SPE 4R100 / 5R110W Standard Size Billet Input Shaft


  • Cold formed / rolled splines for superior strength & fatigue properties due to uniform material grain flow
  • Spherical runout radius at spline end transitions to reduce stress concentration
  • Proprietary heat treatment and ultra-high strength VAR alloy
  • Torsion tested in excess of 2400 ft-lbs without failure