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The BT-65 Tube Coupler is built for rocketeers who want to customize, repair, or extend their BT-65 body tube rockets with confidence. Measuring 4 inches long, this coupler slips inside compatible BT-65 body tubes to create a clean, strong connection between sections.

Extend Your Rocket Design

Whether you are increasing body tube length for a custom build or replacing a needed part, this BT-65 coupler gives you the flexibility to build the rocket you have in mind. Its 4 inch length offers a reliable bonding area, helping create a sturdy joint that supports a smooth, streamlined rocket body.

Build Payload Bays and Custom Sections

The BT-65 Tube Coupler can also be used as a shoulder joint when adding a payload bay to your rocket. With an ID of 1.684 inches and an OD of 1.744 inches, it is a practical component for builders who enjoy experimenting with new configurations, added sections, and functional rocket designs.

A Useful Replacement and Builder Part

This coupler is used in the Estes Green Eggs and Olympus rockets, making it a smart part to have on hand for repairs, replacements, or future builds. Add one to your workshop an

Body Tube Couplers

Price

Collections

BT-65 Tube Coupler

BT5 - BT50 Tube Couplers

BT55 - BT60 Tube Couplers

BT-80 Tube Couplers

Pro Series II™ 2" Body Tube Coupler

Pro Series II™ 3" Body Tube Coupler

Pro Series II™ 2" to 2.5" Plastic Tube Adapter

Large Tube Coupler Pack

Pro Series II™ 2.5" Body Tube Coupler