White Lightning F engines with 4-second delay and 24-mm diameter.

The Economax engines have the power of an F in the size of a D. Sold in pairs, they allow a considerable saving compared to the motors sold individually.

These motors are ideal for rockets within 500 g of weight, with a 24 mm motor mount. In fact they have been designed for Estes Pro-series rockets, to which they provide a much higher thrust.
They can also be used in rockets with 29 mm support via a 24-29 adapter (not included).

The package includes 2 engines and 2 igniters