38mm to 29mm Motor Adapter for HAMR-38

54mm HAMR Retainer Set

Designed for rockets with a standalone 54mm MMT.

38mm HAMR Retainer Set

Designed for rockets with a standalone 38mm MMT.

29mm HAMR Retainer Set

Designed for rockets with a standalone 29mm MMT.

Kwik-Switch HAMR Retainer Set

Designed to incorporate into the PML "Kwik-Switch" motor mount system.

Pro Series II – Advanced

Everyone builds and flies the family of Der Red Max rockets. Make sure your own collection includes our newest 3 inch diameter, 29 inch tall version! Includes 29mm engine mount with no forward retainer ring allowing a wide variety of engine choices.