Cylinder Works 94mm +4.0 Big Bore Cylinder Kit – Suzuki DR-Z400 / Kawasaki KFX400 / Arctic Cat DVX400 (2000–2022) – 11.3:1 Compression – 422-41001K / 41001-K01

Description

Boost your DR-Z400, KFX400, or DVX400’s performance with this Cylinder Works 94 mm (+4.0 mm) Big Bore Kit. Designed as a bolt-on upgrade, it increases displacement and compression for stronger mid-range torque and horsepower without requiring engine case machining. Each cylinder is nickel-silicon-carbide plated for maximum durability and matched with a Vertex piston for long-term reliability.

What’s Included

• 94 mm Big Bore Cylinder (nickel-silicon-carbide plated)

• Vertex Forged Piston Kit (11.3:1 compression)

• Piston Rings, Wrist Pin & Circlips

• Complete Top End Gasket Set (valve-stem seals not included)

Fitment

Direct fit for the following models:
Suzuki DR-Z400 / DR-Z400S / DR-Z400SM / LT-Z400 (2000–2022)
Kawasaki KFX400 (2003–2006)
Kawasaki KLX400R (2003–2004)
Arctic Cat DVX400 (2004–2008)

✅ No case machining required
✅ Uses OEM gaskets and hardware
✅ Ideal for rebuild or power upgrade projects

Key Features

• Increases displacement and compression for higher output

• Cylinder appears OEM with no re-plating required

• Nickel-silicon-carbide coating extends service life

• Precision-matched Vertex piston for optimal fit and low engine noise

• Made in the USA

Warranty Info

Covered under Cylinder Works’ limited manufacturer warranty against defects in materials and workmanship.

Price & SKU

• Retail Price: $775.95

• SKU: 422-41001K / 41001-K01

• Weight: 5.29 lb

• Handling: Ships next business day