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Condition notes recorded before palletizing.
30-Day Startup Warranty
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Auto Parts & Accessories
QA1 Four Link Conversions R256-170
$1,127.37
+ $185.00 flat-rate insured LTL freight
(details)
$1,312.37 delivered to the continental US
- Palletized and heavy shrink-wrapped for freight
- LTL carrier delivery with optional liftgate service
- Ships in 1–2 business days from Los Angeles, CA
- Transit typically 3–7 business days, continental US
Secure checkout by Stripe
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
QA1 Four-Link Conversion, Ultimate Rear Suspension Upgrade!
The QA1 Four-Link Conversion (R256-170) is a state-of-the-art suspension upgrade designed to replace outdated leaf spring setups with a precision-engineered 4-link system. This setup provides better weight distribution, improved traction, and enhanced ride control, making it ideal for high-performance street driving and track applications.
Designed for easy setup, this kit allows ride height, pinion angle, and wheelbase adjustments without removing the links!
Perfect for pro-touring builds, drag racing, and street performance enthusiasts!
What’s Included in the Kit?
Double Adjustable Rear Coilover ShocksProvides custom damping adjustments for ride quality & handling
170 lbs./in. Coilover Springs (Gray/Silver Finish)Optimized for balance between comfort & performance
Double Adjustable Upper Trailing ArmsAllows pinion angle adjustments without removing links
Single Adjustable Lower Trailing ArmsFine-tune wheelbase & suspension alignment
Trailing Arm Mount Braces for Increased Chassis Rigidity
Spherical Bearing Bushings for Maximum Durability
All Necessary Mounting Hardware for a Complete Installation
Spanner Wrench for Easy Coilover Adjustments
Upgrade to QA1’s 4-link system and experience superior rear suspension stability, cornering precision, and comfort!
Technical Specifications
| Feature | Details |
|---|---|
| Brand | QA1 |
| Manufacturer Part # | R256-170 |
| Product Type | Rear Suspension Conversion Kit |
| Third Member Included? | No |
| Axle Shafts Included? | No |
| Rear Shocks Included? | Yes (Double Adjustable Coilover) |
| Coilover Springs Included? | Yes |
| Spring Rate (lbs/in.) | 170 lbs./in. |
| Suspension Package Finish | Black Powdercoated |
| Trailing Arm Mount Braces Included? | Yes |
| Adjustable Upper Trailing Arms? | Yes (Double Adjustable) |
| Adjustable Lower Trailing Arms? | Yes (Single Adjustable) |
| Bushings Included? | Yes (Spherical Bearing) |
| Sway Bar Included? | No |
| Watts Link Included? | No |
| Panhard Bar Included? | No |
| Brake Components Included? | No |
| Welding Required? | Yes |
| Quantity | Sold as a kit |
Gain superior control over your suspension geometry with this premium four-link conversion kit!
Fitment & Compatibility
Designed for Vehicles Upgrading from Leaf Springs to a 4-Link System
Compatible with Coilovers for Maximum Ride Adjustability
Ideal for Street, Drag Racing & Pro-Touring Applications
Perfect for enthusiasts looking for a suspension upgrade that balances ride quality, adjustability, and performance!
Installation Notes & Tips
Minimal Welding Required, Designed for a Smooth Installation
Adjust Ride Height, Pinion Angle & Wheelbase with a Few Tweaks, No Link Removal Needed
Ensure Proper Suspension Alignment for Optimal Performance
Pair with Performance Coilovers for Maximum Handling Benefits
Professional Installation Recommended for Best Results
Frequently Asked Questions (FAQ)
What benefits does a 4-link suspension provide over leaf springs?
- A 4-link system eliminates axle wrap, improves traction, and allows for finer suspension tuning, making it superior to leaf springs.
Do I need to modify my floor pan to install this kit?
- No! This system is designed to fit without requiring any floor pan modifications.
How adjustable is this kit?
- The double adjustable upper trailing arms and single adjustable lower trailing arms allow you to fine-tune ride height, pinion angle, and wheelbase without removing links.
Is this kit suitable for daily driving?
- Yes! While optimized for performance, the adjustable coilovers allow for ride comfort customization, making it great for both daily use and track days.
Does this kit require additional components for installation?
- No, this kit includes everything needed for installation, but professional alignment is recommended post-installation.
Call to Action, Upgrade to a Performance 4-Link Suspension Today!
Transform your vehicle’s ride, handling, and stance with the QA1 Four-Link Conversion Kit!
Fully Adjustable 4-Link Design for Maximum Performance & Comfort
Double Adjustable Coilovers for Tunable Ride Height & Suspension Control
Perfect for Street, Drag Racing & Pro-Touring Applications
Minimal Welding Required, No Floor Modifications Needed
Order Now & Take Your Suspension to the Next Level!
OverviewBrand:
QA1
Manufacturer’s Part Number:
R256-170
Part Type:
Rear Suspension Packages
Product Line:
QA1 Four Link Conversions
Summit Racing Part Number:
QA1-R256-170
UPC:
806990175205
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:
Double 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:
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:
Welding is required. Includes spanner wrench for coilovers.
Startup & Installation Checklist
- Replace timing components, water pump and plugs before initial startup where applicable.
- Refill all fluids with manufacturer-specified oil and coolant.
- Verify sensors, ECU pinouts and grounds against your chassis or hull wiring.
- Startup warranty covers heads, block and internal lubricated components for 30 days from delivery.
Full terms: 30-day startup warranty · returns
