PROX Steel Intake Valve and Spring Kit for Yamaha YZ and WR250F - Part 28.SIS2402-2

Replaces the OEM valves & valve springs

Steel, nitrided valves for increased durability and less wear under extreme conditions

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 at high rpm

Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals

Upgrade your Yamaha YZ or WR250F with the PROX Steel Intake Valve and Spring Kit, part number 28.SIS2402-2. Designed for precision and durability, this kit ensures optimal engine performance and longevity. The high-quality steel construction provides enhanced strength compared to standard components, making it ideal for demanding riding conditions and frequent engine rebuilds. The kit includes an intake valve and compatible springs, offering a reliable solution for maintaining proper valve timing and sealing.
This PROX kit is engineered to meet or exceed OEM specifications, ensuring seamless integration with your motorcycle’s existing engine components. The steel valve improves heat resistance and wear properties, which are critical for high-performance applications. The included springs are selected for consistent tension and reliable valve operation, reducing the risk of valve float and related engine issues. Installation is straightforward for mechanics familiar with Yamaha YZ and WR250F models.
Whether you're rebuilding your engine or upgrading for better durability, the PROX Steel Intake Valve and Spring Kit delivers precision and reliability. Trust in PROX's reputation for quality motorcycle parts to keep your Yamaha running smoothly and efficiently. Proper installation and regular maintenance will maximize the benefits of this high-performance kit, ensuring your motorcycle stays competitive and dependable over many riding seasons.

Features:

• High-strength steel construction for durability and heat resistance

• Includes intake valve and matching springs for reliable valve operation

• Designed specifically for Yamaha YZ and WR250F models

• OEM-quality fit and performance to ensure seamless installation

• Built to withstand demanding riding conditions and engine rebuilds