Wiseco Pistons PK1803 Pro-Lite Top End Piston Kit Standard Bore - 2-Stroke 56mm

The Wiseco PK1803 Pro-Lite Top End Piston Kit is a complete 2-stroke top end rebuild kit featuring a 56mm standard bore forged piston. Engineered for competitive and recreational powersports use, this kit delivers everything needed to rebuild your top end in a single package — no hunting down individual components.

Kit Includes:

• Pro-Lite forged aluminum piston (56mm standard bore)
• Piston ring(s)
• Wrist pin (floating style)
• Circlips (wrist pin retainers)
• Top end gasket set

Key Features:

• Forged aluminum construction — stronger and lighter than cast alternatives, utilizing aerospace-grade alloy for a superior strength-to-weight ratio
• CNC-machined Pro-Lite profile — optimized cam shape and piston profile for maximum horsepower, throttle response, and service life
• Dedicated forgings — purpose-built for this specific application, not a universal fit adapted from another platform
• Designed for ceramic composite coated cylinder bores
• Floating wrist pin design with included retaining circlips for precise, reliable piston-to-rod connection
• Manufactured in the USA

Wiseco Pro-Lite piston kits are proven at every level of competition, from Supercross and Motocross to GNCC racing. With over 80 years of forged piston manufacturing experience, Wiseco delivers the performance and durability demanded by both serious racers and weekend riders. Piston part number cross-reference: 629M05600.