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From the manufacturer's official website:
The Hollowtech II crank and bottom bracket combines race-proven hollow forging technology with the integrated crankset & bottom bracket. Weight is reduced while rigidity & power transfer is radically increased.
In addition to Hollowtech II integrated design; the crank arms are hollow which provide amazing strength and rigidity at a light weight.
Finally, SG-X chainrings enable super smooth front shifting. Special tooth profiles, pick-up spikes and ramps help make the front derailleur shifts quiet, easy and trouble free for you the rider.
Features:
- Crankset with integrated Bottom Bracket.
- Crankset includes BB cup unit (SM-FC6600)
- Crank Arm Lengths: 165/170/172.5/175mm
- Gearing:53-39T/52-39T
Specifications:
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HYPERDRIVE
Yes
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DUAL SIS
Yes
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Chain
compatibility
Super Narrow HG
for 10-speed
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Hollow Crank Arm
HOLLOWTECHII
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Reinforced Spider
Yes
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Number of Teeth
53-39T/
52-39T
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Bolt Circle Diameter
130mm
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Crank Arm Length
165/170/
172.5/175mm
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Crank Arm
forged aluminum/
anodized
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Chainrings
aluminum/
anodized
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Average Weight
839g
53-39T,70mm,
integrated BB
For more information, please visit this product's webpage.
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