- 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.
Honda -- TRX400EX Sportrax -- (2004, 2002, 2005, 2003, 2001); Honda -- XR400R -- (2000, 2002, 2003, 1999, 2001, 1996, 1997, 2004, 1998); Honda -- TRX400EX FourTrax -- (2000, 1999); Honda -- TRX400X -- (2009)