Compare/Kubota B2920 vs Kubota KB21X

Kubota B2920 vs Kubota KB21X

Verdict: Kubota B2920 vs Kubota KB21X

The Kubota B2920 and the Kubota KB21X are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 21 hp. Kubota B2920 is the lighter machine (704 kg vs 1,554 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Kubota KB21X holds more fuel (26.9 L vs 25 L) for longer stints between fills. Kubota KB21X is the newer design (2009 vs 2008). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

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

21 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

KubotaReference

liquid-cooledReference

Sequential hydraulically-shifted transmission. Twelve forward gears with three ranges. Tractor must be stopped, and clutch used, to shift ranges.Reference

Original price

$14,753 (2011)Reference

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Differential lock

rear standardReference

—

Steering

hydrostatic powerReference

—

Engine

21.6 kWReference

15.4 kWReference

Displacement

1.3 LReference

1.1 LReference

Bore/Stroke

79 x 89 mmReference

78 x 78 mmReference

Power

21.6 kWReference

15.4 kWReference

Air cleaner

dual paper elementsReference

—

Rated RPM

2800Reference

2600Reference

Starter volts

12Reference

Oil capacity

15.1 LReference

—

Coolant capacity

4.4 LReference

—

Fuel Type

dieselReference

No of Cylinders

3 CylinderReference

3 cylinderReference

Rated engine speed

2,800 rpmReference

2,600 RPMReference

Bore and stroke

3.1x3.5 inchesReference

3.07x3.09 inchesReference

Cooling system

liquid-cooledReference

ROPS Fuel tank

—

26.9 LReference

Cab Fuel tank

—

21.2 LReference

Starter

—

electricReference

Transmission

Gears

infinite forward and reverse (3-range)Reference

36 forward and 24 reverseReference

Transmission Type

HSTReference

PowershiftReference

forward and reverse options

hydrostatic - infinite (3-range)F and infinite (3-range)RReference

9 F and 9 R | Power Shift : 36 F and 24 RReference

Wheel Drive

4WDReference

ROPS gear

—

704 kgReference

Cab gear

—

860 kgReference

Clutch

—

dry discReference

Transmission

—

GlideshiftReference

PTO & Hydraulics

PTO (claimed)

15.7 kWReference

—

Hydraulic system

15.1 LReference

—

Type

hydrostaticReference

power shiftReference

Capacity

15.1 LReference

68.5 ciReference

Valves

1 or 2Reference

—

Pump flow

17.8 lpmReference

—

Total flow

31.4 lpmReference

—

Steering flow

13.6 lpmReference

—

Rear Type

1Reference

0Reference

Rear lift (at ends)

615 kgReference

—

Rear lift (at 24"/610mm)

479 kgReference

—

Rear PTO

liveReference

—

Rear PTO Type

540/960Reference

540 (1.375)Reference

Engine RPM

2500@2750Reference

-662@2600Reference

Mid PTO

optionalReference

—

Mid PTO Type

2500Reference

—

Capacities

Fuel

25.0 LReference

—

Fuel tank

25 LReference

26.9 LReference

Crankcase oil volume

3.2 qtsReference

—

Dimensions

Wheelbase

156 cmReference

136.4 cmReference

Weight

704 kgReference

1554 to 1951 poundsReference

Front tire

7-12Reference

6.00-12Reference

Rear tire

11.2-16Reference

9.5-20Reference

Standard tires (ag)

Front: 7-12. Rear: 11.2-16Reference

Front: 6.00-12. Rear: 9.5-20Reference

Optional tires (ag)

Front: 6.00-12. Rear: 9.5-16Reference

—

Lawn/turf front

22x8.50-12Reference

—

Lawn/turf rear

31x15.50-15Reference

—

Industrial front

23x8.50-12Reference

—

Industrial rear

12-16.5Reference

—

Length

241 cmReference

—

Width

124 cmReference

—

Ground clearance

32 cmReference

35 cmReference

Front tread

81 cmReference

85 cmReference

Rear tread

94 cmReference

—

ROPS Wheelbase

—

135 cmReference

Cab Wheelbase

—

136 cmReference

ROPS Length

—

234 cmReference

Cab Length

—

247 cmReference

ROPS Width

—

113 cmReference

Cab Width

—

120 cmReference

Height (ROPS)

—

189 cmReference

Height (cab)

—

196 cmReference

ROPS Rear tread

—

88 cmReference

Cab Rear tread

—

97 cmReference

ROPS Glideshift

—

729 kgReference

Cab Glideshift

—

884 kgReference

Kubota B2920 attachments

Electrical

Ground

negativeReference

Charging system

alternatorReference

—

Charging amps

40 (optional)Reference

—

Battery volts

12Reference

Attachment overview

Kubota BH65 Backhoe

Backhoe type

Kubota BH65 BackhoeReference

—

Digging depth

203 cmReference

—

2-Foot flat digging depth

200 cmReference

—

8-Foot flat digging depth

143 cmReference

—

Reach from pivot

276 cmReference

—

Loading height

163 cmReference

—

Bucket force

1172 kgReference

—

Dipperstick force

765 kgReference

—

General

Make & Model

KubotaReference

Rollover protective structure

Two-post foldable ROPSReference

Two-post ROPS.Reference

Power

Max Power

29 hpReference

20.7 hpReference

PTO

PTO Power

21 hpReference

—

Rear PTO Power

AvailableReference

—

Rear PTO RPM

540 RPMReference

Mid PTO RPM

2,500 RPMReference

—

Engine Speed on Mid PTO speed

2,500@2,750 RPMReference

—

Engine Speed on Rear PTO speed

540@2,773 RPMReference

1,182@2,600 RPMReference

Steering & brakes

Brakes

wet discReference

mechanical wet discReference

Steering type

hydrostatic powerReference

powerReference

Hydraulics

Pump Rated Output (total)

8.3 gpmReference

—

Hydraulics Type

open centerReference

—

Remote Valves

1 or 2 ValvesReference

—

Steering & Implements flow

3.6 gpm (4.7 gpm)Reference

—

Rear Hitch category (SAE designation)

Category 1Reference

Category 0Reference

Rear Hitch maximum lift capacity

615.1 kgReference

—

Dimensions & weight

Overall Length

241.6 cmReference

247.9 cmReference

Overall Width

124.5 cmReference

120.9 cmReference

Overall weight

704.9 kgReference

Height Over Cab

—

196.1 cmReference

Height Over ROPS

—

190 cmReference

Wheels & tyres

Rear Wheel Type

11.2-16Reference

Ag: 9.5-20Reference

Rear wheel tread range

95 cmReference

97 cmReference

Front Wheel Type

7-12.Reference

Ag: 6.00-12Reference

Front Wheel tread range

81.5 cmReference

85.1 cmReference

Operator station

Cab Availability

AvailableReference

Variants

KB21X

—

wheeledReference

KB21X-PC

—

half-trackReference

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.