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Special Shipping Requirements

Many rocketry products require special shipping.
Engines require HAZ-MAT shipping See our SHIPPING area before placing an order to avoid delays and further charges.
Any products with HAZ in the description require shipping regulated by the federal government. Other products like fin stock and body tubes may also require special boxes. Please see our SHIPPING listings to learn more before placing an order.

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Commonwealth Rocketry, LLC.

47887 Michigan Ave. Suite 207
Canton, Michigan 48188
734-722-Rocket (7625)
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List Price: $29.99
Price: $19.99

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Estes Fat Boy Upgrade Kit

Upgrade your Estes Fat Boy kit or custom build your own kit with these parts.

What do you get ?

Fat Boy Upgrade kit Either 3/32" Aircraft Plywood Fin Set (3) see part number.
Or 0.100 Styrene Fin Set (3) see part number.
24mm heavy duty motor mount tube, fits Estes D-E engines.
Heavy duty 3/32 aircraft plywood centering ring set.
PMR24 Perfect Motor Retainer System
Kevlar 200lb test shock cord.
36 inch military grade parachute.

NO instructions are provided at this time!
Experienced rocketeers should have no problems constructing their FAT Boy or a custom kit with these parts. Nose weight will need to be added!

Tired of your balsa wood fins breaking when your rocket lands? Our replacement fin stock will not break like the whimpy balsa wood fins. We also include a 24mm heavy duty engine mount instead of the Estes thin 18mm mount. This allows you to fly with high impulse engines from Aerotech. Fly this bird on an Estes D12 or an Aerotech F39 and watch it go. This upgrade is recommended for those with mid-power or high power rocket experience. Epoxy glue must be used with this upgrade kit. Nose weight will have to be added to the nose cone to have stable flights.
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