Length: 2.61 m
Diameter: 4.0 m
Engine(s): One RD-2000
Thrust: 19.62 kN
Inert Mass: 2,370 kg
Propellant 19,800 kg
Mass:
Comprised of a central core and an additional jettisonable propellant tank and powered by one pump-fed gimballed main engine.
Features increased lift capability of 5,645 kg (12,445 lb) to geosynchronous transfer orbit with a 1,500 m/sec residual velocity to GSO. Strengthened structure allows launching heavier spacecraft with higher center of gravity locations, and even allows for launching multiple spacecraft.