CNC machined chainrings 2-fold, suitably graded for racing bikes. Designed for optimum rigidity and perfect shifting performance newly developed switching profiles and shift ramps. Made from high quality 7075 T6 aluminum for optimum rigidity. The anodized surface ensures a long life and beautiful appearance.
The Aero chainrings have due to their continuous outer surface less surface for the wind and offer so again a small advantage at high speeds.
intended use : Road, Triathlon, time trial
Material: 7075 T6 aluminum
bolt circle diameter : 130 mm (standard)
Mounting: 5-arm spider
Number of teeth: 53, 54, 55 or 56 teeth
Compatibility chain: 9-fold, 10-speed or 11-speed
Weight: not specified by the manufacturer
Delivery: 1x outer chainring