Wiseco SK1229 Pro-Lite 2-Stroke Piston Kit 77.50mm Bore Ski-Doo 583

The Wiseco SK1229 is a Pro-Lite forged 2-stroke piston kit designed for Ski-Doo 583cc twin-cylinder snowmobile engines. Featuring a 77.50mm actual bore (1.50mm oversize over the standard 76.00mm bore) with a 64.00mm stroke, this kit delivers the performance and reliability demanded by serious snowmobile riders and racers alike.

Kit Includes:

• Forged Pro-Lite piston(s) — CNC machined for optimal cam shape and profile
• Piston ring set
• Wrist pin(s)
• Circlips
• Top-end gasket set

Pro-Lite Piston Features:

• Engineered, forged, and machined in the USA in Mentor, OH
• Dedicated forging design optimizes the strength-to-weight ratio for enhanced throttle response
• Improved tensile strength of forged aluminum material for superior service life over cast alternatives
• Extra lightening operations for reduced reciprocating mass and improved throttle response
• Designed for cast iron bore cylinders

Specifications:

• Engine Type: 583
• Displacement: 604cc
• Bore — Standard: 76.00mm
• Bore — Actual: 77.50mm
• Bore — Oversize: +1.50mm
• Stroke: 64.00mm
• Cylinders: 2
• Bore Type: Cast Iron

Wiseco has been forging performance pistons since 1941, and the Pro-Lite line represents their core 2-stroke offering — delivering reliable performance from the trail to the race track. All Wiseco pistons are engineered, forged, and machined at their facility in Mentor, Ohio.