LS Tractor MT122 vs Rural King RK21H

Every published spec for both machines, side by side. The verdict below is computed straight from the spec sheets, not opinion.

Across 9 measurable specs, the LS Tractor MT122 leads 5 categories to 3 (1 tied). Machine pages: LS Tractor MT122 and Rural King RK21H.

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Category Verdict

Spec	LS Tractor MT122	Rural King RK21H
Engine HP (hp)	21.5 hp	21.5 hp
PTO HP (hp)	15 hp	▲ 15.2 hp
Weight (lb)	1,433 lb	▲ 1,472 lb
Loader Lift (lb)	▲ 902 lb	617 lb
3-Pt Lift (24 in) (lb)	▲ 728 lb	679 lb
Lift Height (in)	▲ 72.6 in	72 in
Breakout Force (lbf)	▲ 1,836 lbf	1,285 lbf
Hydraulic Flow (gpm)	6.7 gpm	▲ 6.7 gpm
Travel Speed (mph)	▲ 8.7 mph	8.4 mph

The headline numbers at a glance.

LS Tractor MT122Rural King RK21H

Engine HPhp

▲21.5 hp

PTO HPhp

15 hp

▲15.2 hp

Weightlb

1,433 lb

▲1,472 lb

Loader Liftlb

▲902 lb

617 lb

3-Pt Lift (24 in)lb

▲728 lb

679 lb

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Full Spec Sheet

Every published spec, side by side, including the details the graphs above don't chart.

Spec	LS TractorMT122	Rural KingRK21H


Engine Manufacturer	Yanmar	Yanmar
Engine Model	3TNV76F	3TNM74F
Engine Type	3-cylinder, indirect injection (swirl chamber), water-cooled	Not Published
No. of Cylinders	3	3
Displacement	68.0 in³	60.6 in³
Rated Engine Speed	3000 rpm	3200 rpm
Engine Power (Gross)	21.5 hp	21.5 hp
PTO Power	15 hp	15.2 hp
Engine Emissions Constraints	Tier 4	Tier 4
Cooling System Type	Water-cooled	Water-cooled
Air Cleaner	Dry	Single dry
Fuel System	In-line injection pump	Indirect fuel injection
Alternator	40 A, 12 V	40 A, 12 V

Pump Type	Gear pump, transmission driven	Single gear pump with flow divider
Implement Flow	4.6 gpm	4.59 gpm
Steering Flow	2.1 gpm	2.11 gpm
Total Hydraulic Flow	6.7 gpm	6.71 gpm
Overall Hydraulic Pump Flow	6.7 gpm	6.71 gpm
Hydraulic System Type	Open center system, position control	Live, independent
Rear Remote Hydraulic Flow	Not Published	Not Published
No. of Standard Remote Valves	None	Not Published
No. of Optional Remote Valves	1 set (2 quick couplers, optional)	Not Published

Fuel Tank Capacity	6.6 gal	6.6 gal
Coolant Capacity	0.9 gal	3.7 qt
Crankcase Capacity	0.8 gal	2.1 qt
Transmission / Hydraulic System Capacity	3.0 gal (3.4 gal with front-end loader; 4.7 gal with front-end loader and backhoe)	3.6 gal
Front Axle Fluid Capacity	0.5 gal	2.6 qt

PTO Type	Independent (electro-hydraulic)	Independent
PTO Rear	Standard (540 rpm)	540 rpm
Mid-PTO Availability	Standard (2,500 rpm)	2,000 rpm
Category, 3-Point Hitch	Category I	Category I
Hitch Lift Capacity	992 lb	1,100 lb
Hitch Lift Capacity (at 24”)	728 lb	679 lb
Lift Control Type	Position control	Position

Transmission Type	Hydrostatic Drive	2-range hydrostatic
No. of Speeds	2 ranges	2 Range
Max Travel Speed (Forward)	8.70 mph	8.4 mph
Max Travel Speed (Reverse)	5.22 mph	Not Published
Clutch	N/A	Electro-hydraulic PTO clutch assembly (hydrostatic drive, no traction clutch)
Differential Lock & Limited Slip Options	Mechanical pedal type	4WD with differential lock

Frame Type	Not Published	Unit frame: engine, transmission and front axle support bolted together into a rigid assembly
Steering	Hydrostatic power steering	Hydrostatic power steering
Brakes	Wet, multi-disc	Wet disc
Seat Suspension & Adjustability	High-back seat, folding armrest, retractable seat belt, fore-aft adjustment	Suspension seat with armrests & retractable seat belt
Front Axle Type	Front wheel mechanical assist (4WD)	4WD, center-pivot reverse Eliot type
Front Axle Rating	Not Published	Not Published
Drawbar Capacity	Hitch: 882 lb vertical, 3,527 lb horizontal; drawbar with clevis: 772 lb vertical, 3,527 lb horizontal	Not Published

Overall Width	47 in	44.5 in
Wheelbase	56 in	53.1 in
Ground Clearance	Not Published	8.3 in
Min. Turn Radius without Brakes	7.87 ft	86.6 in
Height to Top of ROPS	87 in	86.6 in
Height to Top of ROPS (folded)	Not Published	Not Published
Height to Top of Cab Model	Not Published	Not Published
Overall Length	97 in (bumper to link)	94.2 in (with 3-point hitch)

Tractor Weight (Base)	1,433 lb	1,472 lb
Weight with ROPS and Loader	Not Published	Not Published
Weight with Cab and Loader	Not Published	Not Published

Tire Size & Options	Front 18x8.50-10, rear 26x12.0-12; offered in industrial or turf	Titan: R4 Industrial (Std), R3 Turf (Opt), R14 (Opt)
R1 Agricultural - Front	Not Published	n/a
R1 Agricultural - Rear	Not Published	n/a
R3 Turf - Front	18x8.50-10	18x8.5-10
R3 Turf - Rear	26x12.0-12	Not Published
R4 Industrial - Front	18x8.50-10	Not Published
R4 Industrial - Rear	26x12.0-12	Not Published

Quick Attach Loader System	LL1102: quick attachment (ISO 24410 attachments only), latch handle with latch pin	L72: skid-steer compatible quick-attach
Loader Model	LL1102; LL1700; LL1001	L72
Loader Lift Height	LL1001: 72.6 in (at pivot pin)	L72: 72 in (maximum lift height)
Loader Lift Capacity (Full Height)	LL1001: 902 lb (at pivot pin, maximum height)	L72: 617 lb (to full height)
Loader Breakout Force	LL1001: 1,836 lb (at pivot pin)	L72: 1,285 lb

Warranty Length & Coverage	6-year limited warranty	Government and non-institutional: basic 24 months or 2,000 hours, powertrain 96 months or 3,000 hours; all other use: basic 24 months or 2,000 hours, powertrain 36 months or 3,000 hours

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LS Tractor MT122 vs Rural King RK21H: Quick Answers

Which has more horsepower, the LS Tractor MT122 or the Rural King RK21H?: They are effectively tied: both machines are rated at 21.5 hp hp for engine hp.
Which has more PTO horsepower, the LS Tractor MT122 or the Rural King RK21H?: The Rural King RK21H leads on pto hp at 15.2 hp hp, compared to 15 hp hp for the LS Tractor MT122.
Which is heavier, the LS Tractor MT122 or the Rural King RK21H?: The Rural King RK21H leads on weight at 1,472 lb lb, compared to 1,433 lb lb for the LS Tractor MT122.
Which has more loader lift capacity, the LS Tractor MT122 or the Rural King RK21H?: The LS Tractor MT122 leads on loader lift at 902 lb lb, compared to 617 lb lb for the Rural King RK21H.
Which has more three-point hitch lift capacity, the LS Tractor MT122 or the Rural King RK21H?: The LS Tractor MT122 leads on 3-pt lift (24 in) at 728 lb lb, compared to 679 lb lb for the Rural King RK21H.

More Head-to-Heads

Category Verdict

Spec	LS Tractor MT122	Rural King RK21H
Engine HP (hp)	21.5 hp	21.5 hp
PTO HP (hp)	15 hp	▲ 15.2 hp
Weight (lb)	1,433 lb	▲ 1,472 lb
Loader Lift (lb)	▲ 902 lb	617 lb
3-Pt Lift (24 in) (lb)	▲ 728 lb	679 lb
Lift Height (in)	▲ 72.6 in	72 in
Breakout Force (lbf)	▲ 1,836 lbf	1,285 lbf
Hydraulic Flow (gpm)	6.7 gpm	▲ 6.7 gpm
Travel Speed (mph)	▲ 8.7 mph	8.4 mph

The headline numbers at a glance.

LS Tractor MT122Rural King RK21H

Engine HPhp

▲21.5 hp

PTO HPhp

15 hp

▲15.2 hp

Weightlb

1,433 lb

▲1,472 lb

Loader Liftlb

▲902 lb

617 lb

3-Pt Lift (24 in)lb

▲728 lb

679 lb

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Full Spec Sheet

Every published spec, side by side, including the details the graphs above don't chart.

Spec	LS TractorMT122	Rural KingRK21H


Engine Manufacturer	Yanmar	Yanmar
Engine Model	3TNV76F	3TNM74F
Engine Type	3-cylinder, indirect injection (swirl chamber), water-cooled	Not Published
No. of Cylinders	3	3
Displacement	68.0 in³	60.6 in³
Rated Engine Speed	3000 rpm	3200 rpm
Engine Power (Gross)	21.5 hp	21.5 hp
PTO Power	15 hp	15.2 hp
Engine Emissions Constraints	Tier 4	Tier 4
Cooling System Type	Water-cooled	Water-cooled
Air Cleaner	Dry	Single dry
Fuel System	In-line injection pump	Indirect fuel injection
Alternator	40 A, 12 V	40 A, 12 V

Pump Type	Gear pump, transmission driven	Single gear pump with flow divider
Implement Flow	4.6 gpm	4.59 gpm
Steering Flow	2.1 gpm	2.11 gpm
Total Hydraulic Flow	6.7 gpm	6.71 gpm
Overall Hydraulic Pump Flow	6.7 gpm	6.71 gpm
Hydraulic System Type	Open center system, position control	Live, independent
Rear Remote Hydraulic Flow	Not Published	Not Published
No. of Standard Remote Valves	None	Not Published
No. of Optional Remote Valves	1 set (2 quick couplers, optional)	Not Published

Fuel Tank Capacity	6.6 gal	6.6 gal
Coolant Capacity	0.9 gal	3.7 qt
Crankcase Capacity	0.8 gal	2.1 qt
Transmission / Hydraulic System Capacity	3.0 gal (3.4 gal with front-end loader; 4.7 gal with front-end loader and backhoe)	3.6 gal
Front Axle Fluid Capacity	0.5 gal	2.6 qt

PTO Type	Independent (electro-hydraulic)	Independent
PTO Rear	Standard (540 rpm)	540 rpm
Mid-PTO Availability	Standard (2,500 rpm)	2,000 rpm
Category, 3-Point Hitch	Category I	Category I
Hitch Lift Capacity	992 lb	1,100 lb
Hitch Lift Capacity (at 24”)	728 lb	679 lb
Lift Control Type	Position control	Position

Transmission Type	Hydrostatic Drive	2-range hydrostatic
No. of Speeds	2 ranges	2 Range
Max Travel Speed (Forward)	8.70 mph	8.4 mph
Max Travel Speed (Reverse)	5.22 mph	Not Published
Clutch	N/A	Electro-hydraulic PTO clutch assembly (hydrostatic drive, no traction clutch)
Differential Lock & Limited Slip Options	Mechanical pedal type	4WD with differential lock

Frame Type	Not Published	Unit frame: engine, transmission and front axle support bolted together into a rigid assembly
Steering	Hydrostatic power steering	Hydrostatic power steering
Brakes	Wet, multi-disc	Wet disc
Seat Suspension & Adjustability	High-back seat, folding armrest, retractable seat belt, fore-aft adjustment	Suspension seat with armrests & retractable seat belt
Front Axle Type	Front wheel mechanical assist (4WD)	4WD, center-pivot reverse Eliot type
Front Axle Rating	Not Published	Not Published
Drawbar Capacity	Hitch: 882 lb vertical, 3,527 lb horizontal; drawbar with clevis: 772 lb vertical, 3,527 lb horizontal	Not Published

Overall Width	47 in	44.5 in
Wheelbase	56 in	53.1 in
Ground Clearance	Not Published	8.3 in
Min. Turn Radius without Brakes	7.87 ft	86.6 in
Height to Top of ROPS	87 in	86.6 in
Height to Top of ROPS (folded)	Not Published	Not Published
Height to Top of Cab Model	Not Published	Not Published
Overall Length	97 in (bumper to link)	94.2 in (with 3-point hitch)

Tractor Weight (Base)	1,433 lb	1,472 lb
Weight with ROPS and Loader	Not Published	Not Published
Weight with Cab and Loader	Not Published	Not Published

Tire Size & Options	Front 18x8.50-10, rear 26x12.0-12; offered in industrial or turf	Titan: R4 Industrial (Std), R3 Turf (Opt), R14 (Opt)
R1 Agricultural - Front	Not Published	n/a
R1 Agricultural - Rear	Not Published	n/a
R3 Turf - Front	18x8.50-10	18x8.5-10
R3 Turf - Rear	26x12.0-12	Not Published
R4 Industrial - Front	18x8.50-10	Not Published
R4 Industrial - Rear	26x12.0-12	Not Published

Quick Attach Loader System	LL1102: quick attachment (ISO 24410 attachments only), latch handle with latch pin	L72: skid-steer compatible quick-attach
Loader Model	LL1102; LL1700; LL1001	L72
Loader Lift Height	LL1001: 72.6 in (at pivot pin)	L72: 72 in (maximum lift height)
Loader Lift Capacity (Full Height)	LL1001: 902 lb (at pivot pin, maximum height)	L72: 617 lb (to full height)
Loader Breakout Force	LL1001: 1,836 lb (at pivot pin)	L72: 1,285 lb

Warranty Length & Coverage	6-year limited warranty	Government and non-institutional: basic 24 months or 2,000 hours, powertrain 96 months or 3,000 hours; all other use: basic 24 months or 2,000 hours, powertrain 36 months or 3,000 hours

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LS Tractor MT122 vs Rural King RK21H: Quick Answers

Which has more horsepower, the LS Tractor MT122 or the Rural King RK21H?

They are effectively tied: both machines are rated at 21.5 hp hp for engine hp.

Which has more PTO horsepower, the LS Tractor MT122 or the Rural King RK21H?

The Rural King RK21H leads on pto hp at 15.2 hp hp, compared to 15 hp hp for the LS Tractor MT122.

Which is heavier, the LS Tractor MT122 or the Rural King RK21H?

The Rural King RK21H leads on weight at 1,472 lb lb, compared to 1,433 lb lb for the LS Tractor MT122.

Which has more loader lift capacity, the LS Tractor MT122 or the Rural King RK21H?

The LS Tractor MT122 leads on loader lift at 902 lb lb, compared to 617 lb lb for the Rural King RK21H.

Which has more three-point hitch lift capacity, the LS Tractor MT122 or the Rural King RK21H?

The LS Tractor MT122 leads on 3-pt lift (24 in) at 728 lb lb, compared to 679 lb lb for the Rural King RK21H.

LS Tractor MT122 vs Rural King RK21H

Category Verdict

Full Spec Sheet

LS Tractor MT122 vs Rural King RK21H: Quick Answers

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LS Tractor MT122 vs Rural King RK21H

Category Verdict

Full Spec Sheet

LS Tractor MT122 vs Rural King RK21H: Quick Answers

More Head-to-Heads