If you’re looking to improve the stance, ride quality, and handling of your 1973–1987 Chevy C10 Squarebody, upgrading to a modern rear suspension system can completely transform how your truck drives. This QA1 torque arm suspension system is engineered as a complete matched solution, helping your truck feel smoother, more controlled, and more capable whether you’re cruising the street or pushing your truck harder.
Torque Arm Design for Better Traction and Control
At the center of this system is the torque arm, a proven performance suspension design used to control rear axle movement under acceleration.
By connecting the rear axle to a forward chassis mount, the torque arm manages axle rotation and drivetrain forces that typically cause leaf spring trucks to twist and unload under throttle.
Separating drivetrain forces from suspension movement allows the springs and shocks to do their job more effectively.
This design helps deliver:
- More consistent rear tire traction
- Reduced axle wrap during acceleration
- Smoother power delivery to the pavement
- Improved stability and driver confidence
The result is a Squarebody C10 that feels planted, predictable, and far more capable when you step on the throttle.
Built as a Complete Rear Suspension System
One of the biggest challenges when upgrading a 1973–1987 C10 suspension is selecting components that truly work well together.
Mixing parts from different systems often leads to compromises in ride quality, geometry, or installation complexity.
This QA1 system removes that guesswork by delivering a fully engineered rear suspension package, with components designed to function together as a balanced solution.
The benefits of a matched system include:
- More predictable handling performance
- Cleaner installation with compatible components
- Proper suspension geometry and tuning
- Confidence that the entire system works as intended
Instead of building your suspension piece by piece, you start with a complete system engineered for real-world street performance.
Double Adjustable Shocks for Advanced Suspension Tuning
This system includes double adjustable QA1 shocks, allowing independent tuning of compression and rebound.
This additional adjustability lets builders fine-tune ride quality and handling characteristics based on their goals. Whether you want a comfortable street ride or sharper handling for aggressive driving, double adjustable shocks provide the flexibility to dial in the suspension for your build.
Key Features and Benefits
- Fits 1973–1987 Chevy C10 Squarebody trucks
- Torque arm rear suspension design improves traction and axle control
- Complete rear suspension system engineered as a matched package
- Includes double adjustable QA1 shocks for advanced ride and handling tuning
- Designed for GM Truck 12-bolt rear housings
- Includes 170 lb springs
- Helps improve rear-end control, stability, and drivability
- Supports confident street performance and improved traction
- Simplifies the build with components designed to work together
- Built with the quality and engineering expected from QA1
Fitment Notes
- Fits 1973–1987 Chevrolet C10 trucks
- Designed for applications using a GM 12-bolt rear housing configuration
Specifications
- Spring Rate170lb/in.
- Axle HousingGM 12 Bolt
- Shock ValvingDouble Adjustable
