FITMENT: This kit is designed specifically for Subaru WRX models from 2008 to 2025 with manual transmission only. Whiteline’s Transmission Member Bushings swap out the factory's soft rubber bushings for more durable urethane ones. This significantly reduces the flex in the transmission support. The bushings are placed in the lateral and horizontal parts of the transmission, getting rid of the flex allowed by the original soft rubber units. You can expect better shifting and improved throttle response. These mounts are made of stiffer material than the stock ones, similar to STI 'Group - N' mounts. They reduce engine movement during acceleration, hard cornering, and high - revving. You'll feel the engine better through the shifter lever and get more power transferred through the drivetrain. The kit is constructed like OEM units but uses much stiffer and higher - quality rubber. Kit Includes: Whiteline Positive Shift Kit and Subaru OEM Group N Transmission Bushing. Please Note: This kit does not fit automatic transmissions.
Using this transmission stiffening kit is easy. First, make sure your Subaru WRX is from 2008 to 2025 and has a manual transmission. Remove the factory's soft rubber bushings in the lateral and horizontal support of the transmission. Then, install the Whiteline urethane bushings provided in the kit. When it comes to the mounts, replace the stock ones with the stiffer ones included. After installation, you'll notice better shifting and throttle response. As for maintenance, check the bushings and mounts regularly for any signs of wear. If you see cracks or excessive wear, it's time to replace them. Also, keep in mind that this kit is only for manual transmissions, so don't try to use it on an automatic one.
