GRIT GEARS 4340 Chromoly Rear Axle Kit for Jeep Wrangler JK Rubicon

GRIT GEARS 4340 Chromoly Rear Axle Kit – Jeep Wrangler JK Rubicon (Dana 44)

This premium rear axle kit features 4340 chromoly construction built to handle demanding off-road conditions. Designed for Dana 44 differentials with 32-spline axles, it accommodates both 5x5 and 5x5.5 bolt patterns for versatile fitment. The complete kit includes Timken bearings, wheel studs, high-quality seals, and retainers — everything needed for a professional installation.

The superior strength of 4340 chromoly material provides enhanced durability and reliability compared to standard axles, making it ideal for lifted builds, aggressive terrain, and increased payload demands.

Part Numbers

• Left: GR-AX-003557
• Right: GR-AX-003558

Specifications

• Differential: Dana 44 JK Rubicon
• Material: 4340 Chromoly Steel
• Spline Count: 32 Spline
• Length: Left – 31.25" | Right – 32.6"
• Bolt Pattern: 5x5 and 5x5.5
• Location: Rear
• Axle Seals: Included
• Kit Includes: Timken bearings, wheel studs, seals, and retainers

Fitment

Direct-fit for Jeep Wrangler JK Rubicon (2007–2018) with Dana 44 rear differential.

Warranty

Grit Gears Axles are backed by a 10 Year Warranty covering manufacturing defects and axle breakage, bent axles and twisted splines. This warranty is non-transferable. Parts such as bearings, boot and seals, are covered under 1 year warranty.

About Grit Gears

Grit Gears is the premier destination for high-performance ring and pinion gears and heavy-duty axle shafts. Precision-engineered for flawless fitment, exceptional wear resistance, and maximum power delivery — built to endure the absolute limits of automotive performance.