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QA1 Precision Products, Inc

QA1 73-87 Chevy C10 Rear Suspension Conversion System - Medium - GM 12 Bolt- Single Adj. (200lbs/in)

$3,199.38 $3,035.95 Save $163.43

SKU: Q00B R131-200

In Stock
In Stock
Ships by Oct 9
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The QA1 Rear Suspension System is a coil-over conversion kit designed to enhance the stance, ride quality, and handling of 1973-1987 Chevy C10 Squarebody trucks. This system features a torque arm design to manage rear axle movement under acceleration, reducing axle wrap and improving traction. It's engineered as a complete, matched solution for easier installation and predictable performance, utilizing single adjustable QA1 shocks for personalized tuning and 200 lb springs. This kit is specifically designed for applications using a GM 12-bolt rear housing.
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Part #: R131-200

With this all-new, engineered-from-scratch rear system, 1973-1987 C10 owners can add modern performance to a pickup that was designed for utility-all without removing the bed of the truck. QA1 engineered a unique bolt-in torque arm design that maximizes performance without the inherent binding issues of other 4-link systems. This provides superior control over suspension movement, resulting in a smooth ride and great handling characteristics. Dialing in the stance will be easy with the adjustable coil-over system 4" to 7" of adjustment below stock can easily be achieved. Pair this rear system with QA1's front system to have ride height adjustability on all four corners, giving you that perfect level stance. Everything you need is included, all the way down to the hardware. All components included in these systems are proudly made in QA1's Lakeville, Minnesota facility. All QA1 shocks are 100% dyno tested and serialized.

Features:

  • QA1 uniquely engineered to enhance the performance of your vehicle
  • Ride height adjustability
  • Adjustable shock valving options for all driving styles
  • Easy bolt-in install
  • Best-in-class warranty
  • Made in the USA

Rear Suspension Kit - Single Adjustable - 200 lb/in Spring Rate - Crossmember / Panhard Bar / Shocks / Springs / Torque Arms / Trailing Arms - Steel - Black Powder Coat - GM 12 Bolt - GM Fullsize Truck 1973-87 - Kit

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandQA1 Precision Products, Inc
Part NumberQ00B R131-200

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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