Upgrade your 06-09 Cadillac STS-V with FullTorqueDriveshaft's premium one-piece aluminum driveshaft. Our driveshaft features the best components available: forged 1350 series solid-cross u-joints, direct-fit billet aluminum flanges, and a SONNAX yokeshaft/sleeve unit. All of our driveshafts are high-speed balanced to ensure a smooth ride on and off the track. 
 
Our one-piece aluminum STS-V shaft will eliminate the carrier bearing, flex disk, and CV joint from the driveshaft. This gives you the most direct power transfer and unbeatable strength. The one-piece shaft is the best option for performance and racing durability. 
 
This driveshaft comes with all new mounting hardware front and rear. 
Generally speaking there are no modifications required to make clearance for the 3.5" tube, however we always recommend that you carefully look for anything that will interfere/rub on the driveshaft. Any damage to the shaft from improper clearance is your sole responsibility.