In the spring of 2006, Agco announced its first articulated tractor, the Challenger MT900 series. However, it did not enter production until the summer of 2007. The technology was largely consistent with the MT800B series tracked tractors. The external dimensions were generous compared to both tracked models and competitors. The MT945B had more power than the equivalent tracked tractor, and the smallest model was not introduced to the lineup. The engines were 14.6- and 18.1-liter Caterpillars, and the transmission was also Caterpillar's 16+4 powershift. The articulated frame was said to be the most robust on the market. The turning radius was reported as 8.4 meters measured from the centerline of the tires. The standard tires were 710/70R42 dual wheels. The front axle lock was not included, at least not as a standard feature. The three-point hitch was only 10 tons instead of the tracked version's 14 tons. The axles were manufactured by GIMA.

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