Fabtech 14-18 GM K1500 w/OE Alum. UCA 4in Uniball UCA System w/DL 2.5 Resi Coilover & Rear DL Shocks

Fabtech is known for building tough suspension components designed for serious off-road use. This 4-inch Uniball UCA System is a prime example, offering a mild lift height that's straightforward to install on your 2014-2018 Chevrolet Silverado 1500 or GMC Sierra 1500 equipped with factory aluminum upper control arms. It provides the clearance needed for up to 33-inch tall tires, giving your truck a more aggressive stance and improved capability.

At the heart of this system are the high-quality tubular Uniball upper control arms. Constructed from .120-inch wall 4130 Chromoly tubing with a 1.50-inch outer diameter, these arms replace the stock upper ball joints with strong 1-inch FK Stainless PTFE Uniballs. This setup allows for unrestricted movement throughout the suspension's travel range, which is crucial for aggressive off-road driving in harsh conditions. The system also includes front Dirt Logic 2.5 Coilovers, which are built for superior damping, handling both aggressive off-road terrain and providing a comfortable highway ride. To maintain proper CV angles with the increased lift, the front differential is relocated, and a 1/4-inch thick steel skid plate is included to protect it from off-road obstacles. The rear of the truck is leveled using a 1.5-inch lift block and U-bolts, paired with Dirt Logic 2.25 rear shock absorbers for enhanced damping.

This system is designed to be a direct replacement for your factory arms on suspensions requiring additional strength and better alignment capabilities. The arms are built with additional caster to help with alignment issues often found with leveling kits, and they allow for increased wheel travel when used with the Dirt Logic 2.5 coilovers. The Chromoly tubing helps reduce flex compared to stock arms, contributing to a more positive road feel. Importantly, the 4340 heat-treated uniball pin fits into the factory ball joint taper without modification, making it possible to return your suspension to stock if needed.