SPC Performance xAxis Bushing Upgrade Kit for 25470 & 25480Upgrade your older SPC arms to the latest design with this complete bushing retrofit kit. These xAxis joints feature free pivoting inner balls to maximize droop travel and are greased & booted to protect against contaminants. The bonded rubber outer shell is designed to maintain factory noise, vibration, and harshness (NVH) measurements. This kit includes four bushings, washers, and the press tool needed to install the new bushings in your arms. On a