Metro 21 S/N 370,000-439,999 (Push Model Only) M216KA S/N 370,000-439,999 (2003)
Metro 21 S/N 370,000-439,999 (Self Propelled Model Only) M216KASP S/N 370,000-439,999 (2003) M216KASPC S/N 370,000-439,999 (2003)
Metro 21 S/N 440,000-509,999 (Honda Self Propelled) M216HSP S/N 440,000-509,999 (2004)
Metro 21 S/N 440,000-509,999 (Kaw Self Propelled) M216KASP S/N 440,000-509,999 (2004)
Metro 21 S/N 440,000-509,999 (Push Model Only) M216KA S/N 440,000-509,999 (2004)
Metro 21 S/N 510,000-599,999 M216HSP S/N 510,000-599,999 (2005) M216HSPC S/N 510,000-599,999 (2005) M216KA S/N 510,000-599,999 (2005) M216KASP S/N 510,000-599,999 (2005) M216KASPC S/N 510,000-599,999 (2005)
Metro 21 S/N 600,000-669,999 MPKA21 S/N 600,000-669,000 (2006) MSHN21 S/N 600,000-669,000 (2006) MSHN21B S/N 600,000-669,000 (2006) MSKA21 S/N 600,000-669,000 (2006) MSKA21B S/N 600,000-669,000 (2006)
Metro 21 S/N 670,000 & Up MPKA21 S/N 670,000 & Up (2007) MSHN21 S/N 670,000 & Up (2007) MSHN21B S/N 670,000 & Up (2007) MSKA21 S/N 670,000 & Up (2007) MSKA21B S/N 670,000 & Up (2007)
Metro 21 S/N 720,000 & Up MPKA21 S/N 720,000 & Up MSHN21 S/N 720,000 & Up MSHN21B S/N 720,000 & Up MSKA21 S/N 720,000 & Up MSKA21B S/N 720,000 & Up
Metro 21 S/N 790,000 & Up MPKA21 S/N 790,000 & Up MSHN21 S/N 790,000 & Up MSHN21B S/N 790,000 & Up MSKA21 S/N 790,000 & Up MSKA21B S/N 790,000 & Up
