DSS Subaru 2004-2007 WRX STi 6-Speed (R180 Rear) 1-Piece Aluminum Driveshaft SUSH2

In this kit, you get the Driveshaft Shop 1-piece aluminum driveshaft specifically made for your 2004-2007 Subaru Impreza WRX STi with the R180 rear differential and a 6-speed transmission. This is a direct replacement for your factory two-piece driveshaft, offering a more robust and lighter-weight solution.

The factory driveshaft on these cars is often a two-piece design, which can introduce vibrations and flex, especially as it ages or if the vehicle is used for performance driving. This one-piece aluminum shaft from Driveshaft Shop is well-built to handle the power and torque of the WRX STi. Aluminum is chosen here because it's significantly lighter than the stock steel shaft, which helps reduce rotational mass. Less rotational mass means the engine doesn't have to work as hard to spin it up, potentially leading to a slightly improved throttle response. The solid construction also eliminates the carrier bearing that's part of the stock two-piece setup, which is a common failure point and a source of driveline vibrations.

When installing this, you'll want to ensure you have the correct tools to handle driveline components. It's a good idea to consult the manufacturer's installation instructions for specific details. This driveshaft is designed to fit right into the factory mounting locations, making the swap straightforward for someone familiar with working on driveline components.