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Dish 39D (Type B) Shimano 7900 Dura-Ace double 10V.

RRP £51.79
£27.24
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Dish 39D (Type B) Shimano 7900 Dura-Ace double 10V.

Dish Technology 39D (Type B) Shimano 7900 Dura-Ace:
-HyperDrive:
The Shimano front gear system is based on the HyperDrive concept. The derailleur, the HG chain and the SG-X plates work together to achieve a more reliable, more precise and faster front change action.
Without HyperDrive, problems can frequently occur when changing the medium to large plate, especially under high loads. The Shimano Hyper Drive system avoids that problem. The front teeth, the pins of the SG-X plates, the super rigid wide link diverter and the spatial profiles of the links of the HyperGlide chain have been designed so that they interact perfectly to achieve a smooth and trouble-free change. The plates have exceptional torsional rigidity and the teeth have contoured profiles to ensure that the chain engages smoothly with the plates to raise or lower the gears.

-Hollowglide (hollow technology in the outer plate):
The hollow structure of great rigidity reduces the weight without affecting its strength. Better force transfer and front change faster and more accurate.
Reference: Y1KY39000

Quick Overview

The influence of the dishes on the performance of the chain change systems is often underestimated. To achieve the original performance, Shimano sets of cranks will only be used together with the appropriate original Shimano plates. Only these plates have been designed with precision engineering for a perfect interrelation between them and the Shimano chain. With features such as profiles of special teeth, ramps and pins, ensure a precise and smooth front change.

Quick Overview

The influence of the dishes on the performance of the chain change systems is often underestimated. To achieve the original performance, Shimano sets of cranks will only be used together with the appropriate original Shimano plates. Only these plates have been designed with precision engineering for a perfect interrelation between them and the Shimano chain. With features such as profiles of special teeth, ramps and pins, ensure a precise and smooth front change.
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