产品规格

型号 FC-M645
系列 ZEE M640 系列
Color Series color, -
Average weight 858 g (38T), 847 g (36T), 837 g (34T)
   
Remarks For 83 mm bottom bracket shell width
2-piece crank construction
Chain line (mm) 57.9
Chain ring combination 38T, 36T, 34T (FC-M640/M645 chainring)
Compatible BB type Outboard
Compatible chain HG-X 10 速
Crank Arm Length 165 mm, 170 mm, 175 mm
Crank fixing bolt included
Gear arms 4 臂
Optional Chain Guard Without chain/bash guard
P.C.D. (mm) 104
Rear speeds 10
Recommended BB_Pressfit SM-BB71-41C
Recommended BB_Threaded (E-type) SM-BB52
Recommended BB_Threaded (normal) SM-BB52
Threaded BB Shell Width 83 mm
Crank arm fixing bolt_With
Includes Crank Arm Fixing Bolt Yes
Q-factor (mm) 189.7

产品系列

  • 筒轴 12mm 后 E-THRU 筒轴 I 型,适用于 142mm/148mm 锁紧螺母间距
  • 刹车 油压碟刹夹器
  • 碟刹盘片 6 螺栓碟刹盘片
  • 卡式飞轮 HG Cassette Sprocket (10-speed)