Athena Big bore 290CC Kit 2018-2025 CRF250R/RX

SKU: P400210100067
$978.95
$749.95
$749.95
On Sale
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per item

Athena 290cc kit, 85mm Piston for 2018-2024 CRF250R and CRF250RX Models.


Big Bore Kit Includes:

  • High quality forged piston
  • Wrist Pin and clips
  • Specially designed, cast and plate cylinder to fit maximum size bore and maintain strength.
  • Top End Gasket Kit


Pair it with our GET ECU for proper tuning and get maximum gains - we have featured this build on our youtube channel, you can find that here!

No case machining needed, direct bolt on.

Increase torque and power dramatically.


Athena P/N P400210100067