Pro Rear C/O Shock Sys. w/Single Adj. Shocks

The Pro Rear C/O Shock System with Single Adjustable Shocks by QA1 is engineered for builders and enthusiasts who demand precision handling and predictable suspension tuning on rear-wheel-drive and four-link equipped vehicles. This coil-over system replaces factory rear shocks with adjustable damping control, allowing you to dial in compression and rebound independently for any driving condition—street, strip, or road course. Whether you're fine-tuning a classic muscle car, a modern performance build, or a weekend autocrosser, this shock system delivers the adjustability serious suspension work requires.

QA1's single-adjustable design focuses on compression damping, giving you real-time control over how the shock absorbs impacts and supports load transfer during acceleration and braking. The monotube construction promotes consistent heat dissipation, preventing fade during extended driving or track sessions and maintaining stable performance across varying suspension movement. The system mounts directly to OEM attachment points on compatible four-link and parallel-arm rear suspension setups, making installation straightforward for those with basic suspension knowledge and proper equipment—no exotic modifications required.

This system is ideal for car owners upgrading from worn factory dampers or transitioning from passive suspension to adjustable geometry. Installation is best suited to those familiar with rear suspension work or partnered with a qualified technician; improper setup can affect ride quality and handling balance. Verify your vehicle's suspension type—four-link or parallel-arm configurations—before purchasing, and confirm compatibility with your existing spring rates and mounting hardware to ensure optimal performance and safety.