YZ250 F 19-20 (76.95mm) Virzuļa kompl. 01.2439.a
| Displacement | 250 | cc |
| Bore - Standard | 77.00 | mm |
| Cylinders | 1 | N/A |
| Stroke | 53.60 | mm |
| Compression Ratio - Actual | 13.5:1 | N/A |
| Bore - Oversize | STD | N/A |
| Compression Height | 12.30 | mm |
| Dome Type | Flat with Raised Top | N/A |
| Additional Info | 4 Valve Pockets, Forged Piston | N/A |
| Piston Pin Hole Diameter | 16.00 | mm |
| Skirt Coating | - | N/A |
| Piston Size | 76.96 | mm |
| OEM Reference No | 1SM-11631-00 | N/A |
| Total Height | 38.70 | mm |
| Country of Origin | USA | N/A |
| Boss Space In | 17.40 | mm |