Wilwood Superlite 4R/ST Rear 12.88in Road Race Kit - Gray Hard Anodize 00-06 BMW M3 (E46)

The Thermlock pistons in these Wilwood Superlite 4R/ST rear calipers are a key detail for serious track use. They're designed to significantly cut down on heat transfer from the brake pads and rotors into the caliper body, fluid, and seals. This means less brake fade and a longer service life for your components, even under the intense demands of road racing.

This kit is built for competition, matching the performance of Wilwood's FSL6R and AERO6 front race kits. It includes 12.88-inch GT series directional vane rotors, which are engineered for efficient cooling. These rotors mount to forged aluminum hats and attach to the drive axles. The calipers themselves use radial mount brackets that bolt directly into the stock locations on your 2000-2006 BMW M3 (E46), simplifying installation. You'll also find high-temperature, high-friction race compound brake pads and all the necessary premium-grade fasteners included to get this system on your car.

This is a comprehensive rear brake upgrade for your E46 M3, specifically put together for road racing applications. It’s a well-built system designed to handle the heat and stress of track days and competition, offering improved stopping performance and durability when you need it most.