Engine

All valve seals are made of 100% solid Viton« for long life Meet or exceed OEM specifications When using Kibblewhite spring kits, Kibblewhite valve seals must be used because of spring clearances Made in the U.S.A.. VALVE SEAL KIT CRF250R

Seals sold each, in 25 packs and 100 packs Stem diameter 5/16"; guide o.d. .420" Seal driver and sleeves sold separately Made in the U.S.A.. SEAL VLV GD KX250F 4/PK

Machined from solid proprietary bronze alloy bar stock with an exceptional Rockwell hardness rating Made in the U.S.A.. BUSHING WRIST PIN TRI

All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance Made in the U.S.A.. GUIDE IN STD YZ250F 14-18

Precision-machined from C630 Compatible with no-lead fuel and accept any type of valve-stem material Provide maximum service with chromed valve stems Feature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance Made in the U.S.A.. GUIDE VLV STD 06-07KX450F

All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance Made in the U.S.A.. GUIDE IN STD 06-08TRX450R

Precision-machined guides Manganese bronze guide material is softer than nickel aluminum bronze valve guides Excellent heat conductivity which promotes long valve life Guides can be easily reamed with a battery-operated or electric drill and finished...

Precision-machined guides Manganese bronze guide material is softer than nickel aluminum bronze valve guides Excellent heat conductivity which promotes long valve life Guides can be easily reamed with a battery-operated or electric drill and finished...

Precision-machined guides Manganese bronze guide material is softer than nickel aluminum bronze valve guides Excellent heat conductivity which promotes long valve life Guides can be easily reamed with a battery-operated or electric drill and finished...

Precision-machined guides Manganese bronze guide material is softer than nickel aluminum bronze valve guides Excellent heat conductivity which promotes long valve life Guides can be easily reamed with a battery-operated or electric drill and finished...

Precision-machined guides Manganese bronze guide material is softer than nickel aluminum bronze valve guides Excellent heat conductivity which promotes long valve life Guides can be easily reamed with a battery-operated or electric drill and finished...