Wiseco CK226 Forged Piston Kit 67mm 13.8:1 CR 4-Stroke Top End

The Wiseco CK226 is a complete 4-stroke forged piston kit designed for the Kawasaki ZX600 Ninja ZX-6R. Built to a 67.00mm bore and a high-compression 13.8:1 compression ratio, this kit delivers 599.4cc displacement and is engineered for riders demanding more performance and durability from their engine.

Wiseco's dedicated aerospace aluminum alloy forgings provide a superior strength-to-weight ratio compared to standard cast pistons. The dome geometry is optimized for improved flame travel, while the detailed skirt shape and profile promote stability and smooth operation within the cylinder bore. Each piston is engineered with the correct installed clearance to maximize power output, minimize wear, and maintain an optimal ring seal at operating temperature.

Kit Contents:

• 4 forged pistons (one per cylinder)
• Piston ring sets
• Wrist pins (piston pins)
• Retainer clips (circlips)
• Head gasket

Key Specifications:

• Bore Size: 67.00mm (Standard / Stock Bore)
• Compression Ratio: 13.8:1
• Displacement: 599.4cc
• Engine Type: 4-Stroke
• Skirt Coating: Moly Coated
• Material: Aerospace aluminum alloy forging

Wiseco pistons are engineered, forged, and machined in the USA in Mentor, OH, backed by decades of championship-proven motorsport development. The forged construction offers greater tensile strength and fatigue resistance than cast alternatives, making the CK226 ideal for high-performance street and track applications.