SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle BushingThe SPL rear knuckle bushings replace the rubber factory knuckle bushing with a low friction PTFE lined spherical bearing. Replacing the OEM rubber bushing eliminates deflection under heavy acceleration and braking loads that leads to unwanted geometry changes, and prevents binding by allowing the knuckle to smoothly articulate. The reduced deflection also translates to improved driver feedback from the tire and better overall response. We use the