Shimano's unique and distinctive four-arm construction is designed for maximum strength at high-stress points. The Ultegra crankset uses Hollowtech II technology which sets a new standard for stiffness and light weight.
Advanced Mechanical Forming
With our Advanced Mechanical Forming technology we can mechanically transform different frame tubes and thus optimize them without material-wearing welding work for the respective requirements. Along the obtained organic look, the production method is primarily motivated by functional reasons. Multiple converted tubes enable us to manufacture lighter and also stiffer aluminum frames.