Athena P400485100101 144cc Big Bore Cylinder Kit with Cylinder Head (58mm Bore) - Premium 2-Stroke Performance Upgrade, Compatible with Yamaha YZ125 2022-2026 Goggles it wirelessly connects to compatible

it wirelessly connects to compatible dust extractors

Includes three 72 tooth count ratchets which allow for a 5 degree arc swing for maneuverability in restricted areas

Up to 35 ft-lbs

Protect your Yamaha YZ125/250 (2006-2025)

allowing you to adjust airflow on the fly for delicate areas or high-intensity cleanup

Athena P400485100101 144cc Big Bore Cylinder Kit with Cylinder Head (58mm Bore) - Premium 2-Stroke Performance Upgrade, Compatible with Yamaha YZ125 2022-2026 Goggles it wirelessly connects to compatibleUPGRADE YOUR DIRT BIKE TO THE NEXT LEVEL OF PERFORMANCE Extract massive power, aggressive low end torque, and unmatched acceleration from your modern generation 125cc two stroke racing engine with the Athena Big Bore Cylinder Kit (Part No. P400485100101), 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 with a