Dura Ace 7900 Review

Both professional and recreational cyclists choose Shimano for all of their biking components. With their benchmark designs and advanced materials, it is understandable why cyclists of all levels around the globe choose Shimano. The company began in 1921 and have since then produced some of the most revolutionary products in cycling, and the Shimano Dura Ace 7900 is a clear example of Shimano ability to still produce excellent cycling components that every cyclist not only wants but needs. The new benchmark in chainsets is the Shimano Dura Ace 7900 has been completely redesigned compared to previous models, weighing 725 grams, including bottom bracket; it is one of the lightest chainsets available to cyclists today. One of the best features of the Dura Ace 7900 is the HollowTech II cold forged crank arms, these re-shaped hollow arms ensuring that the chainset maintains a lightness, however, the rigidity of these arms guarantees that the Dura Ace 7900 is one of the stiffest chainsets available to date.

Shimano have explained that it is 20 per cent stiffer than previous crank models. It is the stiffness of the chainset which is felt immediately, with our tests showing that power was efficient transferred and that no energy was lost during difficult inclines. Moreover, the crank arms are extremely strong ensuring that it will maintain a high level of rigidity even when used by heavier riders. Additionally, the Dura Ace 7900 includes Shimano’s unique HollowTech II integrated bottom bracket seal design, which uses a wider bearing placement as well as a larger axle diameter to create an overall stiffness allowing for more effective power transfer, with no energy loss. While the bottom brackets minimal bearing interface guarantees that the chainset rolls smoothly but maintains a high level of durability. One of the most exciting features of the Dura Ace 7900 is the hollow outer chainring; the pioneering feature reduces the mechanical drag as well as offering a high level of rigidity and precise shifting capabilities. Every feature of the Dura Ace 7900, from the precise teeth design to the stiff, lightweight crank arms have been developed to ensure that the chainset is the best for competitive racing, guaranteeing the cyclist will be at the front of every race.

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