Cylinder Works Cylinder Head Kit (CH2001-K02) YAMAHA YFM450 GRIZZLY IRS helps prevent snowmobile from overheating

helps prevent snowmobile from overheating when riding on hardpack/icy trails

Lithium based Molybdenum Grease insures good lubrication for long CV joint life

when our heavy-duty auger rolls into something hard

A CAST ALUMINUM HOUSING with IP68 water-resistant rating

NGK 6669 BR9ECS-5 Nickel Spark Plug

Cylinder Works Cylinder Head Kit (CH2001-K02) YAMAHA YFM450 GRIZZLY IRS helps prevent snowmobile from overheatingCylinder Works Cylinder Head Kit New replacement cylinder head Include cam caps and cam cap bolts Include C630 (nickel aluminum bronze) valve seats and guides Competition valve job Shortened valve guides to accept higher lift cams Unshrouded combustion chamber Blended bowl seat to port Stock shaped ports Includes cylinder head, cam caps, & cam cap bolts. Does not include valves, springs or lifters Made in the U. S. A.