Attention Drag Racers, Mud Boggers and Extreme Off-Roaders. This One’s For YOU! Heavy Duty Input Shaft and Refurbished Forward Drum. The TCS Shaft is made from 300 Maraging steel. The spline area has been increased in size by 15% to provide greater drum/shaft contact and more strength. This is a 100% bolt-in assembly. This O.E. drumhas been refurbished to almost better than new condition.