The 116 and 228 Claas Commandor CS were the models of Claas combines with full track undercarriage. This was in conjunction with Caterpillar. Cat supplied 3306 engines and the full track undercarriage to these machines for a successfull launch and model life, until the launch of the Cat lexion. The full track system was very effective and virtually everywhere. However, the ride factor was an issue (like a dozer) when traversing extremely rolling terraing. Thus, the release of the MTS system on the lexion tracked combines.