Sirius Rocketry - For the Serious Rocketeer!

HAMR 54mm Motor Retainer Set


  • Model: PML HAMR-54 Set
  • Manufactured by: PML

Designed for rockets with a standalone 54mm MMT. Includes threaded sleeve and retainer cap for 54mm MMT. 1.30 ounces total.

PML's own line of high quality, threaded motor retainers! The HAMR (Highly Adaptive Motor Retainers) system has been designed specifically for use with PML rocket kits or any scratch-built rocket using PML motor tubes. These lightweight, tool-free, threaded retainers are precision CNC turned from 6061 aluminum and anodized. These retainers fit virtually all popular motor brands and types including Aerotech RMS (TM), CTI Pro XX (TM), Animal Motor Works (TM), Hypertech (TM), Kosdon (TM), Sky Ripper (TM), Loki (TM), and others.



The HAMR system can be adapted to existing rockets if the motor tube extends at least 3/8” beyond the aft centering ring. The HAMR can also be used with boattail and tailcone rockets.



Add to Cart:

Recently Viewed

Copyright © 2021 Sirius Rocketry Online Store
Join the NAR!