Super Pro Rear Upper-Inner Control Arm Standard Bushing Kit Subaru WRX / STI / Forester XT / Legacy GT / BRZ / Scion FR-S vendor_Subaru Japan Different shapes of the knob

Different shapes of the knob are ergonomically correct depending on shifting style

rides like a rubber bushing at lower speeds and at higher speeds maintains stiffness for more firm cornering

Aspen rear differential

Subaru STI 2008-2017

Increase Horsepower and torque

Super Pro Rear Upper-Inner Control Arm Standard Bushing Kit Subaru WRX / STI / Forester XT / Legacy GT / BRZ / Scion FR-S vendor_Subaru Japan Different shapes of the knobPart #: SPF3100K SuperPro's non adjustable rear upper control arm bushing set is an ideal option for those with camber adjustment at the lower control arm. SuperPro's polyurethane composition bushings provides a lifetime of silent operation while more precisely locating the rear suspension through it's travel affording a more consistent contact patch and improved grip and traction. SuperPro Rear Upper Inner Control Arm Standard Bushing Kit fits 2008