Which has more horsepower, the John Deere 4066M or the Kioti RX6640P?

The Kioti RX6640P leads on engine hp at 66.4 hp hp, compared to 65 hp hp for the John Deere 4066M.

Which has more PTO horsepower, the John Deere 4066M or the Kioti RX6640P?

The Kioti RX6640P leads on pto hp at 54.9 hp hp, compared to 51.9 hp hp for the John Deere 4066M.

Which has more loader lift capacity, the John Deere 4066M or the Kioti RX6640P?

The Kioti RX6640P leads on loader lift at 3,300 lb lb, compared to 2,396 lb lb for the John Deere 4066M.

Which has more three-point hitch lift capacity, the John Deere 4066M or the Kioti RX6640P?

The Kioti RX6640P leads on 3-pt lift (24 in) at 4,327.7 lb lb, compared to 2,500 lb lb for the John Deere 4066M.

John Deere 4066M vs Kioti RX6640P

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

Across 8 measurable specs, the Kioti RX6640P leads 8 categories to 0. Machine pages: John Deere 4066M and Kioti RX6640P.

Want a third or fourth machine in the mix? Open this matchup in the comparison tool and add up to two more.

Category Verdict

Spec	John Deere 4066M	Kioti RX6640P
Engine HP (hp)	65 hp	▲ 66.4 hp
PTO HP (hp)	51.9 hp	▲ 54.9 hp
Weight (lb)	—	6,051 lb
Loader Lift (lb)	2,396 lb	▲ 3,300 lb
3-Pt Lift (24 in) (lb)	2,500 lb	▲ 4,327.7 lb
Lift Height (in)	112.1 in	▲ 127.1 in
Breakout Force (lbf)	3,853 lbf	▲ 5,875.3 lbf
Hydraulic Flow (gpm)	17.4 gpm	▲ 20.6 gpm
Travel Speed (mph)	18.6 mph	▲ 22 mph

The headline numbers at a glance.

John Deere 4066MKioti RX6640P

Engine HPhp

65 hp

▲66.4 hp

PTO HPhp

51.9 hp

▲54.9 hp

Weightlb

—

6,051 lb

Loader Liftlb

2,396 lb

1,764 lb

▲3,300 lb

At pivot@ 19.7 in ahead of pivot

3-Pt Lift (24 in)lb

2,500 lb

▲4,327.7 lb

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Full Spec Sheet

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

Spec	John Deere4066M	KiotiRX6640P


PTO Power	51.9 hp	54.9 hp
Alternator	75 A, 12 V	Not Published
Air Cleaner	Dual element (dry type with safety element)	Not Published
Engine Type	Diesel	In-Line Vertical, Water-cooled 4-Cycle Turbo Diesel, CRDI (4H243T)
Fuel System	High-pressure common rail direct injection	Common Rail Direct Injection (CRDI)
Displacement	127.6 in³	148.6 in³
No. of Cylinders	4	4
Rated Engine Speed	2600 rpm	2600 rpm
Cooling System Type	Liquid (water pump)	Water-cooled
Engine Manufacturer	Yanmar	KIOTI
Engine Power (Gross)	65 hp @ 600 rpm	66.4 hp
Engine Emissions Constraints	Tier 4	Tier 4

Weight with ROPS and Loader	Not Published	6,051 lb
Weight with Cab and Loader	Not Applicable	Not Applicable

Warranty Length & Coverage	6-year/2,000-hour powertrain; 2-year/2,000-hour basic (full machine)	Tractors (Non-Commercial Application): 24 months parts & labor; Extended (Non-Commercial, driveline/powertrain): 48 months parts & labor; Limited time: eligible units receive total 6 years (72 months) extended powertrain warranty coverage.

Pump Type	Dual gear	Tandem Gear
Steering Flow	5.7 gpm	8.2 gpm
Implement Flow	10.2 gpm	12.4 gpm
Total Hydraulic Flow	17.4 gpm	20.6 gpm
Hydraulic System Type	Open center	Open center
Rear Remote Hydraulic Flow	Not Published	Not Published
Overall Hydraulic Pump Flow	17.4 gpm	20.6 gpm
No. of Optional Remote Valves	Up to 6 rear remotes	1
No. of Standard Remote Valves	Not Published	1

PTO Rear	540 rpm	540 / 540E rpm
PTO Type	Independent (electrohydraulic)	Independent
Lift Control Type	Position control	Electronic Control
Hitch Lift Capacity	3,130 lb	5,584.3 lb
Mid-PTO Availability	Available	Not Applicable
Category, 3-Point Hitch	Category 1 (limited)	Category II
Hitch Lift Capacity (at 24”)	2,500 lb	4,327.7 lb

R3 Turf - Rear	44X18.00-20 (4PR)	Not Applicable
R3 Turf - Front	27X10.50-15	Not Applicable
Tire Size & Options	R1 Bar, R3 Turf, R4 Industrial	R1 Agricultural, R4 Industrial
R4 Industrial - Rear	420/85D24	18.4-24/8
R4 Industrial - Front	260/70D16.5	12.5/80-18
R1 Agricultural - Rear	13.6-28 (6PR) or 380/70R28 or 360/80R28	16.9-30
R1 Agricultural - Front	8.00-16 (10PR) or 280/70R16 or 250/75R16	11.2-24

Coolant Capacity	Open station: 6.8 qt; Cab: 8.0 qt (if equipped)	2.51 gal
Crankcase Capacity	5.6 qt (with filter)	2.83 gal
Fuel Tank Capacity	Open station: 15.0 gal; Cab: 14.7 gal (if equipped)	26.40 gal
Front Axle Fluid Capacity	5.3 qt	2.60 gal
Transmission / Hydraulic System Capacity	12.5 gal	11.75 gal

Loader Lift Height	112.1 in	127.1 in (to pivot pin)
Loader Breakout Force	At pivot: 3,853 lbf; @ 19.7 in ahead of pivot: 2,902 lbf	5,875.3 lb (at pivot pins)
Quick Attach Loader System	Rigid mounted with parking kit available; Parking stand kit BW16127 (parkable)	Built-in parking stand; designed to be quickly and easily attached and detached.
Loader Lift Capacity (Full Height)	At pivot: 2,396 lb; @ 19.7 in ahead of pivot: 1,764 lb	3,300.0 lb (to full height at pivot pins)

Clutch	Wet; wet clutch disk diameter 5.08 in	Wet Disc
No. of Speeds	PowrReverser: 12F/12R; eHydro: Infinitely-variable, 3 range	12 forward / 12 reverse
Transmission Type	Standard: 12/12 PowrReverser (PRT); Optional: eHydro (eHST), 3-range hydrostatic	Manual: Power Shuttle
Max Travel Speed (Forward)	18.6 mph	22.01 mph
Max Travel Speed (Reverse)	18.6 mph	21.92 mph
Differential Lock & Limited Slip Options	Differential lock: Yes	Rear differential lock (standard)

Brakes	Multi-plate wet disc	Wet Multi Disc
Steering	Hydrostatic power steering	Hydrostatic Power Steering
Frame Type	ROPS - Fixed	Not Published
Front Axle Type	Mechanical front wheel drive (MFWD) - Standard; engagement On-the-Go	Not Published
Drawbar Capacity	Max vertical load 1103 lb	Not Published
Front Axle Rating	(Continuous) 3307 lb	Not Published
Seat Suspension & Adjustability	Optional mechanical suspension seat; adjustable weight 52-275.6 lb (115-275 lb); fore/aft adjustment; flips forward	Mechanical Suspension Seat

Wheelbase	73.0 in	85.40 in
Overall Width	78.2 in	82.10 in
Ground Clearance	Front axle: 15.6 in; Drawbar support: 14.8 in	15.70 in
Height to Top of ROPS	93.7 in	114.80 in
Height to Top of Cab Model	Not Applicable	Not Applicable
Height to Top of ROPS (folded)	69.5 in	Not Published
Min. Turn Radius without Brakes	17.1 ft (5.2 m)	12.80 ft (3.90 m)
Overall Length with 3-Point Hitch	130.6 in	150.30 in