A significant upgrade from OEM Narrow Track Dana 44 axle shafts. Engineered for maximum strength and consistent performance, these constant velocity axles eliminate the oscillation and "crow hop" characteristic of traditional U-joint designs — maintaining complete structural integrity across steering angles up to 45 degrees, including full lock positions.
Key Features
4340 Chromoly Steel: Dual-heat treated with profiled geometry to optimize load distribution for maximum durability
Double Arc Ball Cage: Dual-arc ball channel design distributes load evenly across two primary stress points, preventing ball migration during acceleration and deceleration cycles for smooth, consistent power delivery
TPE Thermoplastic Elastomer Boots: Manufactured using German Osberg blow-molding technology with DuPont TPEE rated from -60°C to +160°C — 3x the service life of conventional rubber boots, superior protection against dust, moisture, and contaminants
OETIKER Stainless Steel Clamps: OEM-approved supplier precision clamps with deburred and edge-rounded contact surfaces to minimize boot damage and ensure sustained seal performance
Fully assembled and ready for installation
Part Numbers
Right Side: GR-AX-394142
Middle Shaft: GR-AX-396648
Left Side: GR-AX-394143
Fitment
Fits all Jeep Wrangler JL Rubicon Narrow Track models (2018–2024) with Dana 44 Narrow Track axle housing (GCC spec).
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.
Grit gears is the premier destination for high-performance ring and pinion gears and heavy-duty axle shafts. Engineered for flawless fitment, exceptional wear resistance, and maximum power delivery, our components are built to endure the absolute limits of automotive performance.
Our premium ring and pinion sets and high-strength axle shafts are precision-engineered to handle maximum torque, extreme temperatures, and the harshest abuse. We combine cutting-edge R&D with premium materials to ensure that when the trail gets tough, your drivetrain stays flawless
