This aerodynamically designed crankset combines new engineering features together with remarkable weight saving.
High rigidity for optimal power transfer.
Thin-walled forged aluminum crank | Lightweight & Strong
Hollow chainring | Lightweight & rigid
New tooth design | Improved chain contact for power efficiency
Revised seal design for BB adaptor | Smoother rotation and longer durability
Model Number: FC-7900
Series: DURA-ACE
Crank Construction: HOLLOWTECH II
Cassette Compatibility: 10-speed
Chain Compatibility: Super Narrow HG for 10-speed
Hyperdrive: yes
Dual SIS: yes
Reinforced Spider: yes
Chainring Sets 53-42T, 52-39T, 53-39T, 54-42T, 55-42T, 56-44T
Bolt Circle Diameter: 130mm
Crank Arm Length: 165/167.5/170/172.5/175/177.5/180mm
Crank Arms: forged aluminum/anodized
Chainrings: aluminum/anodized
Chain Guard: no
Bottom Bracket: SM-BB7900
Chain Line: 43.5mm
BB Shell Width 68/70mm
Average Weight 725g including BB
To lock the crank you'll need Shimano crank-arm/cap tool TL-FC16
To fit or remove the HollowTech II BB, you'll need Shimano Tool TL-FC32
Japan Retail Price: 53.897 yen (clic here to see cross rate)
Compatible with Shimano chains: CN-7900
Compatible with ONLY: FD-7900-F
Compatible with HollowTech II BB; SM-BB7900, SM-BB90
Park Tool BBB-2 The Big Blue Book of Bicycle Repair - 2nd Edition
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