Shimano Dura Ace Double 7900/7950 10Spd Chainset

Product Description

The Hollow Tech Ii 10-speed Dura-Ace chainset offers the optimum balance of light weight & rigidity, making it the global choice for road racing's elite riders- Shimano has raised the bar to a new level of performance with the development of a hollow outer chainring, giving vast improvements in rigidity & increased weight savings- The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load- These industry leading Hollow Tech Ii cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, & improve strength- The teeth have been developed to work only in conjunction with the Cn 7900 chain for enhanced contact providing more efficiency & enhanced power transfer- There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines- Hollow Tech Ii integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency- Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling & increased durability- Weight including bottom bracket 725g- Bottom bracket cups sold seperately