Shimano Ultegra CS-R8101 Cassette - 12-Speed, 11-30t, Silver Front Chainwheel Head circumference in CM :

Head circumference in CM : S 52 - 56

Compatibility: Race / Ergo

With a mission to make proper fueling simple and accessible

the 2:1 glucose-to-fructose ratio and simple ingredients (sugar

Its orange Hi-Vis panels give you extra visibility for practicing open water swimming

Shimano Ultegra CS-R8101 Cassette - 12-Speed, 11-30t, Silver Front Chainwheel Head circumference in CM :The Shimano Ultegra CS R8101 Cassette is engineered for high performance cycling, featuring a precise 12 speed configuration with a gear ratio of 11 30t. This wide range allows for optimized gear selection, offering a seamless transition between high speed flats and challenging climbs. Key Features: 12 Speed Compatibility: Designed for the latest 12 speed Shimano groupsets, ensuring smooth and reliable shifting performance. Gear Ratio: With a range