Vehicle frame for a tracked vehicle

A tracked amphibious vehicle having a vehicle frame and a pair of track assemblies attachable to a respective side of said vehicle frame, said vehicle frame being arranged to support a vehicle cab and an engine configuration, characterized in that said vehicle frame is arranged to receive said cab via a hinge so as to allow tilting of said cab about said hinge between a closed position and an open position, said vehicle frame comprising a pair of separated longitudinal wall elements extending in the longitudinal direction of the tracked vehicle and a bottom element connecting said pair of longitudinal wall elements so as to form a space for supporting and housing said engine configuration, wherein said space becomes accessible when the cab is in said open position, wherein said vehicle frame further comprises an extension frame forming an extension in a substantially vertical direction, wherein said extension frame is wedge-shaped so that the extension frame has a decreasing vertical extension in direction from the rear portion to a front portion of the vehicle frame, said vehicle frame is configured to have a lateral extension on its respective side ending prior to or substantially at the level of the a respective track of the pair of track assemblies when assembled to the vehicle frame so that no portion of the vehicle frame extends laterally passed the respective track of said pair of track assemblies so as to allow easy access to said space.