The Wilwood Narrow Superlite 4R rear kit pairs forged four-piston calipers and BP-10 compound pads with 12.88-inch drilled rotors to upgrade rear braking on 1999–2005 Subaru WRX and 1999–2007 Impreza models. These specialist kits preserve OE parking brake use, master cylinder output, and ABS function while offering complementary style and braking performance when used with 13" and larger front brake upgrades and wheel, tire, or suspension changes.
Wilwood Narrow Superlite 4R Rear Kit 12.88in Drilled 99-05 WRX / 99-07 Impreza