JE PISTONS Piston Kit - 13.5:1 - Kawasaki 379938

If you're running your Kawasaki engine at the edge of competition, your stock pistons won't survive—you need forged internals engineered for extreme duty. JE's 13.5:1 compression pistons deliver the strength and precision required for professional racing applications, with internal bracing and weight-optimized geometry that separates podium finishers from the rest. This is a complete kit with pins, rings, and locks—everything you need for a successful build.

• 2618-T6 forged aluminum
• 13.5:1 compression ratio
• Internal and external bracing
• Internal milling reinforcement
• Dedicated accumulator groove
• Forged side relief
• Smooth dome radii
• No deburring required
• Weight-optimized design
• Includes pins and rings
• Complete pin fitment kit
• Kawasaki-specific fitment
• Made in U.S.A.
• Professional competition-grade
• MPN: 379938