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. 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 BEST IN-CLASS LIFETIME WARRANTY Register at QA1.net/warranty for lifetime coverage of your QA1 shocks 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