Athena Cylinder Kit 54mm 14.8:1 For Yamaha Yz125 2001-2004 Offroad

Constructed with quality materials, the ATHENA cylinder kit ensures consistent heat dissipation and longevity, making it suitable for aggressive riding styles. The 54mm bore size and 14.8:1 compression ratio are optimized for improved throttle response and power output, helping riders achieve better acceleration and top-end performance.