Wiseco PK1954 4 Stroke Forged Piston Kit 96mm Bore / 13.5:1 CR

The Wiseco PK1954 is a 4 Stroke Forged Series Piston Kit engineered specifically for the Kawasaki KX450. Built around a 96.00 mm bore and 13.5:1 compression ratio, this kit delivers the tight tolerances and high-performance characteristics demanded by serious dirt bike riders. Each piston is engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH, and designed from a dedicated forging tailored to this exact engine application. The kit includes high-quality piston rings, wrist pin(s), and circlips — everything needed for a complete piston installation.

Key Features:

• Engineered, forged, and machined in the USA in Mentor, OH
• Dedicated forging designed specifically for the Kawasaki KX450 4-stroke engine
• Improved tensile strength of forged material optimizes durability and service life
• Optimized strength-to-weight ratio for enhanced performance
• Includes high-quality piston rings, wrist pin(s), and circlips
• 96.00 mm bore — 13.5:1 compression ratio
• Part of the 4 Stroke Forged Series (forging number 40319M)

Wiseco has built a decades-long reputation at the forefront of powersports performance, and these forged 4-stroke pistons reflect that heritage. Built to the tightest tolerances for the ultimate combination of power and reliability, the PK1954 is proven at every level of riding. Fits select 2024–2025 Kawasaki models.