Estes Rockets 1/2A3-4T Engines

Estes Rockets 1/2A3-4T Engines

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


  • Launch your next model rocket on Estes Rockets 1/2A3-4T Engines
  • Each package includes 4 engines, 4 starters and 4 starter plugs
  • 1.8 inches x .50 inches and weighs .23 oz
  • Total impulse: 1.25 N-sec
  • Max thrust: 8.30 Newtons
  • Can only be shipped via USPS Parcel Select Ground. No international shipping is allowed.

The Estes 1/2A3-4T engine is single stage engine designed for model rocket flight. Launch your lightweight rocket into the air with this pack of 4 engines, 4 starters and 4 starter plugs. Max thrust is 8.30 Newtons and total impulse is 1.25 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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