The 1-piece carbon fiber driveshaft for the Subaru WRX STI is a complete 2.370in shaft that is approximately 1/2 the weight of the factory 2-piece driveshaft.
The 1-piece carbon shaft features larger, replaceable u-joints and can handle about 850WHP and 180 MPH. DSS has the tubing custom wound with a high modulus fiber to ensure the strength while making it small enough to clear everything under the car. All of the factory shields and covers can be used without any alteration. The ends are made from 6061-T6 aluminum and that shaft weighs a mere 12.2lbs.
By removing the factory 2-piece shaft and installing a single shaft, the car will feel more responsive due to the lighter weight of the shaft and also the fact that the hanger bearing is not moving up and down during acceleration.
- This driveshaft is rated to a top speed of 180MPH and is not recommended for use above this speed. The stock flange on the vehicle will need to be modified to accept the 10mm bolts. This allows the driveshaft to have its extremely high rating.