The CVD bearing drive shafts improve off-power steering and rotation, but decrease back traction and security. Suitable for use within high-traction conditions, as well as for tracks with numerous hairpin corners. Set includes complete drive shaft simply. May be used with optional #304972 - Gear Diff CVD BB Driveshaft Outdrives. The CVD BB drive shafts are suggested to work well with along with Gear Differential in back on a T4.