Top End

Spring kits contain springs and titanium upper collars; lower collars included as required; spring kits are engineered for use with standard and oversized valvesSpring kits come complete for one motorKeepers are not includedMade in the U.S.A. Suzuki --...

Stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valvesExtends the life of the valvetrain and intake components by as much as 4x over the OEM titanium partsIncludes...

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 resistanceMade in the U.S.A. Suzuki -- RM-Z 450 -- (2005, 2006)

Black Diamond? valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond? proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A. Suzuki -- LT-R 450 QuadRacer --...

Black Diamond? valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond? valves feature one-piece construction and hard chrome stemsSpring sets contain...

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 resistanceKeepers are not includedMade in the U.S.A. Suzuki -- GSX-R 1000 -- (2002, 2001, 2004,...

Black Diamond? valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond? proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A. Suzuki -- GSX-R 1000 -- (2002,...

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 resistanceKeepers are not includedMade in the U.S.A. Suzuki -- LT-Z QuadSport 400 4x2 -- (2010,...

Black Diamond? valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond? valves feature one-piece construction and hard chrome stemsSpring sets contain...

Precision-machined from C630Compatible with no-lead fuel and accept any type of valve-stem materialProvide maximum service with chromed valve stemsFeature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

Stock portingSlightly modified port configuration increases horsepowerNo case modifications necessary Yamaha -- Banshee 350 4x2 -- (2003, 2002, 2004, 2000, 1999, 2005, 2001, 1990, 1997, 1998, 1988, 1996, 1987, 1992, 1993, 1995, 1994, 1991, 1989, 2006)

Stock portingSlightly modified port configuration increases horsepowerNo case modifications necessary Yamaha -- Banshee 350 4x2 -- (1989, 1994, 1991, 1988, 1996, 2004, 2000, 2005, 1999, 2001, 2003, 2002, 1987, 1992, 1993, 1995, 1998, 1990, 1997, 2006)