The Kubota Z121S has a hydrostatic transmission, with Infinite forward and reverse and a top forward speed of 7 mph (11.3 km/h).
Transmission typeHydrostatic
Gears / rangesInfinite forward and reverse
Forward speed7 mph (11.3 km/h)
Kubota Z121S Transmission Specs
Transmission type
Hydrostatic
Gears / ranges / speeds
Infinite forward and reverse
Forward speed
7 mph (11.3 km/h)
Transmission Comparison Charts
Forward speed comparison
This model
7 mph
Average
13 mph
Low
5 mph
High
25 mph
Kubota Z121S Transmission Notes
Transmission type note
The Kubota Z121S’s captured transmission type is Hydrostatic. Use that before comparing speed, oil capacity or service parts
Gears and range note
The Kubota Z121S’s listed range/speed detail is Infinite forward and reverse. On hydrostatic tractors, this may describe ranges rather than old-school fixed gears
Forward / reverse speed note
The clean speed value found for the Kubota Z121S is 7 mph (11.3 km/h) forward
Buyer takeaway
If you are comparing tractors, judge the Kubota Z121S from Hydrostatic, Infinite forward and reverse, and 7 mph (11.3 km/h), not horsepower alone. Transmission setup decides how the tractor actually drives
The Kubota Z121S transmission is listed as Hydrostatic. That is the main drivetrain detail to check before comparing gears, ranges or speed.
What are the Kubota Z121S transmission gears or ranges?
The captured gears/speeds detail for the Kubota Z121S is Infinite forward and reverse.
What is the Kubota Z121S forward speed?
The Kubota Z121S forward speed is listed as 7 mph (11.3 km/h). Reverse speed was not cleanly captured in this row.
Is the Kubota Z121S transmission fluid capacity listed?
This row does not show a clean fluid capacity. Check the operator manual before doing a transmission or hydrostatic fluid change.
What should I check before buying a used Kubota Z121S?
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.
