The 1-piece carbon shaft features larger, replaceable u-joints and can handle about 850WHP and 180 MPH. We had the tubing custom wound with a high modulus fiber to ensure the strength while making it small enough to clear everything under the car.

We had Stephan Verdier test the Sti shaft at the recent X-Games, this was his response:

"Quirt and Frank,
The driveshaft work perfectly. I like it much better than the aluminum. It has more clearance for the rear diff subframe and in the tunnel, overall a great improvement. I did multiple launch on tarmac when through jumps at full speed and the driveshaft took it no problem. Good product and a beautiful piece on top of it. I'll recommend that drive shaft to anybody planning on racing."

-Stephan Verdier
 

Product Description

The 1-piece driveshaft for the Subaru WRX Sti is a complete 2.75" Carbon Fiber 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. We had 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, plates and covers can be used without any alteration to the car at all. The ends are made from 6061-T6 aluminum and that shaft weighs a mere 12.2lbs. Not only will the car feel more responsive but it will also make a noticeable difference on the noise level in the car.

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. Available for most popular motor/trans combinations, if you don’t see yours listed, custom shafts are also available.

Please Note: This driveshaft is rated to 850WHP and a top speed of 180MPH and is not recommended for use above this speed.


ATTENTION 2003-2007 Subaru WRX and STI owners. We have had some warranty issues regarding damaged driveshafts (aluminum and carbon fiber). After some research on our part, we found a common denominator that the driveshafts were damaged 11-12 inches from the differential. The culprit it turns out is either subframe, differential, or transmission mounts/bushings failing and allowing movement of various drivetrain parts resulting in the driveshaft striking the rear brace. As this is not an issue with Driveshaft Shop parts but a maintenance/age issue, we will not be offering warranty for this issue any longer. Regardless if you have one of our driveshafts or not please be aware of this issue for the health of your vehicle and its parts.