In Stock
QA1 Mopar Front Street Performance Coilover Conversion Systems 52343-S400
- 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
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
The QA1 Mopar Front Street Performance Coilover Conversion System (52343-S400) is the ultimate bolt-on front suspension upgrade for your classic Mopar muscle car. Whether you’re daily driving, drag racing, or hitting autocross events, this performance suspension system offers superior handling, ride quality, and modern steering response.
Designed for Dodge Charger, Road Runner, and other classic Mopars, this kit replaces outdated suspension components with precision-engineered, lightweight parts that reduce weight and optimize performance.
What’s Included in the Kit?
High-Strength Steel CrossmemberPowdercoated for long-lasting durability
Tubular Upper & Lower Control ArmsOptimized for performance and improved suspension geometry
QA1 Single-Adjustable CoiloversFine-tune your ride for optimal comfort and control
400 lb./in. Coilover SpringsPrecision-balanced for stability and ride quality
Rack-and-Pinion Steering SystemSmooth, responsive steering with hydraulic power assist
Steel Stock-Height Front SpindlesStrong and durable for added reliability
Inner & Outer Tie Rod EndsEnhance steering precision and stability
Bolt-On InstallationNo welding required for a hassle-free upgrade
Everything you need to enhance your Mopar’s front-end performance in one complete package!
Technical Specifications
| Feature | Details |
|---|---|
| Brand | QA1 |
| Manufacturer Part # | 52343-S400 |
| Product Type | Front Suspension Package |
| Crossmember Included | Yes (Steel, Powdercoated) |
| Welding Required | No |
| Spindle Type | Stock Height |
| Spindle Material | Steel (Black Powdercoated) |
| Upper Control Arms | Yes (Tubular Steel) |
| Lower Control Arms | Yes (Tubular Steel) |
| Shock Type | Single-Adjustable Coilover |
| Coilover Spring Rate | 400 lbs./in. |
| Rack & Pinion Steering | Yes (Hydraulic Power Assist) |
| Steering Rack Color | Black |
| Brake Kit Included? | No |
| Ride Height Adjustment | 0 to 2 inches of drop |
| Tie Rod Ends Included? | Yes |
| Mounting Hardware Included? | Yes |
| Installation Type | Bolt-On |
| Quantity | Sold as a Kit |
Perfect for daily driving, autocross, or drag racing applications, built for modern handling and performance!
Fitment & Compatibility
Fits classic Dodge & Plymouth B/E-body Mopar muscle cars
Designed for use with multiple engine configurations (including Gen 3 Hemi swaps)
Compatible with stock-height spindles and aftermarket disc brake systems
Ensure proper fitment before purchasing!
Installation Notes & Tips
Direct Bolt-On Installation, No welding required
All necessary hardware is included
Rack-and-pinion upgrade improves steering response
Professional installation recommended for best performance
This kit provides up to 2 inches of ride height drop, ensure proper wheel and tire fitment before installation!
Frequently Asked Questions (FAQ)
What makes this kit better than the stock Mopar suspension?
- The QA1 coilover conversion replaces the outdated torsion bar suspension with a modern coilover system, tubular control arms, and rack-and-pinion steering for better ride quality, sharper handling, and reduced weight.
Is this system compatible with Gen 3 Hemi swaps?
- Yes! The tubular control arm design improves exhaust clearance, making engine swaps much easier.
Can I use this kit for autocross or drag racing?
- Absolutely! While single-adjustable shocks are great for street driving, upgrading to double-adjustable coilovers would provide even greater tuning flexibility for racing applications.
Do I need to modify my frame to install this?
- No. This is a bolt-in system that does not require any frame modifications or welding.
Can I use my factory sway bar with this kit?
- Yes, but aftermarket sway bars may offer better performance and adjustability.
Call to Action, Upgrade Your Mopar’s Suspension Today!
Transform your classic Mopar into a modern-handling machine with the QA1 Mopar Front Street Performance Coilover Conversion System!
Eliminate outdated torsion bar suspension
Upgrade to rack-and-pinion steering for better response
Adjust your ride height for the perfect stance
Reduce weight & improve exhaust clearance
Enhance stability, comfort, and cornering precision
Order Now & Experience the Best Suspension Upgrade for Classic Mopars!
OverviewStartup & 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