Production information
Manufacturer TharHes Industries[1]
Production Year 3112[2]
Model URA-2A
Class Heavy
Technical specifications
Mech type Inner Sphere BattleMech
Mass 65 tons
Chassis URA Quad Endo Steel[1]
Armor Durallex Medium[1]
Engine VOX 325 XL[1]
Communications System TharHes Melpomene HM-33[1]
Targeting Tracking System TharHes Ares-9[1]
Heat Sinks 13 Double Heat Sinks[1]
Speed 86[1] km/h (108[1] km/h with MASC)

1x Rotary AC/2[1]
1x ER PPC[1]
4x Medium X-Pulse Lasers

BV (2.0) 1,887[1][3]


A product of TharHes Industries' defense plants on Tharkad, the quadrupedal Ursa was a jack-of-all-trades often paired alongside the Scourge to perform risky escort duties or to go on heavy recon missions. Introduced during the third decade of the thirty-second century, the Ursa was popular with mercenary units and with those forces fighting along the border between the Lyran Commonwealth and Clan Jade Falcon.[1]

Key to the Ursa's design is its revolutionary gyroscope, which renders the 'Mech exceptionally stable - even in comparison to other quad BattleMechs. The MASC system built into the Ursa in combination with the VOX 325 Extra-Light Fusion Engine that powers the 'Mech results in a ferocious quadrupedal design that can run at speeds of over one hundred kph; this, combined with the gyro and twelve and a half tons of Durallex Medium armor meant that the Ursa can not only survive full-speed collisions but can do so without falling or the pilot losing control. This led to MechWarriors nicknaming the Ursa "the Rhino" because of the brutal charges it can perform.[1]

Weapons and Equipment[edit]

The suite of offensive weaponry carried by the Ursa is divided between the left and right torsos. On each side are a brace of Martell-X Medium X-Pulse Lasers, popular with those who regularly fought the Clans; mounted into the right torso is a Thor 40mm Rotary Class 2 Autocannon supplied with a ton of ammunition, while mounted into the left torso is a Defiance 1001 Extended Range Particle Projection Cannon.[1]


  • URA-2C 
    A Clantech variant of the Ursa. In addition to being constructed with lighter materials, the URA-2C replaces the Spheroid Medium X-Pulse Lasers with ER Medium Pulse Lasers and adds a fourteenth double heat sink. BV (2.0) = 2,570.[4][5]

Design Quirks[edit]

The Ursa was subject to the following Design Quirks:


The Ursa premiered in the MechWarrior: Age of Destruction game; within this game, additional variants were apparently introduced - the URA-2E, URA-2F and URA-2G. Record sheets haven't been published for these variants as yet.

The Master Unit List records the URA-2A as entering service in 3112 and the URA-2C as entering service in 3115.[2] This is inconsistent with Technical Readout: 3145 Lyran Commonwealth, which states that the Ursa entered service in the third decade of the thirty-second century.[1] A question has been raised about this in the official forum.

Image Gallery[edit]


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 Technical Readout: 3145 Lyran Commonwealth, p. 38-39, "URA-2A Ursa"
  2. 2.0 2.1 MUL online date for the Ursa
  3. Record Sheets: 3145 Unabridged, p. 311
  4. Technical Readout: 3145 Lyran Commonwealth, p. 98, "Ursa URA-2C"
  5. Record Sheets: 3145 Unabridged, p. 312