Transform Your A-Body's Handling with the GP-S Rear Suspension Kit

Fits: Chevelle, GTO, Cutlass, Skylark, and other GM A-body vehicles

Unlock the true potential of your GM A-body’s rear suspension with our GP-S Rear Suspension Kit, engineered for drivers who demand better geometry, improved traction, and street-tuned performance without the compromises of race-only parts. This complete kit includes both upper and lower rear control arms, replacing the weak stamped factory components with precision-engineered upgrades that eliminate flex, enhance articulation, and bring your car to life on the street or during spirited driving.

Street Optimized, Track Capable

Both the upper and lower control arms are part of our GP-S Series, a product line developed specifically for pro touring builds that need real-world drivability with confident handling. Whether you're cruising the backroads, hitting an autocross, or just want a firmer, more responsive ride, this kit delivers the perfect blend of strength, comfort, and control.

Rear Lower Control Arms

Built from 1.5" x .156" DOM steel tubing, our lower control arms significantly reduce deflection compared to factory arms, improving rear axle stability and traction during acceleration and cornering. Each arm is equipped with high-quality Energy Suspension™ polyurethane bushings for less flex while maintaining ride quality, and finished in durable satin black powder coat.

Note: These arms do not include sway bar mount holes and are intended for use with a chassis mounted anti-roll bar. We strongly advise against using a control arm mounted sway bar due to their poor performance.

Rear Upper Control Arms

Constructed from 1.25" x .188" DOM steel tubing, our upper control arms include Energy Suspension™ polyurethane bushings for reduced flex and maintenance-free operation. This results in improved axle control and overall rear suspension response, especially during hard launches or aggressive cornering.

Complete the Package

Pair the GP-S Rear Suspension Kit with these additional components to fully modernize your rear setup:

• Chassis Mounted Anti-Roll Bar – Sharpen cornering, reduce body roll, and eliminate bind

• Coilover Conversion Kit – Fine-tune ride height and damping for a balanced street or track setup

• Tubular Front Control Arms (GP-S Series) – Achieve full-vehicle harmony with matched front-end geometry

All GP-S Series products are proudly engineered, crafted, and precision-welded to order.
Please allow 1–2 weeks for production and shipping.