Suspension and Components› Rear Suspension Components

QA1 Precision Products, Inc

QA1 79-04 Ford Mustang/79-86 Mercury Capri Lower Boxed Trailing Arms

$618.67

SKU: Q00B 5221

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Performance upgrade designed, built, and tested to ISO 9001 standard for quality, reliability, and performance. Fits 1979-2004 Ford Mustang (excluding 1999-2004 Cobra models) and 1979-1986 Mercury Capri, both RWD.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

Available on iOS & Android

Specifications

BrandQA1 Precision Products, Inc
Part NumberQ00B 5221

Videos

Full QA1 Suspension Install on my 1987 Mustang GT Convertible - Part 1

Full QA1 Suspension Install on my 1987 Mustang GT Convertible - Part 1
Mustang Rear Upper Control Arms Install (79-04)

Mustang Rear Upper Control Arms Install (79-04)
Suspension Upgrade Guide: Where To Start | QA1 Tech

Suspension Upgrade Guide: Where To Start | QA1 Tech
Putting SN95 Spindles on my Foxbody Mustang

Putting SN95 Spindles on my Foxbody Mustang

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.

View Full Return Policy