QA1 Suspension System R520-200S

Upgrade the rear suspension of your 1965-1972 Ford F-100 with a complete QA1 Rear Suspension System, paired with a standard-width 9-inch housing, 31-spline axles and 4-way adjustable QA1 MOD Series shocks. QA1's unique torque arm design improves handling and traction without the inherent binding of many traditional suspension designs, while providing an adjustable 4-7" drop. The standard-width housing maintains the factory 61-1/8" wheel mounting surface width for straightforward wheel and tire fitment. Combined with the advanced tuning capability of MOD Series shocks, this system gives performance-focused builds greater control over stance, ride quality and handling. FACTORY WIDTH FOR EASY WHEEL FITMENT The included 9-inch housing features a 61-1/8" wheel mounting surface width that matches the factory width. This makes wheel and tire selection more straightforward while maintaining the track width your F-100 was originally designed around. The housing includes 31-spline axles, Big Ford New Style Torino housing ends and dual 5x4.5" and 5x4.75" bolt patterns for compatibility with a wide range of brake and wheel combinations. IMPROVED HANDLING WITHOUT SUSPENSION BIND QA1's unique torque arm design allows the rear suspension to move freely without the inherent binding associated with many traditional suspension designs. The result is improved traction, suspension control and a more modern driving experience. DIAL IN YOUR STANCE Achieve an aggressive stance with an adjustable 4-7" rear drop. The panhard bar, torque arm, trailing arms, bracket mounts and shocks can be adjusted independently, giving you greater control over ride height, axle position and overall suspension setup.

• Easy wheel and tire fitment: Standard 61-1/8" 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.
• Improve handling and traction: QA1's torque arm design allows the suspension to move freely without the inherent bind of many traditional suspension designs.
• Dial in the perfect stance: Adjustable 4-7" drop lets you get your F-100 sitting exactly where you want it.
• Fine-tune your suspension setup: Independently adjustable suspension components provide greater control over ride height, axle position and geometry.
• Build around your preferred wheels and brakes: Dual wheel 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, MOD Series shocks, standard-width 9-inch housing and 31-spline axles are packaged together to simplify your build.