For models equipped with air suspension, please refer to the heavy-duty listings for details. This applies to M2 100, M2 106, and M2 112 models from 2003 to 2022, as well as S2 (TRANSIT-LINER commercial bus) and C2 (SAF-T-LINER school bus) chassis from 2004 to 2022.
Three types of suspensions are utilized, including one full taper and two multileaf configurations. Type 1 consists of full taper suspensions with eyelets at both ends of the springs. All first stages are uniform within each design family, and these designs are interchangeable in pairs.