The Wilwood Narrow Superlite 4R rear kit combines forged four-piston calipers with BP-10 compound pads and 12.88-inch rotors to upgrade rear braking on 1999–2005 Subaru WRX and 1999–2007 Impreza applications. These kits retain OE parking brake operation, master cylinder output, and ABS compatibility while providing complementary style and balance alongside larger front brake upgrades and upgraded wheels, tires, or suspension components.
Wilwood Narrow Superlite 4R Rear Kit 12.88in 99-05 WRX / 99-07 Impreza