R270-110 HD Pro Rear Drag 4-Link System, Double Adjust, 110lb Springs


Estimated Shipping Date: Jul 18, 2029
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Product Overview:
QA1's Heavy Duty Pro Rear Drag 4-link system streamlines the fabrication process, delivering professional-grade results and performance in a convenient and easy-to-order kit all from one source. This 4-link system is designed for the hardcore, discerning, do-it-yourself racer looking for a no-compromise solution to take their vehicle to the next level in performance and adjustability. High quality, MIG-Weldable components ensure a safe and properly engineered design that can be easily adapted into many drag racing setups. Find convenience, safety, and performance all from QA1 with the HD Pro Rear Drag 4-Link.

This drag race-style 4-link design is known for its performance and adjustability, and features a wide range of instant center tuning and on-car adjustability. The components are adaptable and can be cut to length to work in any setup with 40 inch or narrower frame-rails. QA1’s 7 inch travel, track-proven shocks round out the kit and offer adjustability for changing track conditions and plenty of travel and ride height tuning.

Heavy Duty Design:
This heavy-duty design can handle the demands of high-performance racing. With ¼ inch-thick plates, 1-1/4 inch trailing arm tubes, Grade 8 hardware, and QA1 chromoly rod ends, these kits are built to put down serious power. 

This kit contains all the components and hardware needed for assembly and mounting of the trailing arms, shocks, springs, and uses a diagonal link for lateral locating of the axle. However, all components can be purchased individually as well if different shock options or configurations are required for a particular build. Look to QA1 for components that will help with any drag race suspension setup.

Look to the provided dimensional diagrams and renderings to help with your custom install.

Kit Contents:
22” Trailing arm tubes, brackets, rod ends, tube adapters
40” shock crossmember and mounting tabs
40” Diagonal link kit with mounting brackets
Grade 8 hardware kit
Double Adjustable Coilover Shocks

Made in the USA
QA1 suspension is proudly made in Lakeville, Minnesota.

Best In-Class Lifetime Warranty
Register at QA1.net/warranty for lifetime coverage of your QA1 shocks

Fitment Notes
Welding required
Trailing arm tubes and diagonal links can be cut to length
Works with 3 in. axle tubes
Works on 40 in. and narrower frame rails


  • Includes ShocksYes
  • Includes SpringsYes
  • Shock ValvingDouble Adjustable
  • Spring Rate110lb/in.