Part Number: R173-170
 
Suspension Type: Universal 
 
Spring Rate: 170 lbs
 
Adjustability: Single 
 
Stroke: 5" 
 
PRODUCT OVERVIEW:
QA1's Heavy Duty Pro Rear Triangulated 4-link system simplifies the fabrication process for vehicles lacking aftermarket suspension support. These DIY kits produce professional-quality results and performance in a convenient, easy-to-order package. Designed for the DIY enthusiast, this 4-link system delivers exceptional performance and handling. High-quality, MIG-weldable components ensure a safe and well-engineered design adaptable to various vehicles. Experience convenience, safety, and performance with QA1's HD Pro Rear Triangulated 4-Link.
 
PERFORMANCE
This triangulated 4-link design is known for its performance and adjustability, offering a wide range of customization options for enhanced handling on both the street and the track. The adaptable components can be cut to length to accommodate any setup with 40-inch or narrower frame rails. QA1's 5-inch travel Single Adjustable Proma Star shocks complete the kit, providing adjustable performance from the street to the track with ample travel and ride height tuning options.
 
HEAVY DUTY DESIGN
This heavy-duty design is engineered to withstand high-performance driving, from rough road conditions to high-speed track days. Constructed with precision laser cut and formed brackets, 1-1/2” lower trailing arm tubes, Grade 8 trailing arm hardware, and QA1 chromoly rod ends, these kits are built to handle some abuse.
 
ADAPTABILITY
This kit includes all necessary components and hardware for assembling and mounting the trailing arms, shocks, and springs. Designed for versatility, these kits can be cut to length to accommodate most vehicles. The lower trailing arms include an assortment of spacers to easily mount into common leaf spring mounts but can also be adapted into any rear suspension system.
Refer to the provided dimensional diagrams and renderings for assistance with your custom installation.
 
KIT CONTENTS:
Trailing arm tubes, brackets, rod ends, tube adapters
40” upper trailing arm and shock crossmember
All required hardware
Single Adjustable Coilover Shocks
 
MADE IN THE USA
QA1 suspension is proudly made in Lakeville, Minnesota.
 
FITMENT NOTES
Welding required
Trailing arm tubes can be cut to length
Works with 3 in. axle tubes
Works on 40 in. and narrower frame rails