QA1 Suspension System R210-250N

Upgrade the rear suspension of your 1963-1972 Chevrolet C10 with a complete QA1 Rear Suspension System, paired with a narrowed 9-inch housing and 31-spline axles. This system combines double-adjustable coil-over performance with more flexibility for modern wheel and tire fitment. The narrowed housing is designed to complement mini-tubbed C10 trucks while opening up more options for wheel fitment. The result is greater freedom to choose from readily available wheels and create the stance and look you want. MORE WHEEL OPTIONS, BETTER FITMENT The included 9-inch housing features a 57-1/8" wheel mounting surface width, 6-1/2" narrower overall than the factory 63-5/8" width. The narrowed design works with mini-tubs to give you greater flexibility in wheel width, backspacing and offset, making it easier to fit wider wheels and tires under your C10. The housing includes 31-spline axles, Big Ford New Style Torino housing ends with a 2.5" axle offset and dual 5x4.75" and 5x5" bolt patterns for compatibility with a wide range of brake and wheel combinations. MODERN COIL-OVER PERFORMANCE Replace the factory rear suspension with a performance-focused coil-over system designed to improve suspension control and give your C10 a more responsive, modern driving experience. DOUBLE-ADJUSTABLE COIL-OVERS QA1 double-adjustable shocks let you independently tune compression and rebound, giving you greater control over how your truck responds to different road conditions and driving styles. With 18 positions of adjustment for each, you can fine-tune ride quality, handling and traction for street driving or more performance-focused use. The included 250 lb/in. springs provide a firmer spring rate for performance-focused trucks and builds that require additional spring support.  

• Fit wider wheels and tires: Narrowed 9-inch housing provides an additional 3-1/4" per side for mini-tub applications.
• Modernize your C10 suspension: Coil-over suspension provides greater suspension control and a more performance-focused driving experience.
• Fine-tune ride and handling: Double-adjustable coil-overs provide independent compression and rebound adjustment for greater control over suspension behavior.
• Build around your preferred wheels and brakes: Dual 5x4.75" and 5x5" bolt patterns and Big Ford New Style Torino housing ends provide compatibility with a wide range of combinations.
• Start with a complete, matched system: Suspension components, coil-overs, narrowed 9-inch housing and 31-spline axles are packaged together to simplify your build.
• Performance you can count on: QA1 shocks are 100% dyno tested and serialized.