This is a aftermarket top overhaul kit featuring 2 new pistons, moly coated for low friction, rings, pins, circlips , top end gasket. This set exceeds the MFGs specs , Designed to replace the oem elkos in all respects.
Smoother running due to better balance, stronger and better heat transfer. These are hard anodized crowned (keeps the heat up top)and is 40% stronger and feature moly coated skirts to reduce friction and heat.
This is set is for 76 mm std bore 583 rotax. any head color late style 96 - 98 snowmobile
