What is included in the Cylinder Works Big Bore Cylinder Kit?

This kit includes the big bore cylinder, a hand-matched 80mm Vertex piston, and a complete top-end gasket kit with O-rings. It's designed to provide most of what you need for the top-end rebuild.

What material is the cylinder made from?

The cylinder is made from a 2618 aluminum alloy. This material is chosen for its strength and durability, which is important for handling the increased performance of a big bore engine.

Will this kit require any special tools for installation?

While the kit itself contains the main components, installing a big bore cylinder typically requires standard engine rebuilding tools. It's always recommended to refer to the manufacturer's installation instructions for specific tool requirements and procedures.

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Specifications

Brand: Cylinder Works
Part #: 21010-1
UPC: 714205035261

Cylinder Works 15-19 Yamaha WR 250 F 250cc Big Bore Cylinder 80mm

Name: Cylinder Works 15-19 Yamaha WR 250 F 250cc Big Bore Cylinder 80mm
Brand: Cylinder Works
SKU: cylinder-works-cylinder-works-15-19-yamaha-wr-250-f-250cc-big-bore-cylinder-80mm-t14-727061
Price: 486.35 USD
Availability: BackOrder

$486.35

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Cylinder Works 15-19 Yamaha WR 250 F 250cc Big Bore Cylinder 80mm. Increases horsepower and engine displacement.

Key Features

Fits 2015-2019 Yamaha WR 250 F.
Increases horsepower and engine displacement.
Constructed from a 2618 aluminum alloy for strength and durability.
Includes a hand-matched 80mm Vertex big bore piston.
Comes with a complete top-end gasket kit and O-rings.

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About this part

Product Details

If you're looking to get more power out of your Yamaha WR 250 F, a big bore cylinder kit is a solid way to go. This kit from Cylinder Works is designed to increase your engine's displacement and horsepower, giving you that extra edge on the trail or track. It's built to look like the stock cylinder but perform like a race-ready component.

Inside this kit, you'll find a hand-matched Vertex piston that's specifically sized for the 80mm bore. The cylinder itself is constructed from a 2618 aluminum alloy, which is known for being strong and durable, helping to handle the increased demands of a bigger engine. You also get a complete top-end gasket kit, including O-rings, so you have most of what you need to get this installed. Buying it as a kit can also save you some money compared to sourcing all the OEM parts separately.