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Condition notes recorded before palletizing.
30-Day Startup Warranty
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Auto Parts & Accessories
QA1 Mopar Front Street Performance Coilover Conversion Systems 52346-S400
$3,045.51
+ $295.00 flat-rate insured LTL freight
(details)
$3,340.51 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 Mopar Front Street Performance Coilover Conversion System, Ultimate Handling Upgrade!
The QA1 Mopar Front Street Performance Coilover Conversion System (52346-S400) is an advanced suspension upgrade that replaces outdated components with modern coilovers, tubular control arms, and rack-and-pinion steering. Designed for classic Mopar B/E-body muscle cars, this system significantly improves steering precision, suspension geometry, and ride comfort.
Perfect for everyday street driving, drag racing, and autocross performance!
What’s Included in the Kit?
Steel CrossmemberProvides rigidity and improves suspension strength
Stock-Height SpindlesMaintains proper suspension geometry
Tubular Upper & Lower Control ArmsStronger, lighter, and optimized for handling
QA1 Single Adjustable CoiloversDial in compression and rebound settings
400 lb./in. Coilover SpringsDesigned for street performance and daily driving
Rack-and-Pinion Steering SystemProvides precise steering response and reduces play
Inner & Outer Tie Rod EndsEnsures alignment and stability
All Necessary Mounting HardwareComplete installation package
Everything you need for a modern-handling Mopar muscle car in one complete package!
Technical Specifications
| Feature | Details |
|---|---|
| Brand | QA1 |
| Manufacturer Part # | 52346-S400 |
| Product Type | Front Suspension Package |
| Crossmember Included | Yes (Steel) |
| Welding Required | No |
| Spindle Type | Stock Height |
| 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) |
| Brake Kit Included? | No |
| Ride Height Adjustment | 0-2 inches |
| Tie Rod Ends Included? | Yes |
| Mounting Hardware Included? | Yes |
| Installation Type | Bolt-On |
| Quantity | Sold as a Kit |
Built for enhanced stability, ride comfort, and precise steering control!
Fitment & Compatibility
Fits Classic Mopar B/E-Body Cars
Compatible with 1966-74 Dodge Charger, Coronet, Plymouth Road Runner, GTX, and more
Works with factory and aftermarket 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
Engine mounts must be purchased separately!
Frequently Asked Questions (FAQ)
How does this system improve handling over stock suspension?
- The QA1 coilover conversion replaces outdated torsion bars and worn suspension components with modern coilovers, tubular control arms, and a rack-and-pinion steering system. This results in better handling, reduced body roll, and a much smoother ride.
Is this a direct bolt-on kit?
- Yes! The entire system is designed for bolt-on installation, with no cutting or welding required.
Can I use my factory steering components with this kit?
- No. This kit comes with a rack-and-pinion system, which replaces the outdated steering box for better steering response and control.
Can I adjust my ride height with this kit?
- Yes! The coilovers allow ride height adjustment from 0-2 inches.
Does this kit include disc brakes?
- No. The kit is compatible with factory and aftermarket brake systems, but does not include rotors or calipers.
Call to Action, Upgrade Your Mopar’s Suspension Today!
Transform your classic Dodge or Plymouth into a modern-handling performance machine with the QA1 Mopar Front Street Performance Coilover Conversion System!
Upgrade your steering with rack-and-pinion precision
Lower your car up to 2 inches for a more aggressive stance
Improve ride quality, handling, and cornering stability
Bolt-on installation, No welding required!
Order Now & Experience the Best Suspension Upgrade for Classic Mopars!
OverviewBrand:
QA1
Manufacturer’s Part Number:
52346-S400
Part Type:
Front Suspension Packages
Product Line:
QA1 Mopar Front Street Performance Coilover Conversion Systems
Summit Racing Part Number:
QA1-52346-S400
UPC:
806990163592
Crossmember Included:
Yes
Crossmember Material:
Steel
Crossmember Color:
Black powdercoated
Welding Required:
No
Front Spindles Included:
Yes
Spindle Type:
Stock height
Spindle Finish:
Black powdercoated
Upper Control Arms Included:
Yes
Lower Control Arms Included:
Yes
Control Arm Style:
Tubular
Control Arm Material:
Steel
Control Arm Color:
Black
Upper Ball Joints Included:
Yes
Lower Ball Joints Included:
Yes
Rack and Pinion Included:
Yes
Steering Rack Type:
Hydraulic power assist
Rack Color:
Black
Shocks Included:
Yes
Shock Type:
Single adjustable coilover
Coilover Springs Included:
Yes
Coilover Spring Rate (lbs/in):
400 lbs./in.
Spring Finish:
Black
Disc Brake Kit Included:
No
Front Rotor Included:
No
Front Caliper Included:
No
Brake Pads Included:
No
Sway Bar Included:
No
Center Link Included:
No
King Pins Included:
No
King Pin Bearings Included:
No
Pitman Arm Included:
No
Idler Arm Included:
No
Tie Rod Sleeves Included:
Yes
Inner Tie Rod Ends Included:
Yes
Outer Tie Rod Ends Included:
Yes
Quantity:
Sold as a kit.
Notes:
Engine mounts must be purchased separate. Kit provides up to 2 in. of drop.
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
