HOLLOWTECH II(第二代中空技术)曲柄组(2x11速)

ULTEGRA_R8000_m

FC-R8000

ULTEGRA_R8000_m

FC-R8000

HOLLOWTECH II(第二代中空技术)曲柄组(2x11速)

  • FEATURE
    • 最小化重量而不影响硬度
    • 更宽的齿轮齿距,增大链条和前齿之间的间隙,兼容锁紧螺母间距的车架 135mm 和 410mm 后下叉长度
    BENEFIT
    • 轻盈的曲柄设计,针对动力传输效率进行了优化
    • 通过各种齿数组合提升Rider-tuned变速性能
    • 重新设计的链轮,实现更佳车架兼容性

相关技术

产品规格

型号 FC-R8000
系列 SHIMANO ULTEGRA R8000 系列
Color Series color, -
Average weight 690 g (53-39T) 681 g (52-36T) 674 g (50-34T) 668 g (46-36T)
HOLLOWTECH II Technology X
Threaded BB shell width_70mm X
Compatible BB type_Outboard X
Compatible BB type Outboard
Compatible chain HG-EV 11 速/HG-X11
Crank Arm Length 165, 170, 172.5, 175
Crank arm length (mm)_165.0 X
Crank arm length (mm)_170.0 X
Crank arm length (mm)_172.5 X
Crank arm length (mm)_175.0 X
Gear arms 4
HOLLOWGLIDE X - (46-36T)
HOLLOWTECH Technology X
Optional chain guard_Without chain / bash guard X
Optional Chain Guard Without chain guard
P.C.D. (mm) 110
Rear speeds 11
Recommended BB_Pressfit SM-BB72-41B
Recommended BB_Threaded (normal) SM-BBR60
Technology HOLLOWTECH BB, HOLLOWTECH II
Threaded BB shell width_68mm X
Threaded BB Shell Width 68, 70
Includes Crank Arm Fixing Bolt Yes
Q-factor (mm) 146

产品系列

  • Front Derailleur Adapter 夹环转接座
  • Front Derailleur Adapter 夹环转接座
  • Brake Cable 刹车线
  • Chain 超窄 HG-X11 链条 (11速)