Athena 94 mm Big Bore Cylinder Kit – Suzuki DR-Z400 / Kawasaki KFX400 / Arctic Cat DVX400 (2003 – 2017) – 12.3 : 1 Compression – 68-4410 / P400510100002

Description

Take your 400-class machine to the next level with the Athena 94 mm Big Bore Cylinder Kit. This bolt-on upgrade increases displacement and raises compression to 12.3 : 1, giving you a significant boost in torque and horsepower while maintaining OEM reliability. Designed and precision-machined in Italy, Athena’s high-quality cylinder features a nickel-silicon-carbide coating for exceptional wear resistance and heat transfer.

What’s Included

• 94 mm Big Bore Cylinder (12.3 : 1 compression)

• Forged Piston Kit (piston, rings, pin & circlips)

• Top-End Gasket Set

• Ready to install – no case machining required

Fitment

Direct fit for the following models:
Suzuki: DR-Z400 / DR-Z400S / LT-Z400 (2003 – 2017)
Kawasaki: KFX400 (2003 – 2006)
Arctic Cat: DVX400 (2004 – 2008)

✅ No re-plating or modifications needed
✅ Bolt-on performance upgrade for trail or track
✅ Works with stock or aftermarket exhaust systems

Key Features

• Increases displacement and compression for stronger power delivery

• Nickel-silicon-carbide plating for extended service life

• Forged piston matched to the cylinder for quiet, efficient operation

• Factory-style fit and appearance

• Made in Italy by Athena

Warranty Info

Backed by Athena’s limited manufacturer warranty against defects in materials and workmanship.

Price & SKU

• Retail Price: $984.95

• SKU: 68-4410 / P400510100002

• Weight: 0.20 lb (listing package weight)

• Handling: Ships next business day