The Wilwood Narrow Superlite 4R rear brake kit for 2020–2021 Jeep Gladiator narrow applications includes SRP 13.50-inch rotors with included lines and a black finish. This rear kit is specified to fit Gladiator narrow rear geometry and offers a compact multi‑piston upgrade intended to improve braking while accommodating the vehicle's rear clearance and mounting requirements for the stated years.

Wilwood 20-21 Jeep Gladiator Narrow Superlite 4R Rear Brake Kit SRP 13.50in Rotor w/Lines - Black