Pro Series II

The Pro Series II line just got a new member! Meet the Super Big Bertha, featuring a BT80 (2.6 in/66 mm) diameter body tube for your building enjoyment. Standing over 36 inches tall, the Super Big Berthacomes with the quick release motor retention systemjust as the other Pro Series kits do. (9750 Motor Retainer Set - is also sold separately). Construction of this kit is not difficult and the altitudes you will reach are very impressive! Building and finish work can easily be accomplished over a few days. AND did we mention its a bring back from around 1990?

If you love rockets that look as good on the launch pad as they do in the air, the Pro Series II™ Super Big Bertha™ belongs in your fleet.

This large scale kit takes everything rocketeers love about Big Bertha and turns it up, delivering commanding size, powerful mid power performance, and a build experience that feels substantial from start to finish.

Big Scale Presence That Turns Heads Featuring a wide BT80 body tube and standing over three feet tall, the Super Big Bertha makes a statement before ignition and stays easy to track all the way through recovery.

Its size adds drama to every launch while still maintaining stable, predictable flight characteristics. A Rewarding Pro Series II Build This kit is designed for builders with moderate experience who want more than a quick weekend project.

Laser cut balsa fins, precision fit components, and a thoughtfully engineered airframe make the build engaging without being overwhelming.

Most flyers can comfortably complete construction and finishing over a few days.

Quick Release Motor Retention System The Pro Series II quick release motor retention system makes post flight turnaround fast and simple.

Spent motors slide out easily without disassembly, keeping you focused on flying instead of fumbling with hardware between launches.

Classic Heritage with Modern Performance Originally released around 1990, the Super Big Bertha is a true Estes classic brought back with modern upgrades.

Flying one connects you to decades of rocketry tradition while enjoying the reliability, durability, and performance expected from today’s Pro Series II kits.

High Altitude Flights and Gentle Recovery When powered by recommended mid power engines, the Super Big Bertha reaches projected altitudes of up to 1200 feet, delivering long, exciting flights that are still easy to follow visually. A large parachute recovery system ensures smooth landings and keeps the rocket ready for launch after launch.