Wiseco Forged Series Piston Kit with Gaskets - Yamaha PW50 (1985-2025) - 40.00mm Bore (Standard) - Air Cooled - 2-Stroke
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Wiseco Forged Series Piston Kit with Gaskets - Yamaha PW50 - Standard Bore
Premium Wiseco Forged Series piston kit with complete gasket set for the Yamaha PW50 youth off-road bike. This is the STANDARD BORE (40.00mm) kit - direct replacement for stock pistons!
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
- Standard bore - no cylinder work required
- Engineered, forged and machined in the USA
- 41 years of fitment (1985-2025)!
Piston Specifications
- Bore Size: 40.00 mm (Standard)
- Piston Diameter: 39.96 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: 0.65 lbs
Fitment
- Yamaha PW50: 1985-2009, 2012-2025
- Yamaha PW 50: 2010-2011
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
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