The Wilwood FNSL6R front kit for 2003–2008 Audi A4 applications uses the Forged Narrow Superlite 6R six‑piston caliper with 12.88" rotors to raise braking capacity while maintaining OE master cylinder output and ABS compatibility. These application‑specific kits add stopping power and complementary styling for show cars and street/track or drift builds, with optional caliper finishes and rotor designs to suit individual needs.
Wilwood 03-08 Audi A4 Front Kit FNSL6R 12.88