piston 50cc 39mm for Honda MB50, MT50, MTX50, NSR 50
39mm 12mm Cylinder Piston Ring Bearing Gasket Kit For Morini 50 50cc S6e Mini Moto Dirt Bike Cross - Engines & Engine Parts - AliExpress
Parts of Motorcycle Piston Spare Parts for Cubs and Moped 50cc 70cc 90cc 100cc 110cc - China Motorcycle Parts, Motorcycle Cylinder Kit | Made-in-China.com