The SuperPro rear leaf spring shackle bushing kit for 1984–1989 Toyota 4Runner 2WD addresses an often-overlooked component that stabilizes rear axle movement. Upgrading these bushings reduces rear-end passive steer, wandering and instability under heavy braking or while towing. SuperPro notes that pairing bushings with greaseable shackles improves durability and the rear end’s ability to handle heavier loads and off-road demands for the specified 4Runner applications.
SuperPro 84-89 Toyota 4Runner 2WD Rear Leaf Spring Shackle Bushing Kit