Kibblewhite Precision 30-33330 Cylinder Head Service Kit

Intake: max valve lift .440in., 1.340in. installed height, seat pressure 50 lb., open pressure 162 lb.;.
Exhaust: max valve lift .405in., 1.360in. installed height, seat pressure 90 lb., open pressure 220 lb.
4 titanium retainers, 2 intake valve springs, 2 progressively wound exhaust springs, 4 steel base washers, 2 Black Diamond intake valves, 2 White Diamond Inconel valves, 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:

2017-2021 Honda CRF450R
2019-2021 Honda CRF450RWE
2017-2021 Honda CRF450RX