Athena 82.96mm 4T Forged Racing Piston Kit for Big Bore Cylinder (S5F08300002B)
- Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons
- Includes 3% copper in materials for better heat resistance
- Pistons are forged using a precision heat-treatment process that allows for production tolerances of just .005mm
- Forged piston tooling allows for the lightest available product
- Kits include antiwear coated piston, rings, pin and circlips
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2001-2009 | Yamaha | WR250F | |
| 2011-2012 | Yamaha | WR250F | |
| 2001-2007 | Yamaha | YZ250F | |