The 1-piece aluminum driveshaft for the AP1 eliminates the factory CV at each end and utilize much stronger u-joint ends and flanges. Includes precision machined billet plates to mount to the factory driveshaft flanges and necessary hardware. The aluminum driveshaft with adapters is about the same weight as stock, but it is designed to handle much more HP, and is more torsional under load to absorb drivetrain shock. Ready to install with no modifications necessary.