Engine

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...

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...