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Home Chassis & Suspension Suspension Components QA1 Mopar Rear Coilover Conversion Systems R350-175
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RideTech TruTurn Steering Systems 11259599
RideTech TruTurn Steering Systems 11259599 $2,166.00

QA1 Mopar Rear Coilover Conversion Systems R350-175

$2,325.00

Coilover Conversion System, Rear, Double Adjustable, MOD Series, 175 lbs./in. Spring Rate, Mopar 8 3/4 or Ford 9 in., A-Body, Dodge, Plymouth, Kit

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Description

Overview

Brand: QA1
Manufacturer’s Part Number: R350-175
Part Type: Rear Suspension Packages
Product Line: QA1 Mopar Rear Coilover Conversion Systems
Summit Racing Part Number: QA1-R350-175
UPC: 806990164070
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): 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. Includes MOD series coilovers. Clearanced to allow a 3.00 in. over the axle exhaust.

QA1 Mopar Rear Coilover Conversion Systems

Upgrade your classic Mopar A, B or E body car to a triangulated four-link design with QA1’s Mopar rear coilover conversion systems. These QA1 conversion systems will transform the way your classic Mopar launches, handles, and cruises down the road! The great-looking powdercoated components improve performance and save weight—plus, you’ll enjoy a much more modern driving feel and improved handling in any setting. Order QA1’s Mopar rear coilover conversion system for your application.

Additional features:

* Proven triangulated 4-link design is popular with street/strip machines, pro-touring/road racers and autocross drivers
* Available for Mopar 8 3/4 in., Ford 9 in. and Dana 60 rear axles
* Improved traction during launch
* Easy installation that requires minimal welding
* Supports both standard and inboard spring locations
* Gain greater anti-squat and pinion angle adjustability
* Correct your wheelbase to fit larger wheels and tires
* Has clearance for 3 in. over the axle exhaust
* Single- and double-adjustable shocks eligible for limited lifetime warranty by the manufacturer
* You can add the optional rear sway bar to further reduce body roll during hard launches and cornering
* Made in the USA

Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

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