M81 Complete Gearbox$954.00 Complete replacement gearbox for MyTana M81 cable machine. M81 Complete Gearbox quantity Add to cart Description Description Complete replacement gearbox for MyTana M81 cable machine. Part no. GEARBOX.COMP Related products Gearbox Gasket $9.50 Add to cart 3.5″ O.D. x 1/2″ Pulley $39.00 Add to cart 2.5″ O.D. x 1/2″ Pulley $30.00 Add to cart Foot Pedal and Hose $23.00 – $100.00 Select options Revolving Arm for M661 $124.00 Add to cart