Head to head · Four-Wheel Drive

CaseIH STX450 vs Challenger MT855

CaseIH STX450 Tractor
CaseIHModel A

CaseIH STX450

Four-Wheel Drive

power
450 hp
displacement
912 ci
Cylinders
6
Forward gears
16
Full STX450 specs
Image not recorded
ChallengerModel B

Challenger MT855

Four-Wheel Drive

power
450 hp
displacement
893 ci
Cylinders
6
Forward gears
16
Full MT855 specs
CaseIHCaseIH STX450
vs
ChallengerChallenger MT855

How they compare

Headline specs vs. the whole Four-Wheel Drive

n = 71–162

Engine Power

= Effectively tied
STX450450 hp
MT855450 hp
Median Four-Wheel Drive Tractor375 hp

STX450 is in the 64th percentile; MT855 is in the 64th · 162 models

Engine Displacement

▲ STX450 higher · +19 ci (+2%)
STX450912 ci
MT855893 ci
Median Four-Wheel Drive Tractor826 ci

STX450 is in the 78th percentile; MT855 is in the 69th · 152 models

Cylinders

= Effectively tied
STX4506
MT8556
Median Four-Wheel Drive Tractor6

STX450 is in the 50th percentile; MT855 is in the 50th · 159 models

Forward Gears

= Effectively tied
STX45016
MT85516
Median Four-Wheel Drive Tractor16

STX450 is in the 50th percentile; MT855 is in the 50th · 146 models

STX450 (A)MT855 (B)Median Four-Wheel Drive Tractor

Full comparison

Every spec, side by side

General Information

SpecCaseIH STX450Challenger MT855Difference
ManufacturerCaseIHChallenger—
ModelSTX450MT855—
CategoryFour-Wheel DriveFour-Wheel DriveSame

Engine

SpecCaseIH STX450Challenger MT855Difference
ManufacturerCumminsCaterpillar—
ModelQSX 15C16—
Power Output450hp450hpSame
Rated RPM2,000RPM2,100RPM▲ MT855+100 RPM · +5%
Cylinders66Same
Displacement912ci893ci▲ STX450+19 ci · +2%
Bore5.4in5.4inSame
Stroke6.7in6.5in▲ STX450+0.2 in · +3%

Transmission

SpecCaseIH STX450Challenger MT855Difference
TypeFull Power ShiftFull power shiftSame

Dimensions & Weight

SpecCaseIH STX450Challenger MT855Difference
Length318in266in▲ STX450+52 in · +20%
Width44in142in▲ MT855+98 in · +223%
Height152in139in▲ STX450+13 in · +9%
Operating Weight39,325lb41,000lb▲ MT855+1,675 lb · +4%

Hydraulics

SpecCaseIH STX450Challenger MT855Difference
System TypePressure Flow Compensated (PFC)Closed center load sensing—
Steering TypeHydrostatic PowerNot recorded—

Power Take-off (PTO)

SpecCaseIH STX450Challenger MT855Difference
Type1000 (1.75)Not recorded—

Hitch & Towing

SpecCaseIH STX450Challenger MT855Difference
Hitch TypeIVN/IIIIVN—
Hitch PositionRearRearSame

Chassis & Drive

SpecCaseIH STX450Challenger MT855Difference
Steering TypeHydrostatic PowerNot recorded—
Brake TypeNot recordedHydraulic wet disc—

Electrical

SpecCaseIH STX450Challenger MT855Difference
Starter TypeElectricElectricSame

Category context

Both models against the field

Engine Power

median 375 hp
A · 64th percentile (450 hp)B · 64th percentile (450 hp)

Engine Displacement

median 826 ci
A · 78th percentile (912 ci)B · 69th percentile (893 ci)

Cylinders

median 6
A · 50th percentile (6)B · 50th percentile (6)

Forward Gears

median 16
A · 50th percentile (16)B · 50th percentile (16)

Operating Weight

median 37,428 lb
A · 55th percentile (39,325 lb)B · 61st percentile (41,000 lb)
A · STX450B · MT855Median Four-Wheel Drive Tractor
Full spec pageCaseIH STX450Full spec pageChallenger MT855