Kibblewhite Precision 80-82070 Cylinder Head Service Kit

Max valve lift (intake/ exhaust) .450in., installed height 1.185in., seat pressure 46 lb., open pressure 155 lb.
4 titanium retainers, 4 valve springs, 4 steel base washers, White Diamond intake/ exhaust valves (2 each), 4 C630 valve guides, top end gasket kit.

Everything needed to completely refresh/ upgrade the cylinder head. Include lightweight racing valve spring kits with steel or titanium valve spring retainers, beehive or dual valve springs, steel base washers and Viton valve stem seals. Black Diamond or White Diamond stainless steel valves for increased longevity (valves are standard size). C630 bronze valve guides (standard size). Top end gasket kit including base gaskets, engine case gaskets, exhaust gaskets, head gaskets and necessary O-rings and washers (as needed per application).

Vehicle Fitment:

2016-2021 Yamaha WR450F
2014-2019 Yamaha YZ450F
2016-2020 Yamaha YZ450FX