Revolution Gear & Axle DC-D30-JK-HD Dana 30 27-Spline Axle Kit, 07-18 JK

Vehicle Fitment

• 2007-2018 Jeep Wrangler JK Sport and Sahara models (Dana 30 front axle, 27-spline)

Fitment Notes

• Not compatible with Rubicon models, which use a Dana 44 front axle - see Revolution Gear & Axle's DC-D44-JK-HD kit for Rubicon applications instead
• Confirm your JK is equipped with the Dana 30 front axle and 27-spline configuration before ordering
• Sold as a complete axle kit - no locker included; for locker-equipped applications, check availability of a compatible locker-specific kit

Features

• Discovery Series 4340 chromoly construction delivers a significant strength upgrade over factory axle shafts
• Replaces the factory Spicer 1350-style 5-7166X U-joint with Revolution Gear & Axle's Heavy Duty Chromoly 1350-style needle bearing U-joint for a stronger, more durable axle setup
• Larger 1350-style U-joint design also allows extra clearance for tighter turning versus the smaller 5-760X U-joint
• Includes matched inner axles, outer stub axles, HD U-joints, and full circle snap rings for a complete, ready-to-install kit
• Backed by a 10-Year Warranty covering manufacturing defects, axle breakage, bent axles, and twisted splines
• HD Chromoly U-joints carry a limited 10-Year Warranty as well (standard U-joints are typically covered for 1 year)

Specifications

• Axle Application: Dana 30 Front
• Spline Count: 27-Spline
• Axle Material: 4340 Chromoly
• U-Joint Type: Heavy Duty Chromoly 1350-Style Needle Bearing
• Series: Discovery Series
• Warranty: 10 Years (Axles), 10 Years Limited (HD U-Joints)

Included Components

• 2x 4340 Chromoly Inner Axles
• 2x 4340 Chromoly Outer Stub Axles
• 2x Revolution Gear HD Chromoly 1350-Style Needle Bearing U-Joints
• 8x Full Circle Snap Rings

Product Description

The Revolution Gear & Axle DC-D30-JK-HD is a Discovery Series 4340 chromoly front axle kit built for 2007-2018 Jeep Wrangler JK Sport and Sahara models with the Dana 30 front axle and 27-spline configuration. This kit delivers a meaningful strength upgrade over factory axle shafts, giving JK owners a more durable foundation for trail use, larger tires, or aggressive driving.

The standout feature is the U-joint upgrade: this kit replaces the factory Spicer 1350-style 5-7166X U-joint with Revolution Gear & Axle's own Heavy Duty Chromoly 1350-style needle bearing U-joint, creating the strongest axle setup in the lineup while also providing extra clearance for tighter turning compared to the smaller 5-760X U-joint used in non-HD kits.

Everything needed for a complete axle shaft replacement is included: matched 4340 chromoly inner and outer stub axles, HD chromoly U-joints, and full circle snap rings to hold it all together. Backed by a 10-year warranty covering manufacturing defects, breakage, bent axles, and twisted splines - with the HD U-joints themselves also carrying a 10-year limited warranty, well beyond the standard 1-year U-joint coverage.