WSM Piston Kit - Kawasaki 300 - Standard 50-255K

Factory pistons wear out—and when they do, your engine loses compression, power, and reliability. The WSM Piston Kit for Kawasaki 300 delivers OEM-equivalent construction with critical performance upgrades that reduce heat, lower friction, and extend service life. Whether you're rebuilding after high-mileage wear or upgrading before the next season, this kit restores your engine to peak performance.

Each kit contains everything needed for a single cylinder, featuring an improved E-clip design and MOS2-coated skirts that actively draw heat away from the piston crown—a thermal management advantage that translates to measurable gains in power and durability. The specially hardened ring grooves resist deformation under load, ensuring consistent ring seal and compression over thousands of miles.

• Meets/exceeds OEM specifications
• Improved E-clip design
• MOS2 friction-reducing coating
• Enhanced heat dissipation
• Hardened ring groove tops
• Includes piston, rings, pin, clips
• Additional rings available separately
• Order one kit per cylinder
• MPN: 50255K
• Bolt-on replacement (standard installation)