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 torque and horsepower.

What is the galvanic coating on the cylinder?

The galvanic coating on the aluminum cylinder is a surface treatment that adds a layer of hardness and wear resistance. It helps the cylinder withstand the friction and heat generated during operation.

Does this kit come with everything needed for installation?

This kit includes the cylinder, forged piston, piston rings, gaskets, wrist pin, and clips. You will need to refer to the manufacturer's service manual for specific installation procedures and any additional tools or fluids required.

Athena

Athena 04-09 Honda CRE 250 F R Big Bore Complete Cylinder Kit

Name: Athena 04-09 Honda CRE 250 F R Big Bore Complete Cylinder Kit
Brand: Athena
Price: 1033.05 USD
Availability: InStock

$1033.05

Fits 2004-2009 Honda CRF250R and CRF250X. This Athena big bore cylinder kit includes a forged piston and aluminum cylinder for improved performance.

Key Features

Direct fit — verified for 2004-2009 Honda CRF250R and CRF250X
Big Bore Cylinder Kit — Increases engine displacement for more power.
Aluminum Cylinder — Lightweight and offers good heat transfer.
Galvanic Coating — Adds durability to the cylinder walls.
Forged Piston — Stronger than cast pistons, handles higher stress.
Molybdenum Coating on Piston — Reduces friction for smoother operation and longer life.

Fits these vehicles

Honda CRF250R 2004-2009
Honda CRF250X 2004-2009

Need Help?

631-982-0042

Fast Shipping

Nationwide delivery

Secure Checkout

Safe & protected

Since 1957

Family-owned

Product Details

Already running a performance exhaust and intake on your 2004-2009 Honda CRF250R or CRF250X? This Athena big bore cylinder kit is the next piece to unlock more power. It replaces your stock cylinder with a larger one, increasing displacement for more torque and horsepower.

This kit uses an aluminum cylinder with a galvanic coating for durability and heat dissipation. It comes with a forged piston that has a molybdenum coating, which helps reduce friction and improve piston life. The larger bore size changes the engine's displacement, giving you a noticeable boost in performance.