The John Deere 4120 transmission listing shows 12F/12R gears and 12-speed. Top travel speed is 18.5 mph forward and 10.5 mph reverse. Transmission options include PowrReverser and hydrostatic.
Forward/reverse gears12F/12R
Forward speed29.8 km/h
Reverse speed16.9 km/h
Transmission optionsPowrReverser, hydrostatic
Reverser/shuttlePowerReverser
John Deere 4120 Transmission Specs
Forward/reverse gears
12F/12R
Transmission gear count
12-speed
Top forward speed
18.5 mph
Top reverse speed
10.5 mph
Transmission options
PowrReverser, hydrostatic
Shuttle or reverser type
PowerReverser
Transmission Speed Comparison Chart
Top forward speed comparison
This model
18.5 mph
Average
17.9 mph
Low
1.6 mph
High
31.1 mph
Top reverse speed comparison
This model
10.5 mph
Average
11.4 mph
Low
1.7 mph
High
31.1 mph
John Deere 4120 Extra Transmission Notes
Gear note
On the John Deere 4120, 12F/12R forward/reverse gears and a 12-speed transmission figure are the key numerical transmission details. More available speeds usually mean finer control across field, loader and transport work
Speed note
The captured transmission speed figures for the John Deere 4120 are 18.5 mph forward and 10.5 mph reverse. Reverse speed is noticeably lower than forward speed, which is common on many tractor transmissions
Reverser note
The John Deere 4120 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.
