Supermax Gearbox - Dual Speed

The SuperMax 2-Speed Gearbox is built to eliminate the most inefficient part of trailer operation-manual cranking. Paired with a standard cordless drill, it transforms a slow, physically demanding task into a fast, controlled, and repeatable process. Its two-speed design gives you the flexibility to prioritize either speed or lifting power, making it easy to operate the jack efficiently in a wider range of conditions.

High gear is designed for quickly extending or retracting the jack when the trailer is unloaded or under a light load. When greater lifting power is needed, simply shift into the 14:1 low gear. This high-torque reduction multiplies the drill’s input power, providing the mechanical advantage needed to lift heavy loads smoothly without excessive effort or loss of control. Instead of forcing the drill-and the operator-to do all the work, the gearbox handles the load while maintaining steady, predictable operation.

The SuperMax is engineered for repeated heavy-duty use. Its housing is machined from billet aluminum to withstand demanding environments and continuous high-torque cycles, making it well suited for job sites, daily-use trailers, and fleet applications where reliability is essential.

A quick-attach system allows the gearbox to be installed, removed, or moved between compatible trailers in seconds without permanent modifications. There is no wiring, complicated installation, or learning curve-just attach the gearbox, select the appropriate gear, connect a standard cordless drill, and begin operating.

Manufactured in the USA, the SuperMax 2-Speed Gearbox is designed as a durable, long-term solution rather than a light-duty accessory. It combines the convenience of fast jack travel with the torque needed for heavy lifting, reducing physical effort, improving efficiency, and eliminating manual cranking altogether.