Suspension and Components› Suspension Kits

QA1 Precision Products, Inc

7379 F10/F150 REAR COILOVER CONVERSION KIT DOUBLE ADJ 170 SPRING RATE SWB

$3,833.28

SKU: Q00B R221-170

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

Moderate — 2–4 hours

Description

Rear suspension system with QA1's torque arm design to maximize performance without binding, allowing a 4" to 7" drop. Features adjustable watts link, torque arm, trailing arms, bracket mounts, and double-adjustable shocks with independent rebound and compression tunability. Designed for 1973-1979 F-100/F-150 9” axles with an iron 3rd member (aluminum 3rd members are not compatible), or direct-fit aftermarket 9” axles with an iron 3rd member. Parts are powder coated and include all necessary hardware. Made in the USA.

Fitment

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Specifications

BrandQA1 Precision Products, Inc
Part NumberQ00B R221-170

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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