A snowmobile has a body frame. A front frame is coupled with the body frame. The front frame is made of a casting. A pair of swing units are swingably supported by the front frame at first ends of the swing units. A pair of skis are supported by the swing units at second ends of the skies. A pair of suspension assemblies are connected with the front frame at first ends of the suspension assemblies. The suspension assemblies also are connected with the second ends of the swing units at second ends of the suspension assemblies.