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SKU: R210-250 | UPC: 806990152510
QA1 63-72 Chevrolet C10 Rear Suspension Conversion System - Firm - Double Adjustable (250lbs/in)
QA1's bolt-on R210-250 rear suspension conversion system upgrades 1963-1972 Chevrolet C10 trucks from factory coil-spring setups to double adjustable coil-overs with 250 lb/in firm springs. This kit delivers up to 6 inches of drop while allowing precise ride height tuning at each corner for ideal stance and performance. Tubular components ensure direct bolt-on installation without removing the truck bed, improving geometry for sharper cornering and stability.
Key Features
- Double Adjustable Coil-Overs: Firm 250 lb/in springs with independent rebound and compression damping adjustments for custom ride control and handling response on street or track.
- Tubular Upper and Lower Control Arms: Integrated pinion angle shims eliminate add-on adjustments and allow exact wheelbase setup for consistent drivetrain performance.
- Adjustable Panhard Bar: Keeps the rear axle centered under the vehicle for predictable handling and reduced body roll during corners.
- Multiple Roll Center Mounts: Corrects geometry based on drop amount to maintain stability and prevent bump steer after lowering.
- Outboard Coil-Over Mounting: Positions shocks outside the frame rail near the wheels for better leverage, enhanced cornering grip, and clearance for aftermarket fuel tanks.
Product Notes
- Bolt-on design fits factory frame without modifications or bed removal.
- Requires 4.5-inch backspacing wheels minimum for clearance.
- Double adjustable coil-overs include rebuild service option from QA1.
Installation Notes
- Professional installation recommended.
- Comes with all necessary hardware, bushings, and instructions for direct bolt-on fit.
- Compatible with factory leaf spring perches. no welding required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1963-1972 | Chevrolet | C10 | Fleetside Pickup |
| 1963-1972 | Chevrolet | C10 | Stepside Pickup |
| 1963-1972 | Chevrolet | C20 | Fleetside Pickup |
| 1963-1972 | Chevrolet | C20 | Stepside Pickup |
| 1967-1972 | GMC | C15 | Fleetside Pickup |
| 1967-1972 | GMC | C15 | Stepside Pickup |
| 1967-1972 | GMC | C25 | Fleetside Pickup |
| 1967-1972 | GMC | C25 | Stepside Pickup |
Why Choose QA1?
- Motorsports-proven components used in drag racing and circle track applications.
- Precision CNC-machined parts with cadmium plating for corrosion resistance and durability.
- Engineered in the USA with direct bolt-on fitment tested on real vehicles.
Frequently Asked Questions
-
Q: Will this kit fit 1963-1972 C10 and C20 Fleetside and Stepside trucks?
A: Yes, designed specifically for 1963-1972 Chevrolet C10/C20 and 1967-1972 GMC C15/C25 Fleetside/Stepside 2WD pickups with factory coil-spring rear suspension. excludes Suburban, Blazer, and 4WD models. -
Q: What materials are used in the control arms and panhard bar?
A: Heavy-duty 1.5-inch OD x 0.120-wall DOM tubing with greaseable polyurethane bushings and CAD-designed ends for strength and smooth operation. -
Q: What is the warranty and adjustability range?
A: QA1 offers a 2-year warranty on coil-overs. double adjustable shocks provide 24 clicks rebound and 16 clicks compression for full tuning range.
Shipping & Handling
- Method: Truck freight
- Availability: In stock - ships same or next business day
- Packaging: Ships in one oversized box measuring 50 x 20 x 16 inches
- Weight: 112 lbs
QA1
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