- 146
- 44-32-24T, 48-36-26T
- 170 / 175
- 50
Specifications
As listed in the manufacturer's catalog.
General
- Series
- SHIMANO
- Model no.
- FC-T521
- Rear speeds
- 10
- Compatible chain
- HG-X 10-speed
- Chain line (mm)
- 50
- P.C.D. (mm)
- 104/64
- Spider/gear arms
- 4
- Chainring combination
- 44-32-24T, 48-36-26T
- Q-factor (mm)
- 185.8
- HOLLOWTECH crank arm
- Yes
- OCTALINK
- Yes
- Compatible bottom bracket type / OCTALINK
- Yes
- Recommended bottom bracket / Threaded (normal)
- BB-ES300
- Axle length of BB-UN/ES (mm)
- 121-AK
- Chain case compatible
- Yes
- Outer/middle ring fixing bolt / Material
- Stainless steel
- Inner ring fixing screw / Material
- Stainless steel
- Stainless chain guard fixing screw
- Yes
- Crank fixing screw included
- Yes
Color
- 1
- Black
- 2
- Silver
O.L.D.
- Thru (mm) / 142
- Yes
- QR/Nut (mm) / 135
- Yes
Crank arm length (mm)
- 170
- Yes
- 175
- Yes
Optional chain guard
- With chain guard
- Yes
- Without chain/bash guard
- Yes
Threaded bottom bracket shell width (mm)
- 68
- Yes
- 73
- Yes
Crank arm
- Material
- Aluminum
- Finish
- Painted
Spider arm
- Material
- Aluminum
- Finish
- Painted
Outer ring
- Material
- Aluminum
- Finish
- Anodized
Middle ring
- Material
- Steel+GF composite (44-32-24T), Steel (48-36-26T)
- Finish
- Painted
Inner ring
- Material
- Steel
- Finish
- Painted
How spec sheets write it
The most common ways bicycle spec sheets name it, by number of mentions.
-
Shimano FC-T521, 48/36/26t, with chaincover
-
Shimano FC-T521, 48x36x26T, 175mm
-
Shimano FC-T521, 48x36x26T, Octalink, BB-ES300, 175mm
-
Shimano FC-T521, 48x36x26T, Octalink, BB-ES300, 175mm, Chainguard
-
Shimano Deore T521 48-36-26T
-
Shimano Deore XT T521 / 48-36-26T
-
Shimano T521, 26/36/48
-
Shimano FC-T521, 48-36-26 T, BB type: BSA 68 mm / Octalink (axle length: 121 mm)
Bicycles
Published bicycles that use it, newest model years first.
