Shimano Dura-Ace Crankset 12-Speed FC-R92000 172.5mm 54-40T Hollowtech SRAM The Octo Fit System allows

The Octo Fit System allows riders to dial in their precise fit and support a head of any shape

Taking design cue's from Shimano's Dura-Ace line

Regardless

Or if you prefer a fixed cleat with no float

an offset slit design that holds up to 168 flies

Shimano Dura-Ace Crankset 12-Speed FC-R92000 172.5mm 54-40T Hollowtech SRAM The Octo Fit System allowsOUTER RING MATERIAL Aluminum CFRP CRANK AXLE MATERIAL Steel AVERAGE WEIGHT 680g,690g, THREADED BB SHELL WIDTH 68 70 CRANK ARM FINISH Anodized COMPATIBLE BB TYPE Outboard CRANK AXLE FINISH Plated GEAR ARMS 4 COMPATIBLE CHAIN CN M9100 SERIES Dura Ace INNER RING MATERIAL Aluminum GENERATION R9200 INNER RING FINISH Anodized CRANK ARM LENGTH 160,165,167. 5,170,172. 5,175,177. 5 CHAIN RING COMBINATION 50 34,52 36,54 40 OUTER RING FINISH Anodized CRANK ARM