2014+ CRF125F 143cc Big Bore Kit Piston Compression Ratio:11:1 Compression Ratio (Pump Gas) 5mm larger inside diameter manifold

5mm larger inside diameter manifold spacer

With a breathable mesh back and snapback fit

this beanie’s got your dome dialed

and go ride ‘til the sun sets

Clamp Area : 170mm

2014+ CRF125F 143cc Big Bore Kit Piston Compression Ratio:11:1 Compression Ratio (Pump Gas) 5mm larger inside diameter manifoldWe worked with the best brands to create a true 143cc Big Bore Kit ! Kit Includes: OEM Quality 143cc Cylinder Wiseco Forged Piston w hardened annodizing and teflon coated skirts Wrist pin and clips Piston Rings NGK Spark Plug Cometic Gasket Kit Options 11: 1 Compression ratio piston (91 Octane Pump) 13: 1 Compression ratio piston (104 Octane+ Race Gas) *Tuning Required