Hays 70-104, Throwout Bearing, 1.375 in Shaft Diameter, EachHays high performance throwout bearings have been developed to withstand the high spring pressure and high RPM operation common to racing clutches. Each bearing face is heat treated and blanchard ground to ensure trueness. The collars are heat treated for strength and machined to close tolerances for secure bearing fork attachment. The ball bearing race is packed with heat resistant moly based grease for better lubrication and longer life. A nylon