Inlet/Exhaust Valve – 27/23mm – YX 125 140 149

Genuine YX engines part.

Will fit - YX125 (big valve head only), Lifan 125 (big valve head only), YX140, Lifan 140, Zongshen 140, YX149, Lifan 150

Typically fits engine codes - 1P53 & 1P56

Does not fit 125 1P53FMI e/start engines, instead use 23/20 valves.

Included with the kit
Pair of inlet/exhaust valves

Inlet valve
Valve diameter - 27mm
Valve length - 66mm
Stem diameter - 5mm

Exhaust valve
Valve diameter - 23mm
Valve length - 65mm
Stem diameter - 5mm

Please check the dimensions against your engine before ordering.

Note; Valve seats may require cutting and guides honing upon installation.