Search query: b4-4 rocket engines

Product: Estes B6-4 Mini Bulk Pack - 3 Packs of 3 for 9 Engines / Motors with Starters
Brand: Estes
Relevance: Substitute
This mini bulk pack provides 9 of the most popular model rocket engine in the market. The Estes B6-4 is used to provide medium altitude flights for model rockets weighing roughly between 1 and 2.5 ounces which is typical of most rockets being 1 to 2 feet tall. Refer to the instructions or packaging that came with your model rocket for the engines you should be using. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for medium altitude model rocket flights
The best way to get engines in bulk without having to buy 24 of them.
Estes engines are the model rocket industry standard
This set of engines is for rockets that are roughly 1 to 2 feet tall and weighing between 1 and 2.5 ounces

Product: Estes B4-4 Mini Bulk Pack - 3 Packs of 3 for 9 Engines / Motors with Starters
Brand: Estes
Relevance: Exact
This mini bulk pack provides 9 of the Estes B4-4 model engines which is suitable for use in rockets weighing roughly between 1 and 2 ounces which is typical of most rockets being 1 to 2 feet tall. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for medium altitude model rocket flights
The best way to get B4-4 engines in bulk
Estes engines are the model rocket industry standard

Product: Estes D12-3 Mini Bulk Pack - 3 Packs of 2 for 6 Engines / Motors with Starters
Brand: Estes
Relevance: Substitute
This mini bulk pack provides 6 of the Estes D12-3 model rocket engines which are intended for larger & heavier model rockets. Refer to the instructions or packaging that came with your model rocket for the engines you should be using. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for medium altitude flights for larger model rockets
The only way to get D engines in bulk.
Estes engines are the model rocket industry standard

Product: Estes A8-3 Mini Bulk Pack - 3 Packs of 3 for 9 Engines / Motors with Starters
Brand: Estes
Relevance: Substitute
This mini bulk pack provides 9 of the popular Estes A8-3 model rocket engines. These are used to provide low altitude flights for model rockets weighing roughly between 0.8 and 2 ounces which is typical of most rockets being 10 to 18 inches tall. Refer to the instructions or packaging that came with your model rocket for the engines you should be using. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for low altitude model rocket flights - perfect for small fields!
The best way to get engines in bulk without having to buy 24 of them.
Estes engines are the model rocket industry standard
This set of engines is for rockets that are roughly 10 to 18 inches tall and weighing between 0.8 and 2 ounces