shimano

Crankset, bottom bracket and chain line [MTB, LIFESTYLE] C-449

In order to use SIS (SHIMANO INDEX SYSTEM) to its full extent, the required correct chain line, along with the crankset and bottom bracket required to obtain that, are given in the chart below.

Separate type FC-BB compatibility [MTB, LIFESTYLE] C-450

11, 10, 9-speed

Speed

Series

Crankset

Bottom bracket

Chain line and axle mark

Model No.

Type of crank

Model No.

47.5
mm

50.0
mm

52.5
mm

47.5+t
mm

48.8
mm

51.8
mm

52
mm

OCTALINK

Square

Chain
case

11, 10, 9

CUES

FC-U4000-1
(40T/42T)

–

✔

✔*1

BB-UN300(-K)
BB-UN101(-K)

–

LL123

–

–

–

–

–

FC-U4000-1
(30T/32T)

–

✔

–

BB-UN300
BB-UN101

–

–

–

–

–

–

LL123

FC-U4000-2

–

✔

–

BB-UN300
BB-UN101

–

–

–

–

LL123

–

–

FC-U4000-2B

–

✔

–

BB-UN300
BB-UN101

–

–

–

–

–

LL123

–

10

SHIMANO

FC-M523

✔

–

–

BB-ES300

–

118

–

–

–

–

–

FC-M522

✔

–

–

BB-ES300

–

113

–

–

–

–

–

9

ALIVIO

FC-M4000

✔

–

–

BB-ES300

–

118

–

–

–

–

–

FC-T4010

✔

–

✔*1

BB-ES300(-K)

–

126

–

–

–

–

–

FC-M430-8

✔

–

–

BB-ES300(-E)

–

118

–

–

–

–

–

FC-M430

–

✔

–

BB-UN26(-E)
BB-UN300(-E)

–

LL113

–

–

–

–

–

ACERA

FC-M3000-8

✔

–

–

BB-ES300

–

118

–

–

–

–

–

FC-M3000
FC-M3000-B2

–

✔

–

BB-UN26
BB-UN300

–

LL113

–

–

–

–

–

FC-T3010-8

✔

-

✔*1

BB-ES300(-K)

–

126

–

–

–

–

–

FC-T3010

–

✔

✔*1

BB-UN26(-K)
BB-UN300(-K)

–

LL123

–

–

–

–

–

ALTUS

FC-M2000

–

✔

–

BB-UN26
BB-UN300
BB-UN100
BB-UN101

–

LL123

–

–

–

–

–

SHIMANO

FC-MT100
FC-MT101

–

✔

–

BB-UN26
BB-UN300
BB-UN100
BB-UN101

–

LL123

–

–

–

–

–

FC-M371

–

✔

✔*1

BB-UN26(-K)
BB-UN300(-K)

–

LL123

–

–

–

–

–

FC-M351

*1 Chain case stay thickness should be 1.5 mm to 2.1 mm.

NOTE

  • If using a chain case, select a BB-xxxx (-K) / -K bottom bracket.

  • If using an E-type front derailleur, select a BB-xxxx (-E) bottom bracket.

  • FC-M521: Use 121AK with 1.8 mm spacer if no chain case used.

8, 7, 6-speed

Speed

Series

Crankset

Bottom bracket

Chain line and axle mark

Model No.

Type of crank

Model No.

47.5
mm

50.0
mm

52.5
mm

47.5+t
mm

48.8
mm

51.8
mm

52
mm

OCTALINK

Square

Chain
case

8, 7

ACERA
ALTUS

FC-M361
FC-M311

–

✔

✔*1

BB-UN26(-K)
BB-UN300(-K)

–

LL123

–

–

–

–

–

TOURNEY

FC-TX801

–

✔

✔*1

BB-UN26(-K)
BB-UN300(-K)
BB-UN100(-K)
BB-UN101(-K)

–

LL123

–

–

–

–

–

SHIMANO

FC-M315-2

–

✔

–

BB-UN26
BB-UN300
BB-UN100
BB-UN101

–

–

–

–

LL123

–

–

FC-M315-B2

–

✔

–

BB-UN26
BB-UN300
BB-UN100
BB-UN101

–

–

–

–

–

LL123

–

FC-TY501-2

–

✔

–

BB-UN26
BB-UN300
BB-UN100
BB-UN101

–

–

–

–

LL123

–

–

8, 7, 6

SHIMANO
ESSA

FC-U2000-1

(40T)

–

✔

✔*1

BB-UN300(-K)
BB-UN101(-K)

–

LL123

–

–

–

–

–

FC-U2000-1

(32T)

–

✔

–

BB-UN300
BB-UN101

–

–

–

–

–

–

LL123

SHIMANO

FC-TY701
FC-TY501
FC-TY301

–

✔

✔

BB-UN26(-K)
BB-UN300(-K)
BB-UN100(-K)
BB-UN101(-K)

D-NL
(122.5)

D-EL

–

D-NL-K
(122.5)

–

–

–

*1 Chain case stay thickness should be 1.5 mm to 2.1 mm.

NOTE

  • If using a chain case, select a BB-xxxx (-K) / -K bottom bracket.

  • If using an E-type front derailleur, select a BB-xxxx (-E) bottom bracket.