Wiseco Pistons PK1128 Pro-Lite Top End Piston Kit Standard Bore - 2-Stroke 66.4mm

The Wiseco PK1128 is a complete Pro-Lite top end rebuild kit engineered for 2-stroke performance. Featuring a standard bore of 66.40mm (614M), this all-inclusive kit provides everything needed to perform a thorough top end rebuild in one purchase. The forged piston is CNC machined to an optimal cam shape and profile for peak horsepower output and maximum service life.

Wiseco is unique among aftermarket piston manufacturers in that all pistons are produced exclusively using the forging process. Starting with aerospace-grade aluminum alloy, the forging process compresses the material's molecules, increasing density and aligning grain flow for superior strength, impact resistance, and fatigue resistance compared to cast alternatives.

Kit Contents:

• Forged Pro-Lite piston (614M06640) — 66.40mm standard bore
• High-performance ring set for extended life and sustained power
• Highest quality alloy wrist pin — precision true and durable
• Circlip set
• Premium top end needle bearing
• Wiseco top end gasket kit (W5319) — premium materials exceeding OEM sealing standards

Key Features:

• Dedicated forging for a superior strength-to-weight ratio
• Aerospace alloy construction for reduced weight and improved heat transfer
• CNC machined for optimal cam shape, profile, and consistent tolerances
• Race-proven designs trusted by top teams in Supercross, Motocross, and GNCC competition
• Precision machined wrist pin for reduced friction and long-term durability
• All Wiseco pistons are forged and finished in the USA

Cross-reference part numbers: 614M06640, 2614CD. UPC: 193564150783.