High Power Model Rocketry

3D Motor Retainers

3D Motor Retainers - Main image
3D Motor Retainers - View 2
$2.75 $4.5 In stock

Our 3D Motor Retainers offer an economical retainment experience! Printed in-house from PETG material, they are an affordable option for those looking to keep their motor in their rocket. Install on to the aft of your motor tube with BSI 15 minute epoxy and ergonomically flip motors in the field quickly and easily! All are sized for LOC cardboard motor tubes. 

LOC 3D Motor Retainer

  • 24mm: 25.5MM ID of retainer. Requires at least 0.25" of motor tube exposed for installation. Weight: 7g
  • 29mm: 30.1MM ID of retainer. Requires at least 0.5" of motor tube exposed for installation. Weight: 10g
  • 38mm: 41.4MM ID of retainer. Requires at least 0.5" of motor tube exposed for installation. Weight: 12g
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.2 / 5 · 5 reviews)

Jason L. ★★★★★

Slipped them onto my rocket's motor tube and they locked in place without any wobble. The PETG print quality is clean with no rough edges, and for the price, it's a solid way to keep things secure.

Jason ★★★★★

These PETG retainers fit perfectly and held my motor secure through a rough launch. I was surprised how sturdy they feel for the low price.

Claire I. ★★★★☆

The PETG material feels sturdy enough for a few flights, though the fit was a tiny bit snug on my motor tube. It's a solid budget option for keeping the motor secured in the rocket without breaking the bank.