Challenger MT555B 2WD 2WD – specifications
Series: Other models
Build year not documented · Data origin: Directory data · sources
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The Challenger MT555B 2WD is a heavy-duty row-crop tractor from the manufacturer's MT series. Designed as a two-wheel-drive variant, this machine is intended for applications where high drawbar pull is the priority and four-wheel drive is not strictly necessary. The model belongs to the category of large field tractors and was developed for intensive tillage and the transport of heavy implements. The design emphasizes stability and high payload capacity to ensure productivity even under difficult conditions.
The tractor is powered by a six-cylinder diesel engine with a displacement of 6,600.7 cm³, equipped with a turbocharged and aftercooled system. At a rated speed of 2,200 rpm, the engine delivers a PTO power of 130 hp. This output is sufficient to pull large plows, cultivators, or seeders without overloading the engine. The empty weight of 6,803.9 kg ensures good traction in the field, while the ground clearance of 440.2 mm facilitates driving over obstacles. The lift capacity of 6,479 kg allows for the lifting of heavy front-mounted implements. With a fuel tank capacity of 370.2 l, long working intervals without refueling stops are possible.
Within the model range, the MT555B 2WD is positioned as a specialized solution for pure rear-wheel drive. Compared to four-wheel-drive variants in this class, it offers a simpler transmission with Auto Power function and a top speed of 40.2 km/h. The hydraulic performance, with a pump flow rate of 180.2 l/min, supports the operation of equipment with high oil demand. This configuration is particularly suitable for farms working on large, flat areas where the lower purchase price of a 2WD model outweighs the additional traction of a four-wheel-drive tractor.
Challenger – other models: the collective page of tractors outside the named ranges, from the compacts MT225 to MT295 through the wheeled MT425 to MT695 to the tracked MT700 and MT800, 17 to 471 kW, Caterpillar
This page gathers the Challenger tractors the register could not assign to a named range – the brand Caterpillar founded in 1987 with the Challenger 65, the first agricultural tracked tractor with rubber belts, and sold in 2002 to AGCO, which used the name until 2022 for a complete tractor programme. The type logic of the AGCO era: MT stands for the brand, the first digit for the range – MT200 the compacts of Iseki manufacture, MT300 and MT400 the small and medium ones, MT500 and MT600 the four- and six-cylinder wheeled tractors created as sister models of the Massey Ferguson 5400 to 8400 in Beauvais, MT700 and MT800 the rubber-tracked tractors from Jackson, Minnesota, MT900 the articulated ones – the following digits the power step and B, C, D and E the generations; 2WD and MFWD distinguish rear- and four-wheel drive. The engines are Caterpillar (C6.6, C15, C18) in the tracked and articulated tractors of the early years, AGCO Power (Sisu) in the later ones and Iseki in the compacts; the register span of 1.1 to 18.1 litres shows that breadth.
Read on 3 more paragraphs
The register lists here 99 versions with 16.8 to 470.5 kW from three- to seven-cylinders of 1,123 to 18,124 cm³, PTO outputs from 18 to 533 hp, lift capacities from 268 to 8,845 kg, unladen weights from 720 to 27,216 kg and lengths from 1,480 to 7,570 mm.
The Challenger MT700 and MT800 remained to the last the benchmark of the tracked tractor against which John Deere set its 8RT and 9RT and Case IH the Quadtrac; since 2022 the machines run as Fendt MT.
On used tracked tractors the condition of rubber belts, rollers and drive wheels (the most expensive item) counts, on all of them operating hours, engine and exhaust aftertreatment, powershift or stepless transmission, hydraulics and electronics; parts run through AGCO and, for the Cat engines, through Caterpillar.
Sources: SpecCodex register, model data: Challenger (weitere Modelle), Challenger (AGCO, Hersteller)
Technical data
Engine
| Engine model | C6.6 ACERTcorrect |
|---|---|
| Rated speed | 2,200 rpmcorrect |
| Cylinders | 6correct |
| Displacement | 6,600.7 cm³correct |
| Aspiration | Turbocharged and Aftercooledcorrect |
| Coolant capacity | 25.7 lcorrect |
Dimensions and weights
| Length | 4,840 mmcorrect |
|---|---|
| Width | 2,060.4 mmcorrect |
| Wheelbase | 2,892.6 mmcorrect |
| Ground clearance | 440.2 mmcorrect |
| Unladen weight | 6,803.9 kgcorrect |
Drivetrain and chassis
| Gearbox type | Auto Powercorrect |
|---|---|
| Top speed | 40.2 km/hcorrect |
Working data
| Lifting capacity | 6,479 kgcorrect |
|---|---|
| Pump flow | 180.2 l/mincorrect |
| Hydraulic oil capacity | 70 lcorrect |
| Fuel tank capacity | 370.2 lcorrect |
Other data
| PTO output | 130 hpcorrect |
|---|---|
| System voltage | 24 Vcorrect |
More machines with this engine (C6.6 ACERT, 12)
Frequently asked questions
How much does the Challenger MT555B 2WD weigh?
The unladen weight is 6,804 kg.
What engine does the Challenger MT555B 2WD have?
6 cylinders, 6,601 cm³ displacement.
How fast does the Challenger MT555B 2WD go?
Top speed is 40.2 km/h.
What is the PTO output of the Challenger MT555B 2WD?
PTO output is 130 hp.
How much does the rear linkage of the Challenger MT555B 2WD lift?
The rear linkage lifts 6,479 kg.
What are the dimensions of the Challenger MT555B 2WD?
4,840 mm × 2,060 mm.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 19 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: RitchieSpecs equipment specifications (retrieved August 2026) · Data sources and cross-checks
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