Athena P400485100017 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Forged Piston & Gaskets, Compatible with Yamaha YZ125 2005-2021 Tumbler making it the ultimate choice

making it the ultimate choice for off-road racing

damage due to debris

0 is engineered for a clean fit

providing optimized performance

Athena P400485100017 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Forged Piston & Gaskets, Compatible with Yamaha YZ125 2005-2021 Tumbler making it the ultimate choiceRESTORE YOUR DIRT BIKE TO PEAK OEM PERFORMANCE Bring back the crisp throttle response, razor sharp power delivery, and high revving factory reliability of your 125cc two stroke engine with the Athena Standard Bore Cylinder Kit (Part No. P400485100017), a premium OEM style replacement package engineered and manufactured in Italy. Entirely cast from high grade aluminum and treated with a specialized Motor Nicksil (Nickel Silicon) coating, this cylinder