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Suspension and Components Rear Suspension Components

QA1 Precision Products, Inc

QA1 73-77 GM A-Body Pro Rear Coil-Over System - MOD Series - 12in x 200lbs/in - Aluminum

$2,452.70 $2,261.93 Save $190.77

SKU: Q00B RCK52445

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: RCK52445

Don't be limited to adjustments! Completely re-valve in minutes with the MOD Series shock. Designed specifically to meet the demands required by today's high performance drag race and handling/pro-touring cars, QA1's multi-patent-pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs that can easily be swapped out, all while the shock remains on the car. An industry first, the MOD Series shock can quickly and easily be revalved without interrupting the oil path or opening the shock up for debris and air contamination. Medium compression and rebound valve packs come standard

Features:

  • Achieve 1/2 higher than stock down to 2.25" lower than stock.
  • Ultimate balance of ride quality and performance handling with adjustable rebound and compression valving.
  • Limited Lifetime Warranty for peace of mind.
  • Sold as a pair.
  • Proudly made in the USA.

Rear Pro Coil shock for 73-77 GM A-Bodies. MOD Series adjustability. Includes all mounting hardware, brackets, two shocks and 12" springs with a spring rate of 200.

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

MIA's Description

This QA1 Rear Pro Coil System is designed for 1973-1977 GM A-Body vehicles. It features MOD Series shocks, which are rebound adjustable with 18 valving options to fine-tune the ride. The system includes 12-inch, 200lb springs. It is a bolt-in system that offers ride height adjustability. This system is intended to provide improved handling and performance.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandQA1 Precision Products, Inc
Part NumberQ00B RCK52445

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Buy with Confidence

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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