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 ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
