Transform your classic C10 with QA1’s revolutionary rear coil spring conversion kit. Engineered from the ground up, this system brings modern performance and adjustability to your 1973-1987 pickup, all without requiring bed removal.
The kit features a unique, bolt-in torque arm design that delivers exceptional performance without the binding issues common in other 4-link setups. Experience superior control over your suspension for a smoother ride and enhanced handling characteristics.
Achieve your perfect stance with the fully adjustable coil-over system, offering 4 to 7 inches of drop below stock height. For a perfectly level ride, pair this rear system with QA1’s front suspension upgrade.
This complete kit includes everything needed for installation, from hardware to high-quality components proudly made and serialized in QA1’s USA facility, including single-adjustable coil-over shocks.





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