Description
Upgrade your Honda CRF450X with the KPMI Top End Service Kit (Part Number 30-32900), specifically designed to enhance performance and durability for racing applications. This comprehensive kit includes everything you need for a top-end rebuild, featuring high-quality components engineered for reliability and power. Whether you’re a competitive racer or an enthusiast seeking to optimize engine performance, this kit offers premium features to meet demanding riding conditions.
The kit’s pistons are crafted from 2618 alloy and fully CNC machined for precise fitment and optimal performance. They incorporate a domed piston deck to maintain high compression ratios, effectively offsetting volume changes caused by valve dishes. This design ensures consistent power output and efficiency across your engine’s rpm range. Additionally, the pistons include a performance skirt coating to reduce friction and wear, helping to extend engine life. The lightweight design of the pistons contributes to reduced moving mass, improving throttle response and high-revving capabilities.
One of the standout features of this kit is the Black Diamond* Stainless Steel Valve Conversion system, which significantly increases valve durability without sacrificing performance. The kit includes dual spring titanium retainers capable of supporting up to 0.440 inches of valve lift, making it ideal for high-performance cam setups. The stainless steel valves are built to double the lifespan of stock titanium valves, providing a reliable solution for aggressive riding and racing environments. Coupled with all necessary gaskets, rings, clips, and seals, this kit simplifies the rebuild process and ensures a perfect fit for your Honda CRF450X from 2005 through 2016.
Designed with the performance enthusiast in mind, this kit also features a lightweight racing spring kit compatible with high-performance cams, offering enhanced valve control. The included top-end gasket kit by Cometic ensures a proper seal, preventing leaks and maintaining optimal compression. The comprehensive nature of this upgrade kit makes it an excellent choice for those looking to boost engine longevity, power, and reliability in competitive or recreational riding scenarios.
Trust KPMI for quality and performance with components that are engineered to withstand the rigors of racing and high-performance riding. This top-end service kit is a vital upgrade for your Honda CRF450X, providing a balanced combination of power, durability, and ease of installation.
Features:* Designed specifically for the performance demands of popular racing MX Bikes and Quads* Pistons designed to maintain the stock compression after the effects of the dished stainless valves* 2618 alloy fully CNC machined piston with performance skirt coating* Black Diamond* stainless steel conversion system significantly increases valve durability* Lightweight racing spring kit compatible with high-performance cams* Includes all gaskets, rings, pins, and seals required for a top-end rebuild* Includes piston, rings, clips, and pin for complete assembly* Includes top-end gasket kit by Cometic for a proper seal* Includes KPMI? S.S. Black Diamond* valves with stock head diameter* Dual spring titanium retainer spring kit supporting up to 0.440 inches of valve lift


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