| Specification | Value |
|---|---|
| Piston Diameter | 41.46 mm |
| Bore - Oversize | +1,50 mm / +1.50 mm |
| Compression Ratio | Stock |
| Displacement | 49 cc |
| Piston Material | 4032 Aluminum Alloy / Forged |
| Riding Style | Off-Road |
| Stroke Length | 39,20 mm / 39.20 mm |
| Engine Type | 2-Stroke |
| Units | Kit |
| Bore Size | 41.50 mm |
| Model | Forged Series |
| Skirt Coating | Non-Coated |
| Product Name | Piston Kit |
- Forged from high-silicon aluminum alloy for maximum strength and dependability
- Wiseco offers a complete range of popular piston models and years for both trail and racing applications
- Durability, longevity and increased horsepower
- Innovative forging design and piston skirt provide maximum horsepower and torque
- Features forged pistons, rings, wrist pins, and circlips
- These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
- Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
- GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
- Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
- Cylinder sleeves must be purchased separately.
- Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.
FITMENTS
| Year | Make | Model |
|---|---|---|
| 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 | Yamaha | PW50 |
| 2010-2011 | Yamaha | PW 50 |
- MAP:
- Yes
