Extreme Heavy Duty Left Side Main Bearing Kit(KIT)

Extreme duty left side main bearing kit is for all 2003UP Twin Cam and M8 models Includes bearing spacer thrust washers and snap ringbrbrWhen highperformance engine modifications are made the increased torque is transferred via the crankshaft to the drive system putting a significantly higher load on the bearing The extreme duty bearing is case hardened on the inner and outer race to provide increased load capacity and enhanced durability in hightorque applications Installed in the left side of the crank case and supports the output shaft to the primary drive system