Athena 81.96mm Big Bore "B" Piston Kit 13.1:1 Compression Ratio (S5F08200001B)
- All 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 circlip
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2004-2009 | Honda | CRF250R | |
| 2004-2009 | Honda | CRF250X | |