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Model Rocket Engines - A Series

321Rockets offers a large selection of Estes A Series Model Rocket Engines for all your model rocket needs. These rocket engines are leading in the industry when it comes to reliability and price tag. Shopping for a rocket engine on our site is made easy for our customers. Pick a rocket you wish to use and find the specifications it requires for an engine. It's that simple.

Estes model rocket engines range in many different sizes and each rocket is designed to handle certain sizes. A Size rocket motors are the smallest size rocket engine and are designed for lightweight beginner rockets. Each Estes model rocket tells which rockets are compatible with the particular model and often many options of rocket engines are available. If this is your first launch it is never a bad idea to start with A size rocket engines.

Take the time to browse our Estes A Series Model Rocket Engines to find which ones will be required for the model rocket you purchase. Need more rocket engines than this? You can always buy bulk rocket engines.

What do the different color Estes A Series Model Rocket Engines mean? Each type of Estes Engine is printed in a different color:

  • Green Label = Single Stage Engine
  • Purple Label = Upper Stage Engine (can be used as single stage engines in lightweight rockets)
  • Red Label = Booster (contain no delay or ejection charge)
  • Blue Label = Plugged (used for R/C gliders and contain no delay or ejection charge)