Shimano Dura-Ace FC-R9200 12 Speed Chainring Size:52t The Thomson X2 features a

The Thomson X2 features a lighter

Reduces friction on fork stanchions and rear shocks

Developing a nutritional strategy for races or key sessions is complex

4 compounds in the tread (4C) for increased wear life

with a larger C-shape

Shimano Dura-Ace FC-R9200 12 Speed Chainring Size:52t The Thomson X2 features aWith their special tooth profiles, mount pins and climbing aids, Shimano Dura Ace FC R9200 12 Speed Chainrings enable a particularly smooth and fast shifting process. Shifting under load, as one would otherwise only expect from a rear derailleur, is possible without issue. The carbon fiber reinforced plastic construction with aluminum teeth helps keep weight down while increasing torsional rigidity, and the Hollowglide profile of the large chainrings