Estes Rockets A3-4T Engines

Estes Rockets A3-4T Engines

  • $9.95
Free Shipping on Orders of $135 or more!


  • Launch your next model rocket on Estes Rockets A3-4T Engines
  • Each package includes 4 engines, 4 starters and 4 starter plugs
  • 1.8 inches x .50 inches and weighs .28 oz
  • Total impulse: 2.50 N-sec
  • Max thrust: 6.80 Newtons
  • Can only be shipped via USPS Parcel Select Ground. No international shipping is allowed.

Get to know the Estes Rockets A3-4T Engines. This engine is a mini engine designed for flights in lightweight rockets. Each package includes 4 engines, 4 starters, 4 starter plugs. Max thrust is 6.80 Newtons and total impulse is 2.50 N-sec. Remember, these engines only ship USPS Parcel Select Ground. 

Products Containing Crystalline Silica | CA Prop 65
Boyce Aerospace Hobbies recommends hobbyists under the age of 13 be supervised by an adult at all times. 

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