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Product Overview: QA1's Heavy Duty Pro Rear Drag 4-link kit 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. Performance: 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. Heavy Duty Design: This heavy-duty design can handle the 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 and four link. A lateral locating device is required, and you can look to QA1 for additional components that will help with 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 Grade 8 hardware kit Made in the USA 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 Does not include a lateral locating device