SPL Parts Rear Spherical Knuckle Bushing - 2015–2026 Subaru WRX / 2015–2021 Subaru STI / 2013–2016 Scion FR-S / 2017–2026 Toyota GR86 / 2013–2021 Subaru BRZ PDM_engine-covers With independent rebound

With independent rebound

The SF intake provides greater airflow improvement than a drop-in filter alone

Emissions Disclaimer: This product does not require a CARB EO#

748 SPS 1999-1998

Each air duct is finished with UV-resistant clear-coat paint for resistance against various environmental conditions

SPL Parts Rear Spherical Knuckle Bushing - 2015–2026 Subaru WRX / 2015–2021 Subaru STI / 2013–2016 Scion FR-S / 2017–2026 Toyota GR86 / 2013–2021 Subaru BRZ PDM_engine-covers With independent reboundThe 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