The SLS Solid Boosters are boosters that are officially part of the SLS . These are the largest and most powerful boosters in the game, but can only be attached to the SLS Core Stage.

The SLS Boosters use solid fuel in-game, which makes it impossible to throttle, or to shut down during flight; though they may be jettisoned at any time by pressing the staging button. Once ignited, they burn at full power until the fuel is exhausted, then are automatically separated from the rocket.

The SLS Solid Boosters differ from the SLS Advanced Boosters by shape and paint scheme, but are the same in Lifting Power and Fuel Capacity.

SLS Solid