12 engine motor mount kits used to mount an 24mm E-size motor mount into a BT55 rocket airframe. Complete with spacer, plywood centering rings, strong stainless steel engine hook, engine block, engine tube, clip holder ring and E to D adapter. Spacer allows to easily position the clip in front of the thrust ring therefore preventing ripping the motor tube each time the ejection charge fires.

No more masking tape! Clip holder holds the engine clip securely in place.

The motor mount is 4.25" long