Features:
- Most Wiseco 2-cycle pistons are forged from high-silicone bar stock
 - Greater strength and lower expansion at high temperatures
 - Complete piston kits include High-Performance forged pistons, rings, wrist pins, circlips and top-end gasket kit for one complete engine
 - All Wiseco High-Performance pistons are priced with rings, wrist pins and circlips
 - Wiseco ring types are not interchangeable (i.e., CD is not interchangeable with LC) and fit only Wiseco pistons
 - WARNING: Wiseco pistons can be fitted only with Wiseco rings.
 
Specifications:
- Product Name: Rebuild Kit
 - Type: Top End
 - Piston Material: Aluminum / Forged
 - Bore Size: 47.50 mm
 - Bore - Oversize: +0,50 mm / +0.50 mm
 - Displacement: 81 cc
 - Stroke Length: 45.60 mm
 - Compression Ratio: 11:1
 - Units: Each
 - Riding Style: ATV
 
Fitment:
| Year | Make | Model | 
| 1985 | Yamaha | YFM 80 Moto 4 | 
| 1986 | Yamaha | YFM 80 Moto 4 | 
| 1987 | Yamaha | YFM 80 Moto 4 | 
| 1988 | Yamaha | YFM 80 Moto 4 | 
- Availability:
 - STG Part Number:
 - W|2457-PK1679|3
 - Manufacturer's Part Number: