Across motorsport, Brembo and its Group brands have now passed 1,000 world titles since 1975 — Formula 1, MotoGP, WEC, IMSA, and more. This Brembo front brake rotor (part number 09.A731.21) is the rotating disc the pads bite into, the part doing the real work of turning kinetic energy into heat under hard braking.
Brembo casts its rotors from high-carbon iron for better heat dissipation, the same metallurgy approach it uses across OE and motorsport programs. Match this part to your application using the fitment table below — Brembo's range covers exact OE positions, and getting the right one matters as much as the brand.
Technical Details
- Manufacturer part number: 09.A731.21
- Part type: Front Brake Rotor
- Vehicle system: Front brake system
- Listed fitment years: 2003–2006
Fitment & Compatibility
Use the fitment table below to confirm year, model, submodel, and any brake-package notes before ordering. Optional and AMG/sport brake packages can change the correct part.
With over 20 years working on brakes and Porsche applications, PMB Performance can verify this fits your exact vehicle. Reach out with your VIN if anything in the fitment table needs checking.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2003 | Mercedes-Benz | CLK500 | ||
| 2004 | Mercedes-Benz | CLK500 | ||
| 2005 | Mercedes-Benz | CLK500 | ||
| 2006 | Mercedes-Benz | CLK500 |