Vertex Big Bore forged piston kit.
- Compression Ratio: 13.8:1.
- Cylinder bore: 80 mm.
- Displacement: 270 cc.
- Size above standard: 3 mm.
Fits:
| FANTIC |
XEF 250 |
250 |
2025 |
|
| FANTIC |
XEF 250 |
250 |
2024 |
|
| FANTIC |
XEF 250 |
250 |
2023 |
|
| FANTIC |
XEF 250 |
250 |
2022 |
|
| FANTIC XXF 250 [250] |
| FANTIC |
XXF 250 |
250 |
2026 |
|
| FANTIC |
XXF 250 |
250 |
2025 |
|
| FANTIC |
XXF 250 |
250 |
2024 |
|
| FANTIC |
XXF 250 |
250 |
2023 |
|
| FANTIC |
XXF 250 |
250 |
2022 |
|
| YAMAHA WR 250 F [250] |
| YAMAHA |
WR 250 F |
250 |
2026 |
|
| YAMAHA |
WR 250 F |
250 |
2025 |
|
| YAMAHA |
WR 250 F |
250 |
2024 |
|
| YAMAHA |
WR 250 F |
250 |
2023 |
|
| YAMAHA |
WR 250 F |
250 |
2022 |
|
| YAMAHA |
WR 250 F |
250 |
2021 |
|
| YAMAHA |
WR 250 F |
250 |
2020 |
|
| YAMAHA YZ 250 F (CG40) [250] |
| YAMAHA |
YZ 250 F (CG40) |
250 |
2021 |
|
| YAMAHA |
YZ 250 F (CG40) |
250 |
2020 |
|
| YAMAHA |
YZ 250 F (CG40) |
250 |
2019 |
|
| YAMAHA YZ 250 FX [250] |
| YAMAHA |
YZ 250 FX |
250 |
2024 |
| YAMAHA |
YZ 250 FX |
250 |
2023 |
|
| YAMAHA |
YZ 250 FX |
250 |
2022 |
|
| YAMAHA |
YZ 250 FX |
250 |
2021 |
|
| YAMAHA |
YZ 250 FX |
250 |
2020 |
|
| YAMAHA |
YZ 250 FX |
250 |
2019 |
|
| YAMAHA YZ 250 F [250] |
| YAMAHA |
YZ 250 F |
250 |
2025 |
|
| YAMAHA |
YZ 250 F |
250 |
2024 |
|
| YAMAHA |
YZ 250 F |
250 |
2023 |
|
| YAMAHA |
YZ 250 F |
250 |
2022 |

Well known Vertex pistons from Italy. They make a complete range of 2 and 4 stroke race pistons for the off-road markets of motocross and enduro. Two stroke pistons are made from gravity cast aluminium alloy with silicone content. Four stroke pistons are forged for superior strength and durability.
| Brand |
Model |
Year |
Name |
CC |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
WR |
2020 |
|
250 |
| YAMAHA |
WR |
2020 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
WR |
2021 |
|
250 |
| YAMAHA |
WR |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| FANTIC |
XEF |
2022 |
|
250 |
| FANTIC |
XEF |
2022 |
Trail |
250 |
| FANTIC |
XXF |
2022 |
|
250 |
| YAMAHA |
YZ |
2023 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
YZ |
2023 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
WR |
2023 |
|
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| FANTIC |
XEF |
2023 |
|
250 |
| FANTIC |
XXF |
2023 |
|
250 |
| FANTIC |
XEF |
2023 |
Trail |
250 |
| YAMAHA |
YZ |
2024 |
50th Anniversary Edition |
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
50th Anniversary Edition |
250 |
| YAMAHA |
WR |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| FANTIC |
XXF |
2024 |
|
250 |
| FANTIC |
XEF |
2024 |
|
250 |