The Kubota GB135 has a hydrostatic transmission, with 6-speed gear, a top forward speed of 12.9 mph (20.8 km/h), and reverse speed of 6.2 mph (10 km/h). Service details captured: fluid Kubota Super UDT.
Transmission typeHydrostatic
Gears / ranges6-speed gear
Forward speed12.9 mph (20.8 km/h)
Transmission fluidKubota Super UDT
Kubota GB135 Transmission Specs
Transmission type
Hydrostatic
Gears / ranges / speeds
6-speed gear
Forward speed
12.9 mph (20.8 km/h)
Reverse speed
6.2 mph (10 km/h)
Transmission oil / fluid type
Kubota Super UDT
Transmission Comparison Charts
Forward speed comparison
This model
12.9 mph
Average
13 mph
Low
5 mph
High
25 mph
Reverse speed comparison
This model
6.2 mph
Average
6 mph
Low
2.5 mph
High
12 mph
Kubota GB135 Transmission Notes
Transmission type note
The transmission type is the headline spec here. On the Kubota GB135, the clean captured type is Hydrostatic
Gears and range note
The captured gears/ranges detail for the Kubota GB135 is 6-speed gear. Hydrostatic setups usually matter more for control feel than fixed gear count
Forward / reverse speed note
The useful speed numbers are 12.9 mph (20.8 km/h) forward and 6.2 mph (10 km/h) reverse. That gives a better driving comparison than transmission type alone
Fluid and service note
For service work, the captured transmission fluid type is Kubota Super UDT. The oil capacity was not cleanly captured in this row
Buyer takeaway
If you are comparing tractors, judge the Kubota GB135 from Hydrostatic, 6-speed gear, and 12.9 mph (20.8 km/h), not horsepower alone. Transmission setup decides how the tractor actually drives
The Kubota GB135 transmission is listed as Hydrostatic. That is the main drivetrain detail to check before comparing gears, ranges or speed.
What are the Kubota GB135 transmission gears or ranges?
The captured gears/speeds detail for the Kubota GB135 is 6-speed gear.
Is the Kubota GB135 transmission speed good?
The captured travel speeds are 12.9 mph (20.8 km/h) forward and 6.2 mph (10 km/h) reverse. That is enough to compare it against similar tractors for mowing, transport and yard work.
Is the Kubota GB135 transmission fluid listed?
Yes, the captured fluid type is Kubota Super UDT. Confirm the capacity in the operator manual before servicing.
What should I check before buying a used Kubota GB135?
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.
