The Kubota M128X has a hydrostatic transmission, with a top forward speed of 25.5 mph (41 km/h) and reverse speed of 14.9 mph (24 km/h). Service details captured: fluid Kubota Super UDT2 and oil capacity 66.4 qt (62.8 L).
Transmission typeHydrostatic
Forward speed25.5 mph (41 km/h)
Transmission fluidKubota Super UDT2
Kubota M128X Transmission Specs
Transmission type
Hydrostatic
Forward speed
25.5 mph (41 km/h)
Reverse speed
14.9 mph (24 km/h)
Transmission oil / fluid type
Kubota Super UDT2
Transmission oil capacity
66.4 qt (62.8 L)
Transmission Comparison Charts
Forward speed comparison
This model
25.5 mph
Average
13 mph
Low
5 mph
High
25 mph
Reverse speed comparison
This model
14.9 mph
Average
6 mph
Low
2.5 mph
High
12 mph
Transmission oil capacity comparison
This model
66.4 qt
Average
28 qt
Low
4 qt
High
70 qt
Kubota M128X Transmission Notes
Transmission type note
For the Kubota M128X, start with the transmission type: Hydrostatic. That tells you whether the tractor is more range/gear focused or easier stop-start driving focused
Forward / reverse speed note
The useful speed numbers are 25.5 mph (41 km/h) forward and 14.9 mph (24 km/h) reverse. That gives a better driving comparison than transmission type alone
Fluid and service note
For service work, the captured transmission fluid is Kubota Super UDT2 and the listed capacity is 66.4 qt (62.8 L). Confirm both in the manual before changing fluid
Buyer takeaway
If you are comparing tractors, judge the Kubota M128X from Hydrostatic and 25.5 mph (41 km/h), not horsepower alone. Transmission setup decides how the tractor actually drives
The Kubota M128X transmission is listed as Hydrostatic. That is the main drivetrain detail to check before comparing gears, ranges or speed.
Are the Kubota M128X gear counts listed?
This row does not show a clean fixed gear or range count for the Kubota M128X. On hydrostatic tractors, top speed and control feel may matter more than gear count.
Is the Kubota M128X transmission speed good?
The captured travel speeds are 25.5 mph (41 km/h) forward and 14.9 mph (24 km/h) reverse. That is enough to compare it against similar tractors for mowing, transport and yard work.
What transmission fluid does the Kubota M128X use?
The captured fluid spec is Kubota Super UDT2, with transmission oil capacity listed as 66.4 qt (62.8 L). Confirm the exact fluid in the manual before servicing.
What should I check before buying a used Kubota M128X?
Confirm the exact transmission type, test forward and reverse operation, check for fluid leaks, and verify any service history for the transmission or transaxle.
Official information note
Mistakes do happen. Tractor transmission specs can change by year, market, serial range, transaxle, trim and option package. Please check the operator manual, service manual, build sheet and official kubotausa.com website for official transmission information before servicing or buying parts.
