Pit bike engine 150 YX-2, exaust stud 6mm

4 stroke 150cm3
KLX110 head type,
28 and 23mm valves (intake pipe folded 90 ° and exhaust stud 6mm diameter)
Camshaft very powerful (250 ° to 1mm)
Bore x Stroke 60 x 53mm
Power 18HP with Keihin PE28
Compression pressure : 10kg/cm ²
5-disc manual clutch
4 speed gearbox type N1234 (with 2012 3rd gear)
Silent timing chain tensioner (similar as Japanese engines)
Mini flywheel ignition
Provided with kick, gear shift and intake pipe (without carburetor)
 
Recomended CDI reference 2418 to reduce kick back
Using an oil cooler is not necessary but in any case the oil outlet should be connected to alloy the flow of engine oil.