Wiseco Forged Series Piston Kit with Gaskets - Yamaha PW50 (1985-2025) - 41.00mm Bore (+1.00mm Oversize) - Air Cooled - 2-Stroke

Wiseco Forged Series Piston Kit with Gaskets - Yamaha PW50 - +1.00mm Oversize

Premium Wiseco Forged Series piston kit with complete gasket set for the Yamaha PW50 youth off-road bike. This is the +1.00mm OVERSIZE (41.00mm) kit for worn cylinders!

⚠️ Oversize Piston - Cylinder Work May Be Required

This piston is +1.00mm oversize. Cylinder boring to 41.00mm may be required for proper fit.

Kit Includes

• Forged Series Piston
• Ring Set
• Wrist Pin
• Circlip
• Bearing
• Complete Gasket Set

Key Features

• Forged Series - dedicated forgings with optimized strength to weight ratio
• 4032 aluminum alloy construction
• Designed for air-cooled 2-stroke engine
• Complete top-end gasket kit included
• Engineered, forged and machined in the USA
• 41 years of fitment (1985-2025)!

Piston Specifications

• Bore Size: 41.00 mm (+1.00mm Oversize)
• Piston Diameter: 40.96 mm
• Stroke Length: 39.20 mm
• Material: 4032 Aluminum Alloy
• Skirt Coating: Non-Coated

Engine Specifications

• Displacement: 49cc
• Engine Type: 2-Stroke
• Cooling System: Air Cooled
• Weight: 0.45 lbs

Fitment

• Yamaha PW50: 1985-2009, 2012-2025
• Yamaha PW 50: 2010-2011