4.12 Mod Rear w/o Tubes Pro Series

The Diversified Machine 4.12 Mod Rear without Tubes Pro Series is a complete rear axle assembly kit designed for high-performance automotive applications requiring precision gear ratios and lightweight construction. Built around a magnesium center housing paired with a 10-inch ring gear and 4.12:1 final drive ratio, this Pro Series rear axle delivers the mechanical advantage needed for serious acceleration and torque multiplication in performance vehicles, drag racing platforms, and heavy-duty off-road recovery scenarios.

The 4.12 gear ratio significantly amplifies engine torque at the wheels compared to lower (numerically smaller) ratios, making it the choice for applications where launch performance and low-speed pulling power are priorities. The magnesium center construction reduces rotating mass, which improves acceleration response and decreases unsprung weight. The tube-less design (no tubes included) means this kit is suited for builders integrating their own axle tubes or upgrading existing installations with a purpose-built center section. At 89.33 lbs, the complete assembly arrives ready for installation into compatible 10-inch ring gear platforms.

Buyers selecting the Diversified Machine 4.12 Mod Rear Pro Series typically include drag racers optimizing 60-foot times, off-road enthusiasts requiring aggressive gear ratios for vehicle recovery, and performance car builders targeting sub-6-second acceleration. The Pro Series designation indicates enhanced internal components and precision assembly compared to standard offerings. This kit requires proper installation by a qualified technician familiar with rear axle assembly and differential setup, including backlash and gear mesh adjustment. Verify chassis compatibility with 10-inch ring gear specifications and confirm axle housing dimensions (25 x 17 x 28 inches) fit your platform before ordering.