B de B Trajectory
Manufacturer YoYoJam
Release date 2001
Shape Modified
Color Burgundy/Gold
Weight 56 grams
Dimensions Diameter: 57mm
Width: 18mm to 25mm
String Gap Width: Adjustable
Material Plastic
Bearing size Size B YYJ Small
Response system Starburst
The B de B Trajectory by YoYoJam was the first signature series yo-yo of U.S. National Grand Master, Bill de Boisblanc.

It has a flared Modified-style body profile, along with a twist-adjustable string gap, in addition to a weak starburst response and a ball bearing axle for long spins. It was also the first YoYoJam yo-yo to be molded in two colors for a two-toned colorway.

It is the looping/2A counterpart to the Butterfly-shaped B de B Freestyle.


  • The B de B Trajectory was the very first YoYoJam yo-yo to carry the Trajectory name.


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