- Yes
- No
- with the side skirts and add-on applique armor on the turret
- without the side skirts and add-on applique armor on the turret
- with just the side skirts
- with just the add-on applique armor on the turret
- i voted no
AMX-13/105 Retrofit
Retrofit's plans (modifications and changes)
Why is it called the Yonkav 2?
The tank is often called Yonkav 2 because that’s the name of the cavalry battalion that uses the tank, Batalyon Kavaleri 2/Turangga Ceta (Cavalry Battalion 2 in English). Turangga Ceta is Javanese which means white horse
Now, this battalion has another name which might be the origin of the unofficial tank name :
Batalyon Kavaleri 2/Tank
The tank there, is part of the battalion’s name, rather than a designation for a vehicle. Its likely that people mistake the name of battalion for the name of the tank. The yonkav 2 name sticks, as it continues to be the unofficial name used. Other sources do mention the tank only as AMX-13/105 Retrofit without an actual name of the Battalion.
Indonesia operated three different versions of the retrofitted AMX-13s:
AMX-13/75 Modèle (Mle) 51 (SM1)
AMX-13/105 Modèle (Mle) 58 (SM1) (Standard hull, CN-105-57 or CN-105-G1 gun mounted on FL-12 turret)
PINDAD AMX-13/105 Retrofit (Reworked hull, JT-1 turret, CN-105-G1 gun)
The tank has three different armor modules, one with appliqué armor array and side skirts, one just with the side skirts, and one without both
With both
Only with the side skirts
Without both
A. Background
Details
B. Specifications
Details
General Specifications
Changes on the hull
- For the hull, the changed parts are the engine cover and a reworked upper frontal glacis at an angle of 15° (degrees), while the angle of the lower glacis is unknown, it seems to be around ≈50-70°, but could be more, as the angles on the pictures are quite deceptive
Terminology : CHA = Cast Homogenous Armor | RHA = Rolled Homogenous Armor
Hull Armor
- Though exact armor values are unknown, The basis is the AMX-13 chassis, so the armor thickness can be presumed as the same, or at least similar to the base AMX-13/105 Mle 58.
- All hull parts are RHA
- 20mm side
- 15mm back
- 10mm roof
- 5mm RHA liners inside the hull
- There are some images of the thickness of the front glacis, so based on the images, I speculate that it might have
- 20mm upper glacis (?) at 15°
- 20-40mm lower glacis (?) at ≈50-70° (?)
Turret Armor
- Turret armor is the same as the JT-1 turret found on the SK-105A2
- CHA on the front-face and the entire lower part of the turret, as well as the gun mantlet, while the rest of the upper part is RHA (sides, back, roof, under ammo)
- 20-40mm front
- 40mm mantlet
- 20-40mm side
- 10-20mm rear
- 10mm roof and under
- The add-on applique armor effectiveness is unfortunately unknown
Cupola Armor
- CHA on the Cupola
- 10-20mm surrounding the entire part
Engines
there are two different upgraded engines from the SM1 version mentioned by sources, though its mentioned that the tank can go up to 60-70kmph (37-46 mph)
-
Navistar 400hp turbo diesel engine (exact model is unknown, likely to be some versions of the maxxforce engine, as one source mentioned that the engines has stopped being produced)
-
Cummins 375hp diesel engine with an automatic allison transmission (this report mentions an automatic transmission as well)
- Transmission doesn’t seem to be upgraded from the SM1, so its most likely the automatic ZF 5WG-180 transmission, with 5 forward gear and 2 in reverse
Characteristics:
-
Extended front hull by about 20cm
-
Indra Sistemas’ Amazon UC Fire control system (laser range finder, thermals, and day camera) on the box above the first stage ammo stowage. The driver is also provided with a thermal camera.
-
unknown Zoom on the optics
Sources mentioned that the FCS is SOPTAC-18 by Sopelem, but from my findings, Indra Sistemas' FCS seems to be one actually fitted on the tank, as the company themselves specifically said this
![]()
Has day camera and thermal camera, it uses last gen design, with only 640 x 480 pixels of image resolution. Both camera uses the same monitor, the gunner along with the commander have access to the same two types of camera, as they both each have a monitor display
- weight: 14 tons
- length: 6.56 meters.
- Width: 2.5 meters.
- height: 2.35 meters.
- Crew : 3 (gunner, driver, commander)
Armaments
- Main Armament : 105mm CN-105-G1 cannon
- Turret : Steyr JT-1 Turret (same as the SK-105A2 in game)
- Commander can fire gun
- No stabilizers (AFAIK)
- Horizontal traverse = 360°
- Vertical Traverse = -6°/+13°
- 4 second reload
- automatic loading
- 12-rounds first stage ammo
- possibly around 30 total ammo
- 12x 75mm smoke grenade (3 on each side of the turret)
images
![]()
- Secondary Armament :
Coaxial: 1x AAT-F1 (AA-52) 7.62×51mm GPMG
Pintle Mount: 7.62mm M60 or PINDAD SM2-V2 machine gun (the SM2-V2 is a vehicle-mounted variant of the SM2-V1 machine gun, which itself is a license production of the FN MAG)
image
Ammunitions
- OFL 105 G1 APFSDS(most sources mention them as OCC 105 G1 as the APFSDS, but I from the image I assume this is just a misidentification)
- Projectile Mass = 3.41kg
- Muzzle Velocity = 1475 m/s
- The APFSDS can penetrate 250mm of Rolled Homogeneous Armor at an angle of 30° from a distance of 1km
Image of the APFSDS
- 105 MM MLE 57 HE-TNT / RDX (HE-COMP B) made by Hirtenberger Defence
- Muzzle Velocity = 700 m/s
- Max. Gas Pressure = 240 MPa
- Weight/Mass = 19kg
- Explosive Mass = unknown, could be more than 2kg (?) of TNT equivalent
How to tell the difference between the versions of the AMX-13/105
PINDAD’s AMX-13/105 Retrofit
![]()
![]()
The one in the images are the 2014 PINDAD hull with a CN-105-G1, you can tell this version by:
- smooth front hull and a double headlight housing
- no bustle rack on the side of the turret and a small box shape on the back of the turret top (the box is the key feature to notice, as the older Mle 58 AMXs often have the bustle rack removed as well)
- CN-105-57 turret has the square double muzzle break, whereas the CN-105-G1 has one circular shape, the G1’s barrel are also thicker near the mount with a gap to fit a gun travel lock (The 105-57 is has no noticeable gap)
This is the AMX-13/105 Mle 58 (SM1)
C. More Images
Details
Profile
Front
Top
Left Side
Right Side
Back
Text on the side
Crew Compartment
Driver
![]()
Commander
![]()
No gunner images
Footage of the tank
Rare footage of the tank in trials at the factory
https://www.youtube.com/watch?v=F6Yl3UUEzEg
360° close inspection of the tank
https://www.youtube.com/watch?v=h3rVxwyzdV4
HD video of the tank
https://www.youtube.com/watch?v=t36BvcTq590
Footage of the tank firing at targets along with scorpions and AMX-13/105 Mle58 (multiple angles)
https://www.youtube.com/watch?v=cHpLZP2T7nE
Footage of the tank crews at around 4:30 (with inside compartments)
https://www.youtube.com/watch?v=0yaSeAMC_GQ
Footage of the turret rotation and full braking at around 1:55
https://www.youtube.com/watch?v=TlaVQndsYK4
Random Images
AMX-13/105 retrofit on the left
D. Sources
Details
- Robinson, M. P., Lau, P., & Gibeau, G. (2017). The AMX 13 Light Tank: A Complete History. Pen & Sword Military. (book, interesting read)
- Blaar! Dan Tank Retrofit itu pun Mengaum (In Indonesian)
- AMX-13 Retrofit Pindad itu Mulai Berjalan (In Indonesian)
- Intip Langsung AMX-13 Retrofit TNI AD, Tank Tua yang Masih Perkasa (In Indonesian)
- DEFENSE STUDIES: Pengamat Sarankan Duet Modernisasi Tank AMX 13-Harimau (In Indonesian)
- DEFENSE STUDIES: Tank AMX-13 Hasil Modifikasi PT Pindad Ditampilkan (In Indonesian)
- DEFENSE STUDIES: Yonkav 2/TC Laksanakan Latbakjatranpur 2022 (In Indonesian)
- AMX-13 Retrofit TNI AD: Tetap Andalkan Meriam dengan Kubah Osilasi (In Indonesian)
- https://www.indomiliter.com/amx-13-vci-retrofit-harapan-memperpanjang-usia-pakai-apc-legendaris/ (in Indonesian)
- AMX-13 : Tank Tempur Utama TNI-AD (in Indonesian)
- https://www.indracompany.com/sites/default/files/indra_compact_fire_control_system_amazon_en_2020_0.pdf
- https://www.indracompany.com/sites/default/files/indra_v_terrestre_amazon_compact_fcs_eng_v01_baja_1_0.pdf
- https://www.defenceprocurementinternational.com/Content/Profiles/hirtenberger-defence-systems-the-mortar-company/hds-105mm-tank-folder-a4-ansicht.pdf
- Titik Terang Retrofit AMX-13 Pindad
- https://defencehub.live/
- Defence Forum & Military Photos - DefenceTalk
- AMX-13 - Wikipedia
Any suggestions or corrections would be highly appreciated!Additionally, you can check out more Indonesian suggestions below!