Ultegra FC-R8000 Crankset Tooth Count:53-39 It offers 3 phases of

It offers 3 phases of flash frequency and can operate for up to 50 hours on a single coin cell battery

Strong enough to stand up to chlorine and sunlight but soft and smooth to the touch

Lumins Output: High (200)

For hubs with axle skewer attachment 142×12mm: various DT Swiss and Shimano

With moisture-wicking properties

Ultegra FC-R8000 Crankset Tooth Count:53-39 It offers 3 phases ofShimano's Ultegra FC R8000 Crankset represents true trickle down from Shimano's flagship Dura Ace group not only visually, but in the technological features that make both cranksets light, stiff, and shift with precision. The new, aggressively angular lines increase stiffness, providing excellent power transfer. The chainrings and bolts were also redesigned to provide better chainstay clearance for shorter rear end bikes or road disc bikes with wider