What is the bore size of this cylinder kit?

This Athena cylinder kit has a bore size of 77mm. This is the standard size for the specified Yamaha models.

What materials are used in this cylinder kit?

The cylinder is constructed from aluminum with a galvanic coating. The kit includes a forged piston that features a molybdenum coating.

Does this cylinder kit come with all the necessary parts for installation?

This kit includes the cylinder and a forged piston. It is recommended to check the manufacturer's instructions for any additional gaskets or seals that may be required for installation.

Athena

Athena 14-17 Yamaha YZ 250 F 77mm Cylinder

Name: Athena 14-17 Yamaha YZ 250 F 77mm Cylinder
Brand: Athena
Price: 326.11 USD
Availability: InStock

$326.11

Fits 2014-2018 Yamaha YZ250F and 2015-2018 WR250F. This Athena cylinder kit includes a forged piston with a molybdenum coating.

Key Features

Direct fit — verified for 2014-2018 Yamaha YZ250F and 2015-2018 WR250F
Aluminum cylinder with galvanic coating
Forged piston with molybdenum coating
77mm bore size

Fits these vehicles

Yamaha WR250F 2015-2018
Yamaha YZ250F 2014-2018

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Product Details

Athena makes this cylinder kit for the 2014-2018 Yamaha YZ250F and 2015-2018 WR250F. This kit replaces your worn-out cylinder and piston, getting your engine running strong again. It's a well-built replacement for your dirt bike.

The cylinder is made from aluminum and features a galvanic coating. The included forged piston has a molybdenum coating, which helps reduce friction during operation.