Athena P400485100030 144cc Big Bore Cylinder Kit with Cylinder Head (58mm Bore) - Premium 2-Stroke Performance Upgrade, Compatible with Yamaha YZ125 2005-2021 Warn VR EVO The bright vials are clear

The bright vials are clear and simple to read for fast and accurate results

Trusted by professional motocross and enduro riders worldwide

vehicle-specific fit on the Honda CRF250R (2010 model) and CRF450R (2009–2010 models)

it has a tread depth of 7/32" and weighs 28

Athena P400485100030 144cc Big Bore Cylinder Kit with Cylinder Head (58mm Bore) - Premium 2-Stroke Performance Upgrade, Compatible with Yamaha YZ125 2005-2021 Warn VR EVO The bright vials are clearUPGRADE YOUR DIRT BIKE TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low end torque, and unmatched acceleration from your modern aluminum frame 125cc two stroke racing engine with the Athena Big Bore Cylinder Kit (Part No. P400485100030), a premium race proven package engineered in Italy to seamlessly convert your factory setup into a high revving, high output 144cc powerhouse. Entirely cast from high grade aluminum and treated