Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Suspension and Components› Suspension Kits
QA1 Precision Products, Inc
QA1 Heavy Duty Pro Rear Drag 4-Link System - Single Adjustable - 150lb Springs
SKU: Q00B R170-150
Advanced — 4+ hours
Overview
Show original supplier description
Part #: R170-150
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, easy-to-order kit from one source. This 4-link system is designed for the hardcore, do-it-yourself racer looking for a solution to take their vehicle to the next level. 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. Performance: This drag race-style 4-link design is known for its performance and adjustability, with a wide range of instant center tuning and on-car adjustability. The components 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 track conditions, and plenty of travel. Heavy Duty Design: This heavy-duty design can handle demands of high-performance racing. With 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. Adaptability: 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. All components can be purchased individually if different configurations are required. Look to QA1 for components that will help in any drag race suspension. Kit Contents: 22 Trailing arms, brackets, rod ends, tube adapters 40 shock crossmember and mounting tabs 40 Diagonal link kit with mounting brackets Grade 8 hardware Single Adjustable Coilover Shocks 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
Features:
- Streamline your custom fabrication process
- Heavy-duty design
- Wide range of tunability
- Includes all hardware
- Best-in-class warranty
- Made in the USA
QA1 HD Pro Rear Drag 4-Link System includes brackets, trailing arms, diagonal link kit, hardware, tube adapters, QA1 rod ends, QA1 coilovers, and shock crossmember to build a performance drag race style 4-link suspension.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
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
| Brand | QA1 Precision Products, Inc |
| Part Number | Q00B R170-150 |
Videos
About MOTORMIA
Buy with Confidence
Returns & Fitment
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 PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy