Seller notes

Athena 85mm 289cc Big Bore Cylinder Top End Kit!This is the best and most reliable big bore kit on the market!Fits Honda CRF250R & CRF250RX Dirt Bikes Years 2019 2020 2021 2022 2023 2024 This kit includes:85mm 289cc Nikasil Athena Big Bore CylinderAthena 89mm Forged & Race Coated Piston Kit (Includes, Piston, Pin, Rings & Clips)13.7:1 Compression (Perfect For Pump Gas)Athena Complete Top End Gasket SetAll parts come with warranty.We ship worldwide & ship all domestic orders free!...

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