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Build a properly matched suspension or steering setup with this QA1 suspension packages. Manufacturer part number R230-250 is offered in the listed 73-87 Chevy C10 Rear Suspension Conversion System - Firm - GM 10 Bolt - Double Adj. (250lbs/in) configuration, so vehicle application, mounting position, dimensions, spring rate, adjustment range, and all notes must be confirmed before ordering.
Key Features
- Double Adjustable Coil-Overs: Firm 250 lb/in springs with independent rebound and compression damping adjustments for tailored ride and handling.
- Ride Height Adjustment: Threaded spring seats offer 4 to 7 inches of drop below stock easily set perfect stance paired with QA1 front systems.
- Complete Kit: Includes torque arm crossmember coil-overs control arms hardware and bushings everything needed for installation.
- Double adjustable with 24-position rebound and 16-position compression knobs plus threaded height adjustment 4-7 inches drop.
- Bolt-in Torque Arm Design: Provides precise suspension control and eliminates binding common in 4-link setups for consistent performance on street or track.
- USA Made Dyno Tested: All parts manufactured in Lakeville Minnesota with shocks serialized and 100% dyno tested for reliability.
Fitment
| Years | Make | Model | Submodel or Application |
|---|---|---|---|
| 1978-1980 | Chevrolet | C10 | Big Ten |
| 1975-1981 | Chevrolet | C10 | Cheyenne |
| 1981-1986 | Chevrolet | C10 | Custom |
| 1975-1980 | Chevrolet | C10 | Custom Deluxe |
| 1981 | Chevrolet | C10 | Deluxe |
| 1975-1986 | Chevrolet | C10 | Scottsdale |
| 1975-1986 | Chevrolet | C10 | Silverado |
| 1973-1974 | Chevrolet | C10 Pickup | All listed configurations unless otherwise noted |
| 1973-1974 | Chevrolet | C10 Suburban | All listed configurations unless otherwise noted |
| 1981-1986 | Chevrolet | C10 Suburban | Custom |
| 1975-1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1975-1980 | Chevrolet | C10 Suburban | Scottsdale |
| 1982 | Chevrolet | C10 Suburban | Scottsdale |
| 1984-1986 | Chevrolet | C10 Suburban | Scottsdale |
| 1975-1980 | Chevrolet | C10 Suburban | Silverado |
| 1982-1986 | Chevrolet | C10 Suburban | Silverado |
Confirm chassis configuration, suspension position, drivetrain clearance, brake package, wheel and tire clearance, and every current QA1 application note.
Specifications
| Brand | QA1 |
|---|---|
| Manufacturer Part Number | R230-250 |
| Product Type | Suspension Packages |
| Listed Configuration | 73-87 Chevy C10 Rear Suspension Conversion System - Firm - GM 10 Bolt - Double Adj. (250lbs/in) |
| Compatibility Basis | Vehicle Specific |
| Condition | New |
What's Included
One new QA1 suspension packages identified by manufacturer part number R230-250, with only the components and hardware supplied by QA1 for that exact part number.
About QA1
QA1 develops suspension, steering, driveline, rod-end, bearing, spring, and chassis components for street, performance, racing, restoration, and custom vehicle applications.
Related QA1 Products
- Shop all QA1 products
- QA1 73-87 Chevy C10 Rear Suspension Conversion System - Soft - GM 10 Bolt - Single Adj. (170lbs/in)
- QA1 63-72 Chevrolet C10 Rear Suspension Conversion System - Firm - Double Adjustable (250lbs/in)
- QA1 63-72 Chevrolet C10 Rear Suspension Conversion System - Medium - Double Adjustable (200lbs/in)
Frequently Asked Questions
Will QA1 R230-250 fit my 1978-1980 Chevrolet C10?
Match the complete fitment row, then verify mounting position, suspension configuration, drivetrain clearance, brake package, wheel and tire clearance, and every current QA1 note.
What measurements matter when ordering QA1 R230-250?
Verify the dimensions and interfaces named in this listing, including thread size and direction, extended and compressed length, bore, spring dimensions or rate, mounting style, and available clearance as applicable.
Does QA1 R230-250 require setup after installation?
Suspension and steering work commonly requires torque verification, clearance and travel checks, ride-height or damping setup when adjustable, and a professional alignment before road use.
Installation
Follow the current QA1 instructions for this exact part number. Support the vehicle safely, compare every component before disassembly, use the specified hardware and torque values, verify thread engagement and mounting orientation, cycle the suspension through its operating range, check brake and wheel clearance, and complete an alignment when the installation changes suspension or steering geometry.
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