The Estes Standard to D Engine Adapters are a versatile accessory for customers who want more choices when powering compatible model rockets. By allowing a standard size engine to fit inside a D engine mount, these adapters help rocketeers adjust flight performance based on field size, rocket weight, and available engines.

A Practical Add-On for Rocket Customers

Engine adapters are an easy accessory sale for customers purchasing compatible rockets, replacement engines, or launch supplies. They provide a simple way to increase the usefulness of existing rocket collections without requiring permanent modifications to the model.

Simple, Reusable Design

Using the adapter requires only two steps. The customer inserts a standard engine into the adapter, then installs the adapter in the rocket’s D engine mount. Each package contains three reusable adapters, providing lasting value and helping support repeat launches.

Important Compatibility Information

These motor adapters have been tested in products that use Estes metal engine hooks and may not work with engine hooks from other manufacturers. Rockets weighing up to 4 ounces that would normally fly on C11 or D12 engines may be flown on compatible B and C engines, giving customers additional options for lower altitude flights and smaller launch areas.