Athena P400485100008 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Forged Piston & Gaskets, Compatible with Yamaha YZ125 2001-2004 bin 500 BPM to get a

500 BPM to get a majority of applications done

this filter ensures your bike thrives in the most demanding conditions

muddy trails

Perfectly compatible with Yamaha YZ/YZ-F models (2009–2025)

Featuring a 3-finger design for enhanced control

Athena P400485100008 Standard Bore Cylinder Kit (54mm, 125cc) - Premium 2-Stroke Top End Rebuild Kit with Forged Piston & Gaskets, Compatible with Yamaha YZ125 2001-2004 bin 500 BPM to get aRESTORE 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. P400485100008), 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