
WHEN YOU USE THIS ATHENA 47.6mm BIG BORE KIT YOU WILL INCREASE YOUR TOTAL DISPLACEMENT TO 70CC! YOU MAY NEED TO MODIFY YOUR ENGINE CASE TO. ALUMINUM CONSTRUCTION WITH NICKEL CARBIDE PLATED BORE.
CYLINDER SLEEVE OUTER DIAMETER: 50.65mm. COMPRESSION HEIGHT FROM CENTER OF WRIST PIN HOLE. TO TOP EDGE OF PISTON: 26MM. ALL PARTS ARE INSPECTED BEFORE THEY LEAVE AND ARE NEW AND IN EXCELLENT CONDITION. THIS PART SHOULD BE INSTALLED BY. THANKS FOR YOUR INTEREST IN OUR PRODUCTS.