Steel Valves and Spring Kits


  • An alternative where the O.E.M. application uses expensive and less durable titanium valves
  • These steel valves offer increased durability and easily extends the lifespan to 3x that of the O.E.M. titanium valves
  • Nitrided valves offer high micro-hardness while a super-smooth surface finish reduces friction between stem and guide
  • Special stronger valve springs deal with the extra weight of the steel valves
  • Springs are made from premium chrome vanadium steel for higher performance and durability under high RPM
  • Fully rebuildable with O.E.M. retainers, bases and seals without the need of any further engine modifications
  • Intake and exhaust kits complete packages for quick, easy and cost efficient replacement
2006KawasakiKX450F
2007KawasakiKX450F
2008KawasakiKX450F

This item will ship SAME business days (Monday-Friday) after payment has cleared. International shipping time can be up to 1-2 weeks for processing and customs.

Buyer pays fixed shipping costs. Delivery Time: Allow 2-4 business days for delivery of items in the continental United States. Allow 4-6 business days for shipments to Alaska, Hawaii and International Orders. We are not responsible for carrier or customs delays. All customs costs for international orders are the responsibility of the buyer.

You must notify us in advance of all returns for authorization. Returns must be postmarked within 30 days of original shipment date, and must be in original shipped condition, including all packaging. All shipping costs are the responsibility of the buyer except in the case where we have shipped you the wrong item. All returns may be subject to a restocking fee.

Our dealership has a rock-solid reputation of providing excellent service, support, and satisfaction. We pride ourselves on giving our customers the best service available, the best parts and accessories, and a staff that understands all aspects of our business.

How do we stay small and sell big? It's simple: years of experience. At Apex Racing, our mission is to offer you the latest in parts and products, at the best prices, and with unparalleled service. We pledge to use our best efforts to make your experience both beneficial and enjoyable. Once you give us a try, we're sure you'll be back for more!