1999 - 2023
YAMAHA YZ 250
Forged piston kit
| ATHENA
Fits to:
YAMAHA YZ 2T 250 cc [1999 - 2023]
Specifications
| Manufacturer | ATHENA |
|---|---|
| Big end pin diameter (mm) | 18x13x53 |
| Bore diameter (mm) | 66.35 |
| Compression ratio | STD |
| Displacement (cc) | 250 |
| Net weight (kg) | 0.28 |
| Number of segments | 2 |
| Piston head type | Domed |
| Piston pin type | Biconical |
| Piston type | Forged |
| Piston diameter | 66.35 mm |
| Displacement (cc) | 250 |
| Piston diameter | 66.35 mm |
| Displacement (cc) | 250 |
| Piston diameter | 66.35 mm |
| Bore size | 66,34 mm |
| Compression ratio | Stock |
| Type | B |
| Units | Kit |
| Engine type | 2-Stroke |
| Piston material | Silicium |
Product description
2-stroke pistons are made from 4032 silicium 4-stroke pistons are made from 2618 silicium the same material used to produce Formula 1 pistons Both include 3% copper in materials for better heat resistance All pistons are forged using a precision heat-treatment process that allows for production tolerances of just 0,01 mm Forged piston kits are available in A, B and C sizing Forged piston tooling allows for the lightest available product Kits include antiwear coated piston, rings, pin and circlips