QA1 Suspension System R510-250S

Upgrade the rear suspension of your 1963-1972 Chevrolet C10 with a complete QA1 Rear Suspension System, paired with a standard-width 9-inch housing and 31-spline axles. This system combines 4-way adjustable MOD Series coil-over performance with straightforward wheel and tire fitment. The standard-width housing maintains the factory 63-5/8" wheel mounting surface width, making it easy to build around common wheel and tire combinations while maintaining the factory rear track width. FACTORY WIDTH FOR EASY WHEEL FITMENT The included 9-inch housing features a 63-5/8" wheel mounting surface width that matches the factory width. This makes wheel and tire selection more straightforward while maintaining the track width your C10 was originally designed around. 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.COMPLETE SYSTEM WITH 9-INCH HOUSING Get the suspension and rear-end components you need in one matched package. The system combines QA1 rear suspension components, 4-way adjustable MOD Series shocks, 250 lb/in. springs, a standard-width 9-inch housing and 31-spline axles to simplify your build.

• Easy wheel and tire fitment: Standard 63-5/8" wheel mounting surface width maintains the factory rear track width.
• Take control with 4-way adjustability: Independently tune high-speed and low-speed compression and rebound to dial in ride quality, handling and traction.
• Tune for the street or track: Separate damping adjustments let you optimize suspension behavior for different driving conditions and performance goals.
• Expand your tuning range: QuickTune™ valve packs allow internal valving changes without removing the shocks from the truck.
• 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, MOD Series shocks, standard-width 9-inch housing and 31-spline axles are packaged together to simplify your build.