Wiseco VES009 Premium Stainless Steel Exhaust Valve Fits: Kawasaki KLX400 2003-2004; Suzuki DRZ400 2000-2007; Kawasaki KFX400 2000-2005; Suzuki LT-Z400 2003-2007 Wiseco's stainless steel valves are made from premium materials and manufactured to the highest quality specifications A one-piece, forged construction offers high strength and fatigue properties Chromium nitride coating offering surface hardness and wear resistance Each design is a drop-in application and requires no piston or head modifications and will work with stock springs and valve-train