The TracMachine Off-Road Wheelchair features a 20-hp, air-cooled combustion engine, hydraulic drive system, and zero-turn hydrostatic transmission. Its top speed is 16 mph, it is 44-inches-wide x 50-inches-long, and it is joystick-steered. Standard on all three models: adjustable front- and rear-spring suspension; ROPS; light package (headlamps/running lights/turn signals); and five-point safety harness. The Plus and Plus 1 models include: connection system for a variety of attachments (e.g., snowplow), electric-powered actuators that slide the seat forward for easier entry/exit, and dual-cylinder lift system that raises the machine up to 8 inches for necessary in-the-field clearance.