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SKU: A1-322
GiroDisc 2020+ BMW M3/M4 (G80/G82/G83 w/Carbon Ceramic Brakes) 2-Piece 400mm Slotted Front Rotors
These GiroDisc 2-piece rotors provide a direct replacement for the 400mm carbon ceramic front rotors on 2021+ BMW G80 M3 sedans, G82 M4 coupes and G83 M4 convertibles. Fully floating assemblies work with factory carbon ceramic calipers and hardware using factory iron pad shape. They deliver consistent braking with effective cooling for track days and street driving.
Key Features
- Proprietary High-Carbon Iron Rings: Cast to GiroDisc specifications for resistance to warping and cracking under heat
- 72 Curved Cooling Vanes: Act as centrifugal pump to draw air through hub for rapid heat dissipation during hard use
- Reusable Aluminum Hats: 6061-T6 construction with black anodize finish attaches to replacement rings (D1-220) to reduce long-term costs
- High-Strength Drive Pins: Cadmium-plated steel alloy with spring clips and Belleville washers for smooth float without rattle or noise
- In-House USA Manufacturing: Hats, rings and pins produced from domestic materials in Bellingham WA for precise quality control
Product Notes
- Sold and priced per pair for complete front axle replacement
- Replace rings at minimum thickness of 34mm or if any crack reaches the edge
- Requires factory iron pad shape with carbon ceramic calipers, contact for pad recommendations
Installation Notes
- Professional installation recommended.
- Bolt-on replacement, no vehicle modifications required beyond rotors and pads
- Uses existing factory calipers, hardware and hub mounting
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2025 | BMW | M3 | Sedan (G80 w/ Carbon Ceramic Brakes) |
| 2021-2025 | BMW | M4 | Coupe (G82 w/ Carbon Ceramic Brakes) |
| 2021-2025 | BMW | M4 | Convertible (G83 w/ Carbon Ceramic Brakes) |
Why Choose GiroDisc?
- Track-proven design trusted by racers and BMW enthusiasts
- Modular 2-piece construction extends service life and cuts replacement expenses
- Every component crafted in USA facility for exact fit and reliability
Frequently Asked Questions
-
Q: Will these rotors fit my G80/G82/G83 with factory carbon ceramic brakes?
A: Yes, direct replacement for 400mm front carbon ceramic rotors using factory calipers and iron pad shape -
Q: What materials are used in construction?
A: High-carbon iron rotor rings, 6061-T6 aluminum hats with black anodize, cadmium-plated steel pins -
Q: Do they make noise on the street?
A: No, assembly with spring clips and Belleville washers ensures quiet operation despite race-level float
Shipping & Handling
- Method: UPS Ground or Freight
- Availability: In stock - ships same or next business day
- Packaging: Secure custom box 42 x 14 x 14 inches
- Weight: 55 lbs per pair
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