Shimano Dura-Ace FC-R9200 Crankset - 170mm 12-Speed 54/40t Hollowtech II Spindle Interface BLK ModelNumber=K2898 }Shimano Dura-Ace 9000 Chainring -

}Shimano Dura-Ace 9000 Chainring - 50 Tooth 11-Speed 110mm BCD For 50-34T Combination

and Shimano shifting systems

For use with Shimano XTR M9100 series cranksets

}SRAM Red 22 53T 130mm BCD YAW Chainring Gray for Hidden or Non-Hidden Bolt Use with 39T

Brake Type Disc Color British Racing Green Defined Color Green Fork Material Steel Fork Type Rigid Frame Material Steel Frame Type Rigid Front Axle 15mm Thru x 110mm Mfg Size Large Rear Axle 12mm Thru x 145mm TT (Effective) 637 Wheel Size 29+ Platform Krampus

Shimano Dura-Ace FC-R9200 Crankset - 170mm 12-Speed 54/40t Hollowtech II Spindle Interface BLK ModelNumber=K2898 }Shimano Dura-Ace 9000 Chainring -Shimano Dura Ace FC R9200 Crankset 170mm 12 Speed 54 40t Hollowtech II Spindle Interface Black. The Shimano Dura Ace FC R9200 crank performs two vital functions; transferring your pedaling effort into the drivetrain and ensuring the fastest most precise front shifting available. With HOLLOWTECH II crank arms to ensure light weight and Shimanos class leading chainring designs the FC R9200 wont let you down. Optimal balance of stiffness strength weight