SE Bikes – Pioneers Of BMX Since 1977. Founded by Scot Breithaupt in Long Beach, California, SE Bikes is known for Innovation, Quality, and Iconic Models like the PK Ripper and Quadangle. BMX Bikes, City & Cruiser Bikes, and Freestyle Bikes deliver Performance, Durability, and Style for Riders of all Levels. More than Bikes—SE Bikes is a Lifestyle, inspiring Riders worldwide and setting the Standard in BMX Design and Innovation