Shimano Dura-Ace FC7900 Double Road Chainset

The Features of the Shimano Dura-Ace Double Chainset FC7900 are:

• There is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplines
   
• The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load
   
• These industry leading HollowTech II cold forged hollow crank arms have been evolved to increase rigidity and improve strength
   
• The teeth have been developed to work only in conjunction with the CN7900 chain for improved contact giving more efficiency and improved power transfer
   
• Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability
   
• HollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency
   
• Weight including bottom bracket (not included)725 grams
   
• Bottom bracket cups required