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. Yamaha --...

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. Yamaha -- YFM 660 FG Grizzly...

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. Yamaha -- YXR 660F Rhino 4x4 --...

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. Yamaha -- YXR 660F Rhino 4x4 -- (2007); Yamaha -- Raptor 660R 4x2 --...

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...

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. Yamaha -- Raptor 350 SE 4x2 --...

Viton intake/exhaust sealsMade in the U.S.A. Yamaha -- SRT 1000 SR230 -- (2003, 2004, 2005, 2007); Yamaha -- YZF-R1 -- (2002, 2001, 2003, 1999, 2000, 1998); Yamaha -- FX Nytro -- (2013, 2008, 2009, 2010, 2014, 2011, 2012); Yamaha -- Apex -- (2005, 2007,...

Viton intake/exhaust sealsMade in the U.S.A. Kawasaki -- EX650 Ninja 650 -- (2012, 2015, 2016, 2014, 2013); Kawasaki -- KLE 650 Versys -- (2008, 2009, 2011, 2016, 2010, 2015, 2007, 2012, 2013, 2014); Kawasaki -- KX 250 F -- (2020, 2021, 2004, 2009, 2013,...

Replace single, OEM-style bushingMaintain bearing surface while the gap between each bushing provides a large cavity for oil to pool, aiding in lubrication of the shaft Cuyuna -- 650 -- (1972, 1969, 1968, 1965, 1963, 1971, 1964, 1970, 1967, 1966)

Features a cast or moly top ringReverse torsional taper face second ring and easy "spiral on" three-piece oil rings

Features a cast or moly top ringReverse torsional taper face second ring and easy "spiral on" three-piece oil rings

Features a cast or moly top ringReverse torsional taper face second ring and easy "spiral on" three-piece oil rings