum thickness or wear limits.
Are these rotors suitable for track days? Absolutely. Girodisc rotors are engineered for motorsport-level heat management while remaining quiet and reliable for street use, offering the best balance of performance and longevity.
Upgrade your Golf R or S3 with Girodisc two-piece rotors to experience unmatched stopping precision, reduced weight, and consistent performance lap after lap.
GiroDisc Racing Brakes & Technologies
A1-291 Girodisc 2pc Front Brake Rotors for Porsche Cayman GT4RS (oem steel)
$2,773.00
A1-291 Girodisc Porsche 718 GT4 RS Front Rotors (408×36 mm)
Price: $1,950.00
These Girodisc A1-291 2-piece front rotors are a direct replacement for the Porsche 718 GT4 RS with the factory iron brake system. Weighing about ~29 lb per rotor, the fully floating design reduces unsprung/rotational mass while retaining OEM calipers, ABS, and brake bias.
Vehicle Fitment
Porsche 718 Cayman GT4 RS (982) – Front, OEM iron brakes (not PCCB)
High-Carbon Rings & Curved-Vane Cooling
The rotor rings are machined from a proprietary high-carbon iron casting for durability and heat capacity. Curved internal vanes (72-vane) act as a centrifugal pump to pull cooling air through the disc under hard use. The 2-piece construction allows reuse of the aluminum hat with D1-291 replacement rings.
Dimensions
Diameter: 408 mm
Thickness: 36 mm
Weight: ~29 lb per rotor assembly
Features
Direct OEM replacement; no modifications required
2-piece floating design reduces unsprung & rotational mass
Reusable 6061-T6 aluminum hats; cadmium-plated hardware
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-291 FAQs
Does this fit PCCB cars? No — this listing is for cars with OEM iron rotors.
Minimum service thickness? Replace when rings reach 34 mm, or earlier if a crack reaches the outer edge.
Which replacement rings? D1-291 (pair, with hardware) for Girodisc hats.
GiroDisc Racing Brakes & Technologies
A1-302 Girodisc Lamborghini Huracán STO Front Iron Rotor Conversion
$2,837.00
A1-302 Girodisc Lamborghini Huracán STO Front Iron Rotor Conversion
These Girodisc A1-302 2-piece rotors directly replace the factory carbon-ceramic front rotors on the Lamborghini Huracán STO. They reuse the OEM calipers and require the D1130 pad shape (iron-rotor friction compound recommended). Replacement rings later: D1-302.
Vehicle Fitment
2021+ Lamborghini Huracán STO (front, CCB-equipped)
High-Carbon Rings, 72 Curved Vanes
Proprietary high-carbon iron with 72 curved vanes acts as a centrifugal pump to pull cooling air through the disc. Floating hardware with spring preload controls thermal growth and keeps street noise low.
Features
Direct CCB-to-iron conversion; OEM calipers retained
2-piece floating design reduces unsprung/rotational mass
Reusable 6061-T6 aluminum hats; new hardware included
72-vane internal geometry for strong airflow
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-302 FAQs
Which pads do I use? D1130 pad shape in an iron-rotor compound.
Any coding or spacers? No coding or spacers required for STO; designed for OEM calipers.
Minimum thickness? Replace front rings at 32 mm or sooner if a crack reaches the edge.
Related Products
D1-302 Girodisc Lamborghini Huracán STO Front Replacement Rings
A2-302 Girodisc Lamborghini Huracán STO Rear Iron Rotor Conversion
D2-302 Girodisc Lamborghini Huracán STO Rear Replacement Rings
GiroDisc Racing Brakes & Technologies
A1-307 Girodisc 2 Pc Front Brake Rotors (348mm)
$1,636.00
A1-307 Girodisc Toyota GR Supra, BMW 348mm Front Rotors
Price: $1,150.00
These Girodisc A1-307 2-piece front rotors are a direct bolt-on for the Toyota GR Supra 3.0 and BMW G-chassis models equipped with a 348 mm front rotor. Floating construction trims unsprung/rotational mass while preserving OE caliper/ABS function. Replacement rings: D1-307.
Vehicle Fitment
Toyota GR Supra 3.0 (A90/A91) – Front
BMW G20/G21 M340i – Front
BMW G22/G23 M440i – Front
BMW G20/G22 with optional M Sport brakes – Front
BMW G01 X3 M40i & G02 X4 M40i – Front
BMW G29 Z4 M40i – Front
Above applications reflect the 348 mm front rotor package on G-chassis cars.
High-Carbon Rings, 72 Curved Vanes
Proprietary high-carbon iron rings use 72 curved vanes to pull cooling air through the hub for stable temperatures under repeated hard stops. Reusable 6061-T6 hats and cadmium-plated hardware maintain quiet, street-friendly float.
Features
Direct OE replacement; no modifications required
2-piece floating design reduces unsprung/rotational mass
High-carbon iron rings; reusable aluminum hats
72-vane internal geometry for strong airflow
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-307 FAQs
Minimum service thickness? Replace front rings at 34 mm or sooner if a crack reaches the edge.
Do these require new calipers? No — they bolt to OE hubs and run with factory calipers/ABS.
Which rings fit later? D1-307 front replacement rings.
Related Products
D1-307 Girodisc Toyota GR Supra, BMW 348mm Front Replacement Rings
A2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Rotors
D2-307 Girodisc Toyota GR Supra, BMW 345mm Rear Replacement Rings
GiroDisc Racing Brakes & Technologies
A1-308 Girodisc Mercedes 360mm Front Rotors
$1,920.00
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
A1-308DS Girodisc Mercedes 360mm Front Rotors (Dimpled & Slotted)
$2,062.00
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.
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)
GiroDisc Racing Brakes & Technologies
A1-309 Girodisc Audi with Brembo 18Z Front Rotors
$1,415.00
Girodisc Audi with Brembo 18Z Front Rotors
These Girodisc A1-309 two-piece front rotors are purpose-built for Audi models using the Brembo “18Z” 6-piston caliper (Cayenne/Q7/Touareg sourced). They bolt to the car and work with 18Z calipers while reducing unsprung weight and improving cooling versus one-piece rotors.
Vehicle Fitment
Audi S4 (B5) – Front, with Brembo 18Z caliper conversion
Audi A6 (C5) 2.7T – Front, with Brembo 18Z caliper conversion
Audi Allroad (C5) 2.7T – Front, with Brembo 18Z caliper conversion
Fitment note: Minor clearancing on the bottom of the upright is required on C5 chassis per Girodisc instructions. Will not fit C5 A6 4.2 V8, RS6, or Allroad 4.2 V8.
Lightweight, High-Flow Design
High-carbon iron rings with curved internal vanes act as a centrifugal pump to draw cooling air through the disc. Reusable 6061-T6 aluminum hats and cadmium-plated drive pins control thermal growth while keeping street noise in check.
Features
Direct fit for 18Z caliper swaps on B5 S4 / C5 2.7T (A6, Allroad)
Two-piece floating construction reduces unsprung weight
High-carbon rings, curved vanes for efficient cooling
Reusable aluminum hats; new hardware included
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-309 FAQs
Will these fit C5 4.2 V8 or RS6? No. These are for B5 S4 and C5 2.7T cars only when running 18Z calipers.
Is any modification needed? On C5 chassis, Girodisc specifies minor upright clearancing; a guide/video is provided.
Do I need different brake lines or brackets? No additional lines or brackets are required for standard 18Z swap geometry.
What rings do I use later? Use D1-309 front replacement rings.
Related Products
D1-309 Girodisc Audi with Brembo 18Z Front Replacement Rings
GiroDisc Racing Brakes & Technologies
A1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Rotors
$1,636.00
A1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Rotors
The Girodisc A1-310 two-piece front rotors are a direct, bolt-on upgrade for the AMG 45 platform. They retain factory calipers and brake bias while reducing unsprung weight and improving heat management compared to one-piece OE discs.
Vehicle Fitment
Mercedes-AMG A45 (W176) – Front
Mercedes-AMG CLA45 (C117) – Front
Mercedes-AMG GLA45 (X156) – Front
Lightweight, High-Flow Design
The curved-vane iron rings act as a centrifugal pump to pull air through the disc, while the reusable 6061-T6 aluminum hats and floating hardware maintain quiet street manners and race-ready thermal expansion control.
Features
Direct OE replacement; no modifications required
2-piece floating construction with reusable aluminum hats
High-carbon iron rings with curved internal vanes for cooling
Cadmium-plated high-strength drive pins with Belleville springs
Manufactured and assembled in Bellingham, WA
Sold/priced per pair
A1-310 FAQs
Will these work with factory pads? Yes — they’re compatible with OE and performance pad compounds.
Any noise from the floating hardware? Spring washers pre-load the pins to prevent rattles during street use.
Do I need new lines or brackets? No, these mount to stock hubs and calipers with OE hardware.
What rings replace these later? Use D1-310 front replacement rings.
Related Products
A2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Rotors
D1-310 Girodisc Mercedes A45, CLA45, GLA45 Front Replacement Rings
D2-044 Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings
