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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...

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...

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. Honda -- CRF250R -- (2009, 2008)

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. Honda -- CRF250R -- (2009, 2008)

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. Honda -- CRF450X -- (2015,...

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. Honda --...

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. Honda -- TRX450ER -- (2007,...

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. Honda -- TRX450ER -- (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. Honda -- TRX450ER -- (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. Honda -- TRX450ER -- (2006,...

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...

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. Honda --...