IS-4M
Tier 0 · ussr · heavy · Post War
About
Around the same time that the IS-3 was being developed, the Design Bureau of the Chelyabinsk Kirov Plant was working on another upgrade to the IS-2: Object 701, later known as IS-4. The IS-4 kept the IS-2’s 122mm rifled gun. Compared to the IS-3, it had a longer hull fitted with an extra set of road wheels, thicker armor on the hull’s sides, and a more powerful 690-hp engine. The low mobility of the IS-4 led to fewer than 300 units being produced, none of which saw battle during the Cold War.
Survivability
Hit points
2,100
View range
415 m
Signal range
470 m
Engine fire chance
15%
Armor (mm)
Front
Sides
Rear
Hull
150
160
100
Turret
250
200
170
Gun · 122 mm M62-T2U
Caliber
122 mm
Rate of fire
4.96 rpm
Reload
12.1 s
Aim time
2.7 s
Dispersion @ 100 m
0.38 m
Gun arc
6° / 16°
Traverse
26°/s
Ammo
40
Mobility
Top speed
44 km/h
Reverse
15 km/h
Engine
750 hp
Power/weight
12.5 hp/t
Hull traverse
24°/s
Turret traverse
20°/s
Shells
ARMOR_PIERCING_CR
440 dmg (330–550)
225 mm pen (169–281)
ARMOR_PIERCING_CR
440 dmg (330–550)
265 mm pen (199–331)
HIGH_EXPLOSIVE
550 dmg (413–688)
61 mm pen (46–76)
Marks of Excellencesample size 83 · updated 5/23/2026
1 mark
2,027
avg damage
2 marks
3,016
avg damage
3 marks
3,575
avg damage