Inlet Valve:28mm
Exhaust Valve:23mm
23mm 28mm Inlet Exhaust Valves For YX 150cc 160cc Pit Dirt Bike.
It's The Genuine Parts From YX Factory,Fits YX 150cc (150-2) 1P60FMJ,YX 160cc 1P60FMK,And Electric Start WD150 Engine.
These Engines Are Widely Used On Many Chinese Pit Dirt Bikes Including Stomp Demon X, WPB, Orion, M2R, Lucky MX, Thumpstar, Explorer, Braaap, Atomic, Pitpro, Pitster Pro, DHZ, SSR, Piranha And Many More.