Features:
– Minimal weight without sacrificing stiffness
– Wider gear pitch increases clearance between chain and leading teeth, providing compatibility with frames of O.L.D. 135 mm and 410 mm chainstay length
– Lightweight crankarm design optimized for power-transfer efficiency
– Rider-tuned gear performance through various gear combinations
– Redesigned FC for greater frame compatibility
Specifications:
– SERIES SHIMANO ULTEGRA R8000 Series
– Average weight 690 g (53-39T) 681 g (52-36T) 674 g (50-34T) 668 g (46-36T)
– HOLLOWTECH II Technology no
– Threaded BB shell width_70mm no
– Compatible BB type_Outboard no
– Compatible BB type Outboard
– Compatible chain HG-EV 11-speed/HG-no11
– Crank Arm Length 165, 170, 172.5, 175
– Crank arm length (mm)_165.0 no
– Crank arm length (mm)_170.0 no
– Crank arm length (mm)_172.5 no
– Crank arm length (mm)_175.0 no
– Gear arms 4
– HOLLOWGLIDE no – (46-36T)
– HOLLOWTECH Technology no
– Optional chain guard_Without chain / bash guard no
– Optional Chain Guard Without chain guard
– P.C.D. (mm) 110
– Rear speeds 11
– Recommended BB_Pressfit SM-BBR60-PB
– Recommended BB_Threaded (normal) SM-BBR60
– Technology HOLLOWTECH BB, HOLLOWTECH II
– Threaded BB shell width_68mm no
– Threaded BB Shell Width 68, 73
– Includes Crank Arm Finoing Bolt Yes
– Q-factor (mm) 146




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