Drivetrain Mount Insert, 80A Durometer

Factory rubber mounts for the rear differential can flex and twist under load, absorbing energy and dulling feedback. These inserts reinforce those mounts with 80A durometer urethane, a high-performance material, to minimize unwanted movement and ensure more direct power transfer to the wheels. Installation involves slipping the inserts over the OEM rubber mounts and securing them with provided spacers, creating a unified assembly. This process requires basic tools and is estimated to take approximately 20 minutes, with no cutting, drilling, or permanent modifications necessary. The urethane material is chosen for its resistance to heat, oil, and environmental degradation, ensuring long-term performance. Upgrading with these bushing inserts is expected to result in crisper throttle response, improved rear-end stability during cornering, and sharper gear changes. While a slight increase in Noise, Vibration, and Harshness (NVH) is possible, it is often considered a worthwhile trade-off for the enhanced drivetrain feedback and improved durability. Included components consist of front rear differential inserts (2), rear rear differential inserts (2), and bushing washers (2). This product is specifically designed for the Subaru WRX models from 2008 onwards and STI models from 2008 to 2021.