Wiseco Exhaust Valve Components from IPD Racing — 6 part numbers in stock and shipping from our Texas warehouse. Popular fitments here include 2007 Suzuki RM-Z450 Steel Valve Kit, KTM 250SX-F/EXC-F Steel Valve Kit, 13-15 KTM 350SX-F Steel Valve Kit. Wiseco has forged its own pistons in Mentor, Ohio since 1941, and every part in this category is built for engines that get used hard, not babied. Steel valve kits for four-stroke heads that have gone soft on compression. Wiseco's steel valves handle the heat of an exhaust port better than titanium in a trail or play-riding engine, and they cost a fraction of a new head. Need help confirming fitment for your machine? Call or email IPD Racing before you order — we would rather answer a question than process a return.