RSS Tarmac Series Suspension Kit - 981/982-718 Cayman / Boxster Stage - 1 Suspension Kit corrects lowered suspension geometry, eliminates rubber bushing deflection, sharpens your feedback, and improves vehicle handling dynamics. ADJUSTABLE FRONT & REAR TOE/BUMP STEER KITS- Correct suspension geometry changes in the front & rear of the lowered vehicle and allow additional toe adjustment at the toe steer arm. Features heavy duty, high tolerance monoball rod ends for precise suspension articulation. The rod ends are height adjustable to help reduce/eliminate bump steer. LOCKING PLATE KIT- Designed for use with our Adjustable Rear Toe/Bump Steer Kit. It replaces the factory eccentric bolt which can come loose under racing and/or aggressive driving conditions. Preserve your alignment settings with this kit.