Rebuilding your crank will require (2) SBT Part # 23-304-106 (1) SBT Part # 23-304-106A rod kit. SBT Part # 23-304-106 kit is a replacement connecting rod assembly; it comes with, the rod, big end pin, big end bearing 2 end play shims and a wristpin bearing. This kit is used on the magneto end and the center cylinder. SBT Part # 23-304-106A kit contains the same components as the RD 006 but has a longer big end pin to be used on the PTO end of the crank. SBT recommends rod side end play of .018 when assembling crank.