Wiseco 2358M06600 Pro-Lite Piston Kit Bore Oversize - 2-Stroke 66mm 1.00mm

The Wiseco 2358M06600 is a Pro-Lite forged 2-stroke piston kit designed for the Polaris 600 Fuji-powered piston port engine. This 1.00mm oversize kit bores out to a 66.00mm actual bore diameter (65.00mm standard bore) with a 60.00mm stroke, serving the 616cc three-cylinder engine configuration. Designed for cast iron bore cylinders, this is a direct-fit replacement for riders looking to restore or refresh their top end with a proven performance upgrade.

Pro-Lite Forged Construction:

• Aerospace-grade aluminum alloy forging for superior strength and reduced weight
• Dedicated forging geometry optimizes the strength-to-weight ratio for 2-stroke performance demands
• Optimized piston skirt profile promotes uniform bearing surface and even thrust load distribution, helping prevent piston collapse
• Engineered for maximum combustion chamber heat transfer to cylinder walls for improved thermal management
• Extra lightening operations reduce reciprocating mass for enhanced throttle response
• CNC-machined to precise tolerances for optimal cam shape and ring seal

High-Performance Ring Set & Components:

• Includes high-performance ring set (Wiseco P/N 2598CD — 66.00mm ring set)
• Includes 16mm wrist pin (Wiseco P/N S255 — 16mm x 1.9685", unchromed, 2 & 4 cylinder style)
• Includes round wire pin locks / circlips (Wiseco P/N CW16 — 16mm pair)

Kit Specifications:

• Bore — Standard: 65.00mm
• Bore — Oversize: 1.00mm
• Bore — Actual: 66.00mm
• Stroke: 60.00mm
• Displacement: 616cc (3 cylinders)
• Engine Type: Fuji — Piston Port, Cast Iron Bore
• Piston Series: Pro-Lite
• Wrist Pin Diameter: 16mm

What's Included: Each kit covers a single cylinder and includes 1 piston, 1 ring set, 1 wrist pin, and 2 circlips. Top-end bearings, gaskets, and cylinder sleeves are not included. Note: oversize pistons require cylinder bore work to achieve the specified 66.00mm bore diameter.