The TeraFlex Pro LCG Suspension System is designed for the aggressive off-road enthusiast that wants the best suspension performance for both rock crawling and high speed performance. The Pro LCG system uses the TJ traditional front five-link suspension configuration, but expands the performance. Our front upper arms are over 9” longer than stock arms, and rear suspension is a 4-link triangulation, eliminating the need for a rear trackbar. The rear upper bracketry features adjustable anti-squat tunability, to fine tune suspension. The Pro LCG system is designed as a complete kit with all necessary componentry including lower long FlexArms, front long upper FlexArms & bracketry, rear upper 4-link long FlexArms & bracketry, hardware and shocks. The 4" Pro LCG will allow you to run 35"; tires, and the 5" Pro LCG will accomodate 37"; tires. Fits TJ Wrangler models including Rubicon (does not fit Unlimited). Additional modifications are required including cutting and welding, and a transfer case slip-yoke eliminator kit.