Designed to replace the OE Jeep TJ and JK front lower control arm bushing, the xAxis is recommended for recreational heavy use or off-road competition. The xAxis is packaged in the familiar JK/TJ dimensions but uses a larger through hole to accomodate 5/8" or 16mm bolt. SPC's xAxis Sealed Flex Joint reduces compliance, increases angularity, and improves durability vs rubber bushings and other aftermarket options. California Residents WARNING