SKU: TENMG20140B
MPN: MG20140B
The TEN FACTORY Front Axle Dana 44 JK (MG20140B) is a performance front axle shaft kit built for 2007–2018 Jeep Wrangler Rubicon owners who have outgrown factory shafts. Original equipment axle shafts are cut for stock tire sizes and moderate trail use. Once you add larger tires, lower gears, and serious off-road duty, those factory shafts become the weak link. This kit replaces both the left and right inner shafts with 4340 chromoly assemblies engineered for strength and durability, backed by TEN FACTORY's TEN-Year Replacement Warranty. It's a direct fit for the JK Dana 44 front axle housing.
Both shafts are forged from 4340 chromoly, the standard alloy for high-stress drivetrain work, and machined with 30-spline inner shafts for added torsional capacity over thinner factory splines. The kit follows the JK's factory unequal-length layout, with a 26.06-inch left side shaft and a 39.83-inch right side shaft. It uses the 5-7166X U-joint, so the shafts work with the correct heavy-duty joint for the application. Both left and right assemblies are included in the kit, so there's no mixing of new and worn shafts across the axle. If you're rebuilding the front end, pair these shafts with a fresh Dana 44 shim kit and a quality universal joint to finish the job correctly.
If you wheel a Rubicon on 35s or larger, run aggressive gearing, or break stock shafts under articulation and lockup, this kit solves the problem at the source. It's also a smart upgrade ahead of a regear or locker install, since pulling the front shafts is already part of that work. Buyers building a stronger front Dana 44 often add an electronic locker for the Dana 44 at the same time. Browse the rest of our drivetrain parts for the bearings, seals, and hardware to complete the rebuild.
This kit fits the 2007–2018 Jeep Wrangler Rubicon front Dana 44 axle, per TEN FACTORY specifications. It follows the factory JK unequal-length layout, with a 26.06-inch left shaft and a 39.83-inch right shaft, so both sides of the front axle are covered in one kit.
Both shafts are forged from 4340 chromoly, the alloy used for high-stress off-road drivetrain components. Combined with 30-spline inner shafts, the design adds strength and durability over factory shafts cut for stock tire sizes and moderate trail use.
Yes. The kit includes both the left and right assemblies, so you replace both inner shafts at once rather than mixing a new shaft with a worn one across the front axle.
These shafts use the 5-7166X U-joint. Matching the correct heavy-duty joint to the shaft keeps the front Dana 44 working as a system, which matters once you run larger tires and aggressive gearing.
TEN FACTORY backs these front axle shafts with an exclusive TEN-Year Replacement Warranty, per manufacturer specifications. That coverage reflects the 4340 chromoly construction and the kit's intended use as a strength upgrade over original equipment shafts.
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