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Athena P400485100073 Big Bore Cylinder Kit (300cc) - 8.00 Oversize to 85.00mm Bore, 13.3:1 Compression Ratio

SKU: 8748978

Athena P400485100073 Big Bore Cylinder Kit (300cc) - 8.00 Oversize to 85.00mm Bore, 13.3:1 Compression Ratio

Athena
$1,003.68
$1,003.68 $1,102.95
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This is a pre order item. We will ship it when it comes in stock.
Bore: 85.00mm
Compression: 13.3:1 Compression
Sizing: 8.00mm Oversize

Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets. Includes Forged piston, rings, clips and pin. Athena top-end gasket set includes required seals and hardware. Easy-to-follow step-by-step installation instructions. Most are bolt-on; no machining required except where noted.

Vehicle Fitment:

2020-2023 Yamaha WR250F
2019-2023 Yamaha YZ250F
2021-2023 Yamaha YZ250F Monster Energy Yamaha Racing Edition
2020-2023 Yamaha YZ250FX
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