Every watt generated by your pedaling deserves a transmission with total efficiency and zero loss.

The X2 RD R81 chainring is designed for cyclists who demand the maximum: a light and rigid chainring that transfers every single watt with absolute precision.

Its secret lies in meticulous engineering: a CNC-machined AL 7075-T6 aluminum plate is bonded to a structural 3K carbon plate. This advanced combination guarantees extreme rigidity, optimal lightness, and a power transfer responsiveness of the highest level.

Choosing this chainring means maximizing every watt produced, transforming energy into speed and feeling a tangible difference with every pedal stroke. It is the result of advanced design and construction quality to the highest standards.

Every watt saved is not just efficiency: it's time gained, it's pure performance, it's concrete results.

- Bolt Circle Diameter 110mm
- 4-bolt
- Compatible with SHIMANO Ultegra R8100 12-speed cranksets