Description
QA1 1988-98 C1500 Rear Coilover Conversion System – Ultimate Performance Upgrade!
The QA1 1988-98 C1500 Rear Coilover Conversion System (R140-170) is a high-performance rear suspension upgrade that replaces outdated leaf springs with adjustable coilovers, an adjustable panhard bar, and trailing arms. This easy-to-install system enhances handling, ride comfort, and suspension control while maintaining full adjustability.
Perfect for street performance, towing, and daily driving applications!
What’s Included in the Kit?
✅ QA1 Adjustable Coilover Shocks – Fine-tune damping for performance or comfort
✅ 170 lbs./in. Coilover Springs – Designed for a smooth yet stable ride
✅ Adjustable Panhard Bar – Ensures proper rear axle alignment
✅ Torque Arm Suspension with C-Notch Bracket – Improves rear-end stability & support
✅ Adjustable Lower Trailing Arms – Allows fine-tuning of suspension geometry
✅ All Necessary Mounting Hardware – Complete installation package
Everything you need for a modern-handling C1500 in one complete package!
Technical Specifications
| Feature | Details |
|---|---|
| Brand | QA1 |
| Manufacturer Part # | R140-170 |
| Product Type | Rear Suspension Package |
| Designed For | 1988-98 Chevy/GMC C1500 (10-Bolt Differential Only) |
| Ride Height Adjustment | 4-7 inches of drop |
| Shock Type | Single Adjustable Coilover |
| Coilover Spring Rate | 170 lbs./in. |
| Spring Finish | Gray/Silver |
| Suspension Finish | Black Powdercoated |
| Adjustable Panhard Bar | ✅ Yes (On-Car Adjustable) |
| Lower Trailing Arms | ✅ Yes (On-Car Adjustable) |
| Trailing Arm Mount Braces | ✅ Yes |
| Bed Removal Required? | ❌ No |
| Welding Required? | ❌ No |
| Hardware Included? | ✅ Yes |
| Brake Components Included? | ❌ No |
| Quantity | Sold as a kit |
⚡ Optimized for enhanced stability, improved traction, and a modern ride feel!
Fitment & Compatibility
✔ Fits 1988-1998 Chevrolet & GMC C1500 Models
✔ Designed for trucks with 10-bolt rear differentials only
✔ Compatible with factory and aftermarket wheels/suspension setups
Ensure proper fitment before purchasing!
Installation Notes & Tips
Direct Bolt-On Installation – No welding or bed removal required
⚙️ Includes all necessary hardware for easy install
Adjustable panhard bar ensures proper rear axle alignment
Professional installation recommended for best performance
⚠️ Not compatible with 12-bolt rear differentials
❓ Frequently Asked Questions (FAQ)
How does this system improve handling over stock suspension?
- The QA1 coilover conversion eliminates factory leaf springs and replaces them with adjustable coilovers and a panhard bar, providing better handling, reduced body roll, and superior ride quality.
Is this a direct bolt-on kit?
- Yes! This system bolts directly to factory mounting points with no cutting or welding required.
Can I adjust my ride height with this kit?
- Yes! The system allows for a 4 to 7-inch rear drop for a more aggressive stance.
Will this work with my stock wheels and brakes?
- Yes! The kit is compatible with stock and aftermarket setups.
Does this kit include disc brakes?
- No. The system does not include brakes, but is compatible with factory and aftermarket brake setups.
Call to Action – Upgrade Your C1500’s Suspension Today!
Transform your classic Chevy/GMC truck with the QA1 1988-98 C1500 Rear Coilover Conversion System!
✔ Upgrade your suspension for modern performance
✔ Lower your truck 4-7 inches for a custom stance
✔ Improve handling, ride quality, and axle alignment
✔ Bolt-on installation – No welding or bed removal required!
Order Now & Experience the Best Rear Suspension Upgrade for Your C1500!
Overview
Brand:
QA1
Manufacturer’s Part Number:
R140-170
Part Type:
Rear Suspension Packages
Product Line:
QA1 1988-98 C1500 Rear Coilover Conversion Systems
Summit Racing Part Number:
QA1-R140-170
UPC:
806990158932
Third Member Included:
No
Axle Shafts Included:
No
Upper Control Arms Included:
No
Lower Control Arms Included:
No
Air Bags Included:
No
Rear Shocks/Struts Included:
Yes
Rear Shock Type:
Single adjustable coilover
Coilover Springs Included:
Yes
Coilover Spring Rate (lbs/in):
170 lbs./in.
Spring Finish:
Gray/Silver
Suspension Package Finish:
Black powdercoated
Bushings Included:
No
Sway Bar Included:
No
Watts Link Included:
No
Panhard Bar Included:
Yes
Adjustable Panhard Bar Included:
Yes
Adjustable Panhard Bar Type:
On car adjustable
Upper Trailing Arms Included:
No
Adjustable Upper Trailing Arms Included:
No
Lower Trailing Arms Included:
Yes
Adjustable Lower Trailing Arms Included:
Yes
Adjustable Lower Trailing Arms Type:
On car adjustable
Trailing Arm Mount Braces Included:
Yes
Trailing Arm Hardware Included:
Yes
Rotors Included:
No
Calipers Included:
No
Quantity:
Sold as a kit.
Notes:
For 4.000-7.000 in. of rear drop. Fit models with 10-bolt rear differentials only.
