Subaru Type RA Bushing Kit - Rear - COBB - Pinion Crossmember Mount - 2018. This COBB kit firms up the rear differential pinion crossmember mount to reduce unwanted movement and sharpen driveline response.

Designed for the 2018 WRX STI Type RA and compatible with 2008–2021 Subaru WRX & STI and 2009–2018 Forester XT (FXT), these bushings replace the soft factory units at the rear diff pinion crossmember. By limiting deflection, they help deliver more direct power transfer, cleaner shifts, and more consistent launches. Expect improved stability during acceleration and cornering; a modest increase in NVH may be noticeable depending on vehicle setup.

Features

• Fitment: 2018 WRX STI Type RA; 2008–2021 WRX & STI; 2009–2018 Forester XT (FXT)
• Targets rear diff pinion crossmember mount location
• Reduces bushing compliance and driveline slop
• Improves traction and throttle-on/off transitions
• Engineered by COBB for precise fit on listed models

Have questions or need guidance on your build? Call us—our team is happy to help. We offer installation and customization services at our Austin, Texas and Los Angeles, California area locations. Texas: 512-982-9393 (TX) | California: 562-981-6800 (CA). Thinking about purchasing multiple items? Contact us for potential shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov