The RideTech Level 3 CoilOver package includes everything you need to completely upgrade your existing suspension. The package contains front upper and lower control arms, redesigned upper control arm / CoilOver mount, lowering spindles, tie rod adjusters, front and rear MUSCLEbar, rear StrongArm system, and 4 triple adjustable coil-overs. The benefit of buying a complete suspension system is that it takes out all of the guesswork when purchasing a new suspension. RideTech has spent numerous hours collecting data to find a perfect spring rate and components for your vehicle's performance and ride quality. Spindles designed for the "HD" 1.25" brake rotor package.