Cranksets, cranks for ebike and chainrings. Praxis was born from the idea of David Earle, formerly an integral part of many of the industry's best-known R&D teams: member of Bontrager Cycles, senior design engineer at Specialized, director of engineering at Santa Cruz Bicycles, and many other engineering initiatives. individual research and development for sector projects. Now it's time to expand and focus on something he had been working on for years, David creates Praxis, who specializes in drivetrain components.