Installing a new chain - length and direction
Sizing and installing a new chain for your Di2 bike isn't hard, you just need to follow the right steps. This page quickly shows the chain sizing methods and explains chain directionality.
2x12 Crankset
105 FC-R7100
The 12 speed 105 Crankset is available in a couple of different crank lengths, from 160mm to 177.5mm.
It weighs 765 g.
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There are two different chainring options:
- 52 x 36T
- 50 x 34T
Specifications
- Model code
- FC-R7100
- Series
- 105 R7150
- Weight
- 754g (50-34T)
- Chain line
- 44.5mm
Images
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