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Armoured vehicles1982–present
armored personnel carrier
CM21 armored vehicle is documented in the equipment reference catalogue originating in Taiwan. It was built by ROC Armored Vehicle Development Center. Reported operators include Republic of China Armed Forces.
TaiwanTaiwan
1982–present
Republic of China Armed Forces
ROC Armored Vehicle Development Center
1970s
ROC Armored Vehicle Development Center
1980s
Over 1,000 (all variants)
5 variants (see variants )
12.7 tonnes (14.0 short tons ; 12.5 long tons ) (without weapons)
4.863 meters (15 ft 11.5 in)
2.686 meters (8 ft 9.7 in)
2.5 meters (8 ft 2 in)
2
12
Aluminum hull Spaced Armor filled with Polyurethane on front and rear
M2 Browning machine gun
Mk 19 automatic grenade launcher 107 millimeters (4.2 in)/ 120 millimeters (4.7 in) mortar (CM22) 81 millimeters (3.2 in) mortar (CM23) BGM-71 TOW missile (CM25) 8 smoke grenade launcher (CM21, 22, 23, 26) 6 smoke grenade launcher (CM25)
Perkins TV8-640 turbodiesel Detroit Diesel 6V53 diesel engine 210 hp (160 kW)
22.36 hp/t
Allison TX100-1 automatic gearbox three forward gears, one reverse gear
Torsion bar suspension , five road wheels
550 kilometers (300 mi)
66 km/h
The standard version of CM21 is an armored personnel carrier (APC) that can carry up to 12 soldiers. It is largely the same as the basic M113 and inherits the same engine and transmission from the source design, but the welded aluminum alloy hull armor is further augmented with spaced armour at the front and the sides, the cavity within the spaced armor being filled with polyurethane to absorb the energy of incoming projectiles.
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | approved |
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 4.863 m | Wikipedia contributors | superseded |
CM21 armored vehicle equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
TaiwanLower-bound count for CM21. Service scope: Republic of China Army; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Retired, wholly reserve and on-order rows are excluded; the reported count retains any explicitly mixed stock scope in the quoted row. Count column(s): in service: 1025+ CM21. Origin: United States Taiwan. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.