Rotax 277 2nd O/S piston n gasket kit for ultralight aircraft engine top end kit

This is a top overhaul kit for Rotax 277 UL featuring 1 new aftermarket coated, w/dual rings, pins, circlips, full gasket w/ crank seals kit as shown. This set exceeds the MFGs specs, Designed to replace the oem elkos in all respects. These are becoming hard to get, get while they last Smoother running due to better balance, stronger and better heat transfer. We run em in our trikes and use them in our shop for the past 9+ years This is set is for 72.50 mm 2nd oversize bore 277 Rotax