Here is the translation of the provided Finnish text into English:

The large 230-series Axial-Flows were replaced by the 240-series for the 2015 season. The engine of the largest model was now 16 liters. Power was about 50 hp more than in the corresponding earlier models. Suspended track units were now also available. The new headers introduced a couple of years earlier remained unchanged, but a 12.5-meter header was now available as a new option; a 13.7-meter header followed a couple of years later. The grain tank in the two largest models was now 14,400 liters. The cab was also the same as in the standard and Luxury models introduced a couple of years earlier. The rotor length had been slightly increased to 264 cm.

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