Naraku 60cc Big Bore Cylinder Kit for 50cc 4-Stroke Yamaha ScootersCOMPATIBILITY: Genuine – Venture 50 4TMBK – Booster 50 4T, Nitro 50 4T, Ovetto 50 4TYamaha – Aerox 50 4T, C3 Giggle 50 4T, Neos 50 4T, Vino 50 4T, Zuma 50F 4TNaraku Big Bore cylinder kit with 60cc displacement for scooters with 50cc Minarelli 4 stroke engine. The 42mm cylinder provides a noticeably better passage compared to the 38mm original cylinder. The Naraku cylinder is used with the original 38mm cylinder head. An adjustment of the crankcase is not necessary.The scope of supply includes: Cylinders, pistons, piston rings including oil wiping rings, piston pins, sealing set and securing clips for the piston pin.**NOTE: DELIVERY MAY TAKE 2-3 WEEKS****