Head to head · Utility

David Brown 990 Selectamatic vs RK Tractors RK55

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RK TractorsModel B

RK Tractors RK55

Utility

power
55 hp
displacement
128 ci
Cylinders
4
Forward gears
16
Full RK55 specs
David BrownDavid Brown 990 Selectamatic
vs
RK TractorsRK Tractors RK55

How they compare

Headline specs vs. the whole Utility

n = 1,083–5,720

Engine Power

= Effectively tied
990 Selectamatic55 hp
RK5555 hp
Median Utility Tractor55 hp

990 Selectamatic is in the 50th percentile; RK55 is in the 50th · 5,383 models

Engine Displacement

▲ 990 Selectamatic higher · +67 ci (+52%)
990 Selectamatic195 ci
RK55128 ci
Median Utility Tractor183 ci

990 Selectamatic is in the 52nd percentile; RK55 is in the 30th · 5,580 models

Cylinders

= Effectively tied
990 Selectamatic4
RK554
Median Utility Tractor4

990 Selectamatic is in the 50th percentile; RK55 is in the 50th · 5,720 models

Forward Gears

▲ RK55 higher · +10 (+167%)
990 Selectamatic6
RK5516
Median Utility Tractor12

990 Selectamatic is in the 11th percentile; RK55 is in the 73rd · 4,941 models

990 Selectamatic (A)RK55 (B)Median Utility Tractor

Full comparison

Every spec, side by side

General Information

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
ManufacturerDavid BrownRK Tractors—
Model990 SelectamaticRK55—
CategoryUtilityUtilitySame

Engine

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
ManufacturerDavid BrownYanmar—
ModelNot recorded4TNV86T-CR—
Power Output55hp55hpSame
Rated RPM2,200RPM2,800RPM▲ RK55+600 RPM · +27%
Cylinders44Same
Displacement195ci128ci▲ 990 Selectamatic+67 ci · +52%
Bore3.9in3.4in▲ 990 Selectamatic+0.5 in · +15%
Stroke4in3.5in▲ 990 Selectamatic+0.5 in · +14%

Transmission

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
TypeGear type with dry disc clutchNot recorded—

Dimensions & Weight

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
Length126in141in▲ RK55+15 in · +12%
Width63.8in63.8inSame
Operating Weight5,104lbNot recorded—

Hydraulics

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
System TypeOpen centerNot recorded—
Steering TypeManualPower—

Power Take-off (PTO)

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
TypeTransmissionIndependent with electro-hydraulic clutch—
Speed 1540rpm540rpmSame
Speed 21,000rpmNot recorded—

Hitch & Towing

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
Hitch CategoryII/II—
Hitch PositionRearNot recorded—
Hitch Capacity2,000lb3,310lb▲ RK55+1,310 lb · +66%

Chassis & Drive

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WD4WD—
Steering TypeManualPower—
Brake TypeDifferential mechanical expanding shoeWet disc—

Electrical

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
Starter TypeElectricElectricSame

Capacities

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
Coolant3.7galNot recorded—

Operator Station

SpecDavid Brown 990 SelectamaticRK Tractors RK55Difference
TypeOpenTwo-post ROPS—

Category context

Both models against the field

Engine Power

median 55 hp
A · 50th percentile (55 hp)B · 50th percentile (55 hp)

Engine Displacement

median 183 ci
A · 52nd percentile (195 ci)B · 30th percentile (128 ci)

Cylinders

median 4
A · 50th percentile (4)B · 50th percentile (4)

Forward Gears

median 12
A · 11th percentile (6)B · 73rd percentile (16)

Length

median 137 in
A · 36th percentile (126 in)B · 56th percentile (141 in)
A · 990 SelectamaticB · RK55Median Utility Tractor
Full spec pageDavid Brown 990 SelectamaticFull spec pageRK Tractors RK55