Valve Set With Springs and Clips - GY6 50cc Scooter with 64mm Long Valves - Version 1 134638 5 piston rings - 2

5 piston rings - 2 pin clips

Chain Pitch (distance from pin to pin):  15

Recoil reel or starter drive pulley diameter: 13

Overall width: 22

19 splines on shaft opening

Valve Set With Springs and Clips - GY6 50cc Scooter with 64mm Long Valves - Version 1 134638 5 piston rings - 2Engine Valve Set With Springs and Clips for 50cc with 64mm Long Valves Version 1 This valve set fits the 50cc Chinese scooter engines. They are known to fit several brands and models. Please use our detail pictures and specs to make sure these are the correct valves for your scooter. Valve set details: Diameter of both valve stems: 5mm (0. 196 in) Valve Overall length: 64mm (2. 52 in) Valve Intake: 18. 5mm (0. 73 in) Valve Exhaust: 16mm (0. 625 in)