The Solid Boosters are small-sized boosters that can be attached to the side to any first stage that has room for boosters. These are the weakest boosters in the game.

The solid boosters, unlike the liquid boosters, once ignited can't be throttled or turned. They burn until their fuel is gone, after which they are automatically detached. 


  • On the Titan II, the boosters fire for 30 seconds before separating.