- 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 stems
- Spring sets contain springs and titanium upper collars; keepers and lower collars included as required
- Spring kits come complete for one motor
- Made in the U.S.A.
Yamaha -- YFM 660 FG Grizzly 4x4 -- (2008, 2007); Yamaha -- Raptor 660R 4x2 -- (2001, 2004, 2005, 2002, 2003); Yamaha -- YXR 660F Rhino 4x4 -- (2007); Yamaha -- YFM 660 F Grizzly 4x4 -- (2002, 2003, 2004); Honda -- CRF250RX -- (2020, 2021, 2019, 2022)