Description
QA1 Mopar Rear Coilover Conversion System – Upgrade Your Classic Mopar’s Suspension!
The QA1 Mopar Rear Coilover Conversion System (R155-175) is an all-in-one solution to transform your classic Mopar A, B, or E-Body muscle car into a high-performance machine. This bolt-in triangulated 4-link rear suspension setup improves launch traction, ride comfort, and adjustability, giving you the perfect stance and modern handling feel.
Designed for street performance, autocross, drag racing, and pro-touring applications!
Perfect for classic Mopar owners who want better suspension geometry and adjustability!
What’s Included in the Kit?
✅ Rear Coilover Shocks (Single Adjustable) – Tune your suspension for ride comfort or performance
✅ 175 lbs./in. Coilover Springs – Optimized for street & track driving
✅ Adjustable Upper & Lower Trailing Arms – Dial in wheelbase, traction, and handling
✅ Trailing Arm Mount Braces & Hardware – Reinforces chassis for added stability
✅ Clearance for 3” Over-the-Axle Exhaust – No need to modify your exhaust system
✅ Supports Standard & Inboard Spring Locations – More flexibility in suspension setup
Upgrade your Mopar’s rear suspension with modern 4-link geometry and coilover adjustability!
Technical Specifications
| Feature | Details |
|---|---|
| Brand | QA1 |
| Manufacturer Part # | R155-175 |
| Product Type | Rear Coilover Conversion System |
| Suspension Design | Triangulated 4-Link |
| Rear Shocks Included? | ✅ Yes (Single Adjustable Coilovers) |
| Coilover Spring Rate | 175 lbs./in. |
| Spring Finish | Black |
| Suspension Finish | Black Powdercoated |
| Bushings Included? | ✅ Yes (Spherical Bearings) |
| Adjustable Upper Trailing Arms? | ✅ Yes (Double Adjustable) |
| Adjustable Lower Trailing Arms? | ✅ Yes (Single Adjustable) |
| Supports Axles | Mopar 8 3/4″, Ford 9″, Dana 60 |
| Ride Height Adjustment? | Yes |
| Exhaust Clearance? | Yes (3” Over-the-Axle Clearance) |
| Installation Type | Bolt-On (Minimal Welding Required) |
| Sway Bar Included? | ❌ No (Optional Add-On) |
| Panhard Bar Included? | ❌ No |
| Quantity | Sold as a Complete Kit |
⚡ Achieve modern performance while keeping your Mopar’s classic style!
Fitment & Compatibility
✔ Designed for Classic Mopar A, B, & E-Body Vehicles
✔ Compatible with Mopar 8 3/4″, Ford 9″, and Dana 60 Rear Differentials
✔ Works with Standard & Inboard Spring Locations
✔ Supports Large Wheels & Tires with Wheelbase Adjustments
Ideal for both street and track builds!
Installation Notes & Tips
Minimal welding required – Mostly bolt-in for easier installation
⚙️ Provides better suspension geometry & weight distribution
Allows fine-tuning of pinion angle & wheelbase for maximum performance
For best results, pair with QA1’s front coilover conversion system
⚠️ Professional installation recommended for optimal performance!
❓ Frequently Asked Questions (FAQ)
How does this system improve handling?
- The triangulated 4-link design and coilover shocks enhance traction, stability, and ride comfort, reducing wheel hop and increasing control during acceleration and cornering.
What rear axle does this kit support?
- This kit is designed to work with Mopar 8 3/4″, Ford 9″, and Dana 60 rear axles.
Do I need to modify my exhaust?
- No! This kit is designed with 3” over-the-axle exhaust clearance, so you won’t need to alter your existing exhaust system.
Is welding required?
- Minimal welding is needed. Most components bolt directly into place for easier installation.
Can I install this kit myself?
- Yes, if you have experience with suspension work. Otherwise, professional installation is recommended for best results.
Does this kit include a sway bar?
- No, but an optional rear sway bar is available separately for added stability and cornering performance.
Call to Action – Upgrade Your Classic Mopar Today!
Transform your Mopar’s rear suspension for modern performance and adjustability!
✔ Triangulated 4-Link Suspension for Maximum Control
✔ Adjustable Coilovers for Custom Ride Height & Handling
✔ Compatible with Multiple Axles & Large Wheel/Tire Combos
✔ Bolt-In Installation with Minimal Welding Required
Order Now & Experience the Ultimate Rear Suspension Upgrade for Your Mopar!
Overview
Brand:
QA1
Manufacturer’s Part Number:
R155-175
Part Type:
Rear Suspension Packages
Product Line:
QA1 Mopar Rear Coilover Conversion Systems
Summit Racing Part Number:
QA1-R155-175
UPC:
806990163134
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):
175 lbs./in.
Spring Finish:
Black
Suspension Package Finish:
Black powdercoated
Bushings Included:
Yes
Bushing Material:
Spherical bearing
Sway Bar Included:
No
Watts Link Included:
No
Panhard Bar Included:
No
Adjustable Panhard Bar Included:
No
Upper Trailing Arms Included:
Yes
Adjustable Upper Trailing Arms Included:
Yes
Adjustable Upper Trailing Arms Type:
Double adjustable
Lower Trailing Arms Included:
Yes
Adjustable Lower Trailing Arms Included:
Yes
Adjustable Lower Trailing Arms Type:
Single adjustable
Trailing Arm Mount Braces Included:
Yes
Trailing Arm Hardware Included:
Yes
Rotors Included:
No
Calipers Included:
No
Quantity:
Sold as a kit.
Notes:
Kit for use with Mopar 8 3/4 and Ford 9 in. rear differentials.
