Restore grain trailer hopper door operation with the TRION PRODUCTS INC 2-Speed Hopper Door Gearbox. This Timpte-style aftermarket replacement combines higher torque in low gear with faster adjustment in high gear, helping operators control door movement during unloading.

A steel housing, constant-mesh gearing and 26-1/4-inch right-side horizontal shaft support its grain-hauling application. Designed to replace compatible assemblies and this gearbox is a practical replacement for trailer maintenance. Confirm the shaft length and mounting configuration against your existing assembly before purchase.