 The turret closely resembled those of the T-90S, T-90SA and T-90A.Their turret design was later based on the third prototype series turret, with its similar lowered driver position, etc.The tank was originally equipped with a 1000 hp engine, but as an experiment the 1250 hp gas-turbine engine and transmission of the T-80U was fitted with a corresponding change in the hydro-shock absorbers, and the result sent to trials.