Compare/Kubota B1121 vs Kubota B5100

Kubota B1121 vs Kubota B5100

Verdict: Kubota B1121 vs Kubota B5100

The Kubota B1121 and the Kubota B5100 are both tractors — here is how they stack up on the figures that matter. Kubota B1121 leads on rated power with 11 hp against 10 hp. Kubota B1121 is the lighter machine (600 kg vs 805 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Kubota B1121 holds more fuel (14.0 L vs 7.9 L) for longer stints between fills. Kubota B1121 is the newer design (2018 vs 1978). In short: choose the Kubota B1121 for outright pulling power, or the Kubota B5100 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Kubota

Fit score

Best match

Clear

Kubota

Fit score

Best match

Clear

Rated power

11 hp

10 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

KubotaReference

liquid-cooledReference

Three gears, plus reverse, in two ranges.Reference

Differential lock

mechanical rearReference

Engine

Fuel tank

14.0 LReference

7.9 LReference

Engine (net)

8.0 kWReference

—

Displacement

0.5 LReference

Bore/Stroke

67 x 68 mmReference

67 x 70 mmReference

Rated Power (net)

8.0 kWReference

—

Air cleaner

dry elementReference

—

Rated RPM

3000Reference

Starter

electricReference

—

Starter volts

12Reference

Engine

—

8.9 kWReference

Power

—

8.9 kWReference

Pre-heating

—

glow plugsReference

Starter power

—

0.8 kWReference

Coolant capacity

—

3.0 LReference

Oil capacity

—

8.5 LReference

Oil change

—

75 hReference

Transmission

Type

gearReference

unsynchronized gearReference

Gears

6 forward and 2 reverseReference

Clutch

—

dry discReference

PTO & Hydraulics

Pump flow

7.9 lpmReference

12.0 lpmReference

Rear Type

IReference

Rear lift (at ends)

430 kgReference

—

Rear PTO Type

540 (1.375)Reference

540/1000Reference

PTO (claimed)

—

7.5 kWReference

Rear lift

—

136 kgReference

Rear PTO

—

transmissionReference

Front PTO Type

—

3000Reference

Dimensions

Wheelbase

127 cmReference

118 cmReference

Weight

600 kgReference

805 to 893 poundsReference

Front tire

5-12Reference

4.00-9Reference

Rear tire

8-16Reference

7.00-16Reference

Standard tires (ag)

Front: 5-12. Rear: 8-16Reference

—

Length

235 cmReference

181 cmReference

Width

93 cmReference

92 cmReference

Height (ROPS)

221 cmReference

—

Ground clearance

24 cmReference

—

Front tread

76 to 86 cmReference

—

Rear tread

75 to 100 cmReference

63/73 cmReference

Ag front

—

4.50-10 (4WD)Reference

Ag rear

—

7.00-16Reference

Lawn/turf front

—

18x6.50-8Reference

Lawn/turf rear

—

27x8.50-15Reference

Height (steering wheel)

—

112 cmReference

2WD Weight

—

365 kgReference

4WD Weight

—

405 kgReference

4WD Clearance (front axle)

—

21 cmReference

2WD Clearance (rear axle)

—

26 cmReference

2WD Front tread

—

66 cmReference

4WD Front tread

—

67 cmReference

Kubota B1121 attachments

Electrical

Ground

negativeReference

Charging system

alternatorReference

—

Battery volts

12Reference

Battery AH

—

35Reference

Variants

B5100DT

—

4WDReference

B5100E

—

2WDReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.