In the summer of 2004, the power of the T-series engines was increased, and the T180 as well as the T120 were removed from the Finnish model range to make way for the M-series. The rear fenders were changed to be the same as those on the M-series, and the cab's sound insulation was improved. A new optional feature was cab suspension. The cab shown in the picture is equipped with TwinTrac rear steering systems. Standard tires also increased in size on the smallest models to 20.8R38, but the 18.4 tires returned again at the beginning of 2005. At the same time, Claas green and gold were removed from the color selection.

In the spring of 2004, Classic models were introduced to the T-series, which had the HiTech features and hydraulic electrical valves removed. The clutch was a traditional dry type and the direction change was mechanical. In Finland, the standard gear options were 36+36, and 12+12 without the creeper gear was also in the production program. The hydraulic pump was from the 6000/8000 series with a capacity of 73 l/min. The Classic's standard equipment omitted, among other things, the pillar exhaust pipe, the push-button clutch, and the toolbox. In the summer of 2004, the 155-horsepower T150 supplemented the model range. From the beginning of 2006, the T170 and T190 models were fitted with common rail engines and slightly increased power. The T190 received headland management as a standard feature.

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