Claas introduced the Tucano in autumn 2007 as the successor to the Medion and Mega series. The smaller 300-series threshing unit is based on the Medion, while the 400-series—with its acceleration roller—is derived from the Mega. Both series offered models with five and six straw walkers, each walker being equipped with a straw shaker. Unlike its predecessors, the Tucano used the same cutter bars as the Lexion. In addition to the basic model, there were 4.5 m and 5.4 m folding tables as well as length-adjustable Vario tables. The unloading auger is driven hydraulically.

The machines were powered by 6.4 L and 7.2 L Mercedes engines. Unlike earlier models, the engine was now positioned behind the grain tank, so filling the tank no longer caused issues with the rear axle load. Significant improvements were also made in the cab. All functions are monitored via the CEBIS display, which also includes threshing-drum monitoring. CEBIS is simpler than on the Lexion—threshing settings cannot be stored and electronic sieve adjustment is not included as standard. Other Lexion features, such as table tilt and Laser Pilot steering, are available as options. Automatic climate control is standard in the cab. The noise level is rated at 76 dB.

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