The John Deere 3120 transmission listing shows 12F/6R gears. Top travel speed is 16.4 mph forward and 4.2 mph reverse. Transmission options include AutoPowr IVT, AutoPowr, IVT, CommandQuad, AutoQuad, and PowrQuad.
Forward/reverse gears12F/6R
Forward speed26.4 km/h
Reverse speed6.8 km/h
Transmission optionsAutoPowr IVT, AutoPowr, IVT, CommandQuad + 4 more
The John Deere 3120 transmission listing includes 12F/6R forward/reverse gears. That is stronger than a vague transmission label because it gives real gear-count detail
Speed note
For travel-speed comparison, the John Deere 3120 is listed with 16.4 mph forward speed and 4.2 mph reverse speed. Reverse speed is noticeably lower than forward speed, which is common on many tractor transmissions
Options note
The John Deere 3120 option list includes AutoPowr IVT, AutoPowr, IVT, CommandQuad, AutoQuad, PowrQuad, PowerShift, PowrReverser. The long option list usually means this model family had multiple transmission packages across trims, years or markets
Reverser note
The John Deere 3120 listing includes PowerReverser. That is a useful buyer detail for loader work, shuttling and frequent forward/reverse direction changes
Official information note
Mistakes do happen. Transmission specs can change by year, trim, region, tire size and option package. Please check the operator manual, build sheet and official deere.com website for official information.
