QA1 RCK52392 Rear Pro-Coil MOD Series Coilover Conversion Kit 170 lb/in Springs

The QA1 RCK52392 is a bolt-in rear coilover conversion kit designed for 1965–1970 Chevy B-Body vehicles, featuring QA1's advanced MOD Series adjustable aluminum shocks paired with 170 lb/in high-travel springs. This complete kit transforms the factory rear suspension into a fully adjustable, performance-tuned coilover system with no cutting or welding required.

The standout feature of this kit is the MOD Series shock, which utilizes QA1's QuickTune Technology — dry modular valve packs that can be swapped out quickly while the shock remains on the vehicle. This allows for rapid revalving without opening the shock to debris or air contamination, making it ideal for changing track conditions or performance demands ranging from street driving to hardcore race applications.

Key Features:

• MOD Series adjustable aluminum shocks with QuickTune modular valve pack technology
• 170 lb/in American-made lightweight high-travel springs with fewer coils and smaller wire diameter for increased suspension travel
• Ride height adjustable via fully threaded shock body for dialing in the perfect stance
• 100% dyno tested and serialized shocks
• Rebuildable and revalveable by the QA1 factory or authorized service centers
• Easy bolt-in installation — no cutting or welding required
• Proudly made in the U.S.A. in Lakeville, Minnesota
• Reduces unsprung weight for faster suspension reaction and improved handling

Kit Includes:

• 2 MOD Series aluminum shocks
• 2 high-travel 170 lb/in springs
• All USA-made mounting brackets and necessary hardware

This rear coilover conversion kit lowers the vehicle and pairs seamlessly with QA1's front coilover kits for a complete suspension upgrade. The MOD Series shocks are eligible for a limited lifetime warranty when registered at QA1.net/Warranty.