Estes Power Ladder Engine Pack - A8-3 + B4-4 + B6-4 (9 Engines)

One 3-pack each of Estes A8-3, B4-4, and B6-4 engines - nine engines across the power range. Start gentle on the A, fly everyday on the Bs, and have the right motor on hand as your rockets grow. Each 3-pack includes 4 starters and 4 starter plugs.

Ships via USPS Ground Advantage under our USPS hazmat authorization. A physical street address is required for delivery - rocket engines cannot be shipped to a PO Box. Follow the Estes safety code and all local rules, and supervise young rocketeers.