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QA1 Mopar Front Street Performance Coilover Conversion Systems 52346-S400

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Parts & Accessories

QA1 Mopar Front Street Performance Coilover Conversion Systems 52346-S400

SKU 129f2005c146

Car Chassis & Suspension Kits

$3,045.51

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No warranty

Commercial use may carry a shorter period than pleasure use.

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Freight — oversize — from $349. Ships in 1–3 business days, 3–10 business days in transit.

Freight damage must be noted on the delivery receipt and reported within 48 hours of delivery.

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Returns

30-day return window · 25% restocking fee plus freight both ways.

Engines or transmissions that have been disassembled or parted out cannot be returned.

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Some engines and transmissions carry a refundable core charge, shown on the product page where it applies.

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Specification

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Part number
129f2005c146
Department
Parts & Accessories
Category
Car Chassis & Suspension Kits

In the seller's words

Description

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Mopar Front Street Performance Coilover Conversion System (52346-S400) is an advanced suspension upgrade that replaces outdated components with modern coilovers, tubular control arms, and rack-and-pinion steering.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 Crossmember – Provides rigidity and improves suspension strength
✅ Stock-Height Spindles – Maintains proper suspension geometry
✅ Tubular Upper & Lower Control Arms – Stronger, lighter, and optimized for handling
✅ QA1 Single Adjustable Coilovers – Dial in compression and rebound settings
✅ 400 lb./in. Coilover Springs – Designed for street performance and daily driving
✅ Rack-and-Pinion Steering System – Provides precise steering response and reduces play
✅ Inner & Outer Tie Rod Ends – Ensures alignment and stability
✅ All Necessary Mounting Hardware – Complete 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!

Overview

Brand:
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.

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