What is a big bore cylinder kit?

A big bore cylinder kit replaces your stock cylinder with a larger one. This increases the engine's displacement, which generally leads to more horsepower and torque.

What is the galvanic coating on the cylinder?

The galvanic coating on the aluminum cylinder helps with heat dissipation and provides a hard, wear-resistant surface for the piston to move against.

Does this kit come with everything needed for installation?

This kit includes the cylinder and piston. You will need to reuse your stock cylinder head and other necessary gaskets and hardware for installation. Refer to the manufacturer's instructions for a complete list of required components.

Athena

Athena 02-18 Yamaha YZ 85 Complete Cylinder Big Bore

Name: Athena 02-18 Yamaha YZ 85 Complete Cylinder Big Bore
Brand: Athena
Price: 809.95 USD
Availability: InStock

$809.95

Fits 2002-2019 Yamaha YZ85. This Athena big bore cylinder kit increases engine displacement for more power.

Key Features

Direct fit — verified for 2002-2019 Yamaha YZ85
Aluminum cylinder with galvanic coating — resists wear and heat
Forged piston with molybdenum coating — reduces friction and improves piston life
Increases engine displacement — for more power and torque

Fits this vehicle

Yamaha YZ85 2002-2019

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Product Details

Athena makes this big bore cylinder kit for the 2002-2019 Yamaha YZ85. This kit replaces your stock cylinder with a larger one, increasing engine displacement for improved power and torque. It's a solid option if you're looking to get more performance out of your YZ85.

The cylinder is made from aluminum and features a galvanic coating for durability. It comes with a forged piston that has a molybdenum coating, which helps reduce friction and improve wear resistance.