Description
The KPMI 80-81200 Top End Service Kit is specifically designed to enhance the performance and durability of Yamaha YZ250F and YZ250FX models from 2014 to 2016. This comprehensive kit combines high-quality components that ensure top-tier performance for competitive motocross riders and enthusiasts alike. Featuring a fully CNC-machined 2618 alloy piston with a performance skirt coating, this kit maintains the factory compression ratio even after modifications to the valve system, thanks to its innovative domed piston deck design that compensates for volume changes caused by the stainless steel valves.
The inclusion of Black Diamond* stainless steel valves significantly increases valve durability, offering up to double the lifespan of stock titanium valves without sacrificing performance. The lightweight stainless steel valves reduce moving mass in the valvetrain, enabling quicker response and improved high RPM stability. The kit also includes a dual spring titanium retainer spring kit, allowing for a valve lift of up to 0.440 inches, which is ideal for high-performance camshafts. All necessary gaskets, rings, pins, and seals are provided for a complete top end rebuild, making this an all-in-one solution for restoring or upgrading your engine*s top end.
Designed with performance and reliability in mind, this kit is compatible with high-performance camshafts and is suitable for racing applications. The included top end gasket kit from Cometic ensures a perfect seal during assembly, preventing leaks and ensuring consistent performance. Whether you’re rebuilding your engine or upgrading for racing, the KPMI 80-81200 kit provides everything needed to achieve maximum power output and long-lasting reliability on the track.
Features:* Designed specifically for the performance demands of Yamaha YZ250F and YZ250FX models from 2014 to 2016* Includes a fully CNC-machined 2618 alloy piston with performance skirt coating to maintain stock compression* Domed piston deck design compensates for volume changes caused by stainless steel valves* Black Diamond* stainless steel valves greatly increase valve durability, doubling lifespan over stock titanium valves* Lightweight stainless steel valves reduce valvetrain moving mass for quicker response and improved high RPM stability* Dual spring titanium retainer spring kit supports up to 0.440 inches of valve lift, ideal for high-performance cams* Complete top end rebuild kit includes gaskets, rings, pins, and seals for a full engine overhaul* Includes a top end gasket kit from Cometic for a secure, leak-free seal* Designed for racing and high-performance applications, ensuring maximum power and durability
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