2022 yz125 เฟรมแก้ใหม่ ใส้ในเปลี่ยนใหม่หมดนะครับ Nearly every functional part of the engine is new-from the cylinder body, cylinder head, piston, piston pin, connecting rod, crankcase and expansion chamber, to a revised cylinder port shape and updated cylinder port timing. It's a change that is immediately apparent at the first crack of the throttle and throughout the entire rpm range. New Air Intake Design Updated intake design allows for a straighter, more efficient draw of air into the intake tract. Yamaha Power Valve System Patented YPVS™ combines crisp, hard-hitting bottom-end acceleration with strong mid-range and top-end. Close-Ratio Transmission Revised six-speed, close-ratio transmission has wider transmission gear tooth width and new, optimized gear ratios for maximum performance. Digital Ignition Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration. High-Capacity Radiator Large-capacity radiator features a 10-row core with blacked-out louvers to deliver an aggressive look and maximum cooling efficiency.