
The Cylinder Works Standard Bore Cylinder Kit is designed for 05-21 YZ 125/20-22 YZ 125 X. It provides an application-specific replacement top-end package that restores the engine to its standard bore and stock-style configuration.
Compression RatioSTD
Cylinder Diameter54 mm
Cylinder Kit TypeStandard Bore
Displacement125 cc
Engine Type2-Cycle