What is the main benefit of this big bore kit?

This kit increases your engine's displacement to 435cc. This means more air and fuel can be burned, resulting in a significant increase in power and torque compared to the stock 400cc engine.

What materials are used in the cylinder and piston?

The cylinder is made of aluminum with a galvanic coating for durability and heat management. The included piston is forged and has a molybdenum coating to reduce friction and improve wear resistance.

Can this kit be shipped to California?

No, this kit is not CARB approved and cannot be shipped to California due to emissions regulations.

Athena

Athena 03-06 Kawasaki KLX 400 94mm 435cc Big Bore Cylinder Kit

Name: Athena 03-06 Kawasaki KLX 400 94mm 435cc Big Bore Cylinder Kit
Brand: Athena
Price: 927.32 USD
Availability: InStock

$927.32

Fits 2000-2016 Suzuki DR-Z400. Athena 435cc Big Bore Cylinder Kit. Increases engine displacement for more power.

Key Features

Direct fit — verified for Kawasaki KFX400 and Suzuki DR-Z400
Increases displacement to 435cc — more power and torque from your engine
Aluminum cylinder with galvanic coating — durable and helps with heat dissipation
Forged piston with molybdenum coating — strong and reduces friction for better performance

Fits these vehicles

Kawasaki KFX400 2003-2006
Suzuki DR-Z400 2000-2016

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Product Details

You get an aluminum cylinder and forged piston in this Athena Big Bore Cylinder Kit. This kit increases your engine's displacement to 435cc from the stock 400cc, giving you more power and torque. It's designed for the Kawasaki KFX400 and Suzuki DR-Z400 models.