Wilwood Narrow Superlite 4R Rear Kit 12.88in Drilled Red 99-05 WRX / 99-07 ImprezaForged Narrow Superlite 4R four piston calipers are combined with BP 10 compound pads and 12. 88 rotors in this group of big brake kits for custom high performance street and show machines. This group of specialized kits for Import Cars retain full use of the OE parking brake, master cylinder output, and ABS where used. FNSL4R rear kits provide complimentary style and performance with 13 and larger front brake upgrades in conjunction with wheel, tire,