QA1 R122-200 Rear Coilover Conversion Kit Long Wheelbase Single Adjustable 200 lb/in Springs

The QA1 R122-200 is a complete rear coilover conversion kit engineered for 1973–1979 Ford F-100 long wheelbase trucks. This bolt-on system transforms the factory rear suspension into a fully adjustable coilover setup, delivering improved handling, ride quality, and stance without requiring truck bed removal.

At the heart of the kit are QA1's single-adjustable coilover shocks, paired with 200 lb/in high-travel springs. A single adjustment knob simultaneously controls compression and rebound damping, allowing you to dial in everything from a smooth, comfortable street cruise to a firm, performance-oriented feel with ease.

Also included are adjustable lower trailing arms for precise wheel and tire fitment, and QA1's unique Watts link design that keeps the rear-end housing centered while preventing tires from contacting the truck bed — a critical feature when lowering the rear of these classic trucks.

Key Features:

• Single-adjustable coilover shocks — tune from super-soft to aggressive with one knob
• 200 lb/in high-travel coilover springs included
• Adjustable lower trailing arms for precise wheel and tire alignment
• Watts link design centers the rear-end housing and increases tire clearance
• Powder-coated components for long-lasting rust and corrosion resistance
• Bolt-on installation — no truck bed removal required
• All necessary hardware included
• QA1 shocks are 100% dyno-tested and serialized
• Made in the USA at QA1's Lakeville, Minnesota facility
• Available in 170 lb, 200 lb, and 250 lb spring rate options

QA1 backs their shocks with a Limited Lifetime Warranty when registered at QA1.net/warranty. Whether you're building a restomod street truck or a weekend performer, the R122-200 delivers the adjustability and reliability QA1 is known for.