Cylinder Works Cylinder Head Kit Yamaha YZ125 05-21
OEM appearing cast aluminum replacement cylinder head with cam caps and cam cap bolts for ready-to-go installation. An unshrouded combustion chamber delivers better airflow with a blended bowl and competition valve job. Stock-shaped ports deliver higher performance. C630 nickel/aluminum valve seats and guides are easier on the valve to reduce wear. Shortened valve guides accept high lift cams for greater torque and enhanced power. Note: valves, springs, retainers and lifters are sold separately.
Product Features:

New cast aluminum replacement cylinder head.
Includes cam caps and cam cap bolts.
Unshrouded combustion chamber with a blended bowl and competition valve job.
Stock shaped ports.
C630 (nickel/aluminium/bronze) valve seats and guides that are easier on valves.
Shortened valve guides accept higher lift cams.
Valves, springs, retainers, lifters not included.