Wiseco 2433M07900 Pro-Lite Piston Kit Bore Oversize - 2-Stroke 79.00mm 1.00mm

The Wiseco 2433M07900 Pro-Lite Piston Kit is a high-performance forged 2-stroke piston kit engineered for snowmobile engines requiring a 79.00mm bore at 1.00mm oversize. Built from 4032 high-silicon aluminum alloy, this piston delivers exceptional strength, heat resistance, and long service life in demanding trail and racing conditions.

Wiseco forges all of their own pistons in-house in the USA, allowing complete control over every stage of manufacturing — from raw bar stock to finished skirt coating. Each Pro-Lite piston features an ArmorGlide skirt coating that minimizes cylinder wall friction and improves scuff resistance. The innovative piston skirt profile is computer-engineered for optimal cam shape, while anti-detonation grooves and ring land geometry work together to eliminate ring blow-by and maximize power output.

Key Features:

• Bore size: 79.00mm (1.00mm oversize)
• Stroke length: 70.00mm
• Displacement: 686cc
• Material: 4032 high-silicon aluminum alloy with ArmorGlide skirt coating
• Engine type: 2-stroke — fits cast iron bore cylinders
• Dedicated aerospace-grade forging for superior strength-to-weight ratio
• Computer-engineered skirt profile for minimal cylinder wall friction
• Anti-detonation grooves and optimized ring land diameter to prevent ring blow-by
• Race-proven design trusted by top Supercross, Motocross, and GNCC race teams

Kit Includes:

• 1x Forged piston (2433M07900)
• 1x Ring set (3110LK — 79.00mm Semi-Keystone L Ring Set)
• 1x Wrist pin (S631 — 20 x 60.0mm non-chromed)
• 1x Circlip set (CW20 — Round wire pin locks, 20mm)

Note: This is an oversize piston. Oversize pistons require cylinder boring or sleeving. Only Wiseco replacement ring sets should be used with Wiseco forged pistons.