Quadangle​

Quadangle​

Scot Breithaupt organized the first-ever BMX race, at just 14 years old, he went on to create the Bicycle United Motocross Society (B.U.M.S.) and soon produced the first California State Championships in 1972.

From designing BMX tracks and promoting races to establishing BMX publications and managing race teams, Scot played an integral role in growing the sport.

In 1977, Scot founded the SE company was founded in Long Beach, CA. Their first ever production bike was the JU-6.

​Two years after the SE Company was founded, the top rider on the SE team, Perry Kramer had the team weld a gusset to the top tube junction for strength. Once the frame redesign was completed, it became Perry’s signature bike, the “PK Ripper”. With over 40 years of production, the PK Ripper is not only the longest running bike in the sport, but the most legendary BMX bike of all time.

​This bike is a SE Racing Quadangle. The bike originated in 1979 as the STR-1 for star BMX’er Stu Thompson.  Stu and his SE were on countless magazine covers and at the front of many races.