Cylinder Head Assembly - 39mm - 50cc ATVs 108799 This sprocket has 41T and

This sprocket has 41T and is compatible with the 420 chain ONLY

7 in) diameter

Drive face center hole: 21 teeth

This filter fits many 50cc-110cc engines

Cylinder Head Assembly - 39mm - 50cc ATVs 108799 This sprocket has 41T andChinese ATV Cylinder Head Assembly 39mm 50cc Complete cylinder head assembly with valves and cam for 50cc 4 stroke horizontal engines. This head does not fit the GY6 50cc motors commonly found in scooters. Please look at pictures and description before ordering. Head description: Intake port diameter: 18mm (0. 72 in) Exhaust port diameter: 16mm (0. 615 in) Covers included as pictured Timing chain sprocket: 28 teeth Does not fit GY6 50cc scooters!