The CVD bearing drive shafts improve off-power steering and rotation, but decrease rear traction and security. Recommended for use in high-traction conditions, as well as for songs with many hairpin corners. Set includes complete drive shaft only. Is employed with optional #304972 - Gear Diff CVD BB Driveshaft Outdrives. The CVD BB drive shafts are suggested to utilize in combination with Gear Differential in back on a T4.