shimano

Spoke protector C-491

Select the spoke protector after checking the chart below.
It is decided by hole number of hub and number of the gear teeth, other than multiple freewheel.

Cassette

Spoke protector model

Flange diameter of rear hub (FH side)

53.8 mm

70.6 mm

Speed

Model No.

Number of largest sprocket teeth

Spoke hole number

Spoke hole number

25T

28T

30T

32T

34T

36T

40T

42T

45T

46T

51T

28H

32H

36H

28H

32H

36H

12-speed

CS-M9101

-

-

-

-

-

-

-

-

✔

-

✔

-

-

-

-

-

-

CS-M9100

-

-

-

-

-

-

-

-

✔

-

✔

-

-

-

-

-

-

CS-M8100

-

-

-

-

-

-

-

-

✔

-

✔

-

-

-

-

-

-

CS-M7100

-

-

-

-

-

-

-

-

✔

-

✔

-

-

-

-

-

-

CS-M6100

-

-

-

-

-

-

-

-

-

-

✔

-

-

-

-

-

-

11-speed

CS-M9001

-

-

-

-

-

-

✔

-

-

-

-

-

-

-

-

-

-

CS-M8000

-

-

-

-

-

-

✔

✔

-

✔

-

-

-

-

-

-

-

CS-M7000

-

-

-

-

-

-

✔

✔

-

✔

-

-

-

-

-

-

-

CS-M5100

-

-

-

-

-

-

-

✔

-

-

✔

-

-

-

-

-

-

10-speed

CS-M4100

-

-

-

-

-

-

-

✔

-

✔

-

-

-

-

-

-

-

CS-M771-10

-

-

-

✔

✔

✔

-

-

-

-

-

-

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG81-10

-

-

-

-

✔

✔

-

-

-

-

-

-

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG500-10

✔

✔

-

✔

✔

-

-

✔

-

-

-

-

-

-

-

-

-

CS-HG50-10

-

-

-

-

-

✔

-

-

-

-

-

-

CP-FH56

CP-FH53

-

-

-

9-speed

CS-HG400-9
CS-HG300-9
CS-HG201-9
CS-HG200-9

-

-

-

-

-

✔

-

-

-

-

-

-

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG400-9
CS-HG300-9
CS-HG201-9
CS-HG200-9

-

-

-

✔

✔

-

-

-

-

-

-

CP-WH12

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG400-9
CS-HG300-9

-

✔

-

-

-

-

-

-

-

-

-

-

CP-FH35

CP-FH50

-

CP-FH76

CP-FH76

CS-ROAD

-

✔

-

-

-

-

-

-

-

-

-

CP-FH08

CP-FH35

CP-FH31

-

-

-

8-speed

CS-HG60-81

-

-

-

-

✔

-

-

-

-

-

-

CP-WH12

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG51-8

-

✔

✔

-

-

-

-

-

-

-

-

CP-FH40

CP-FH35

CP-FH50

-

-

-

CS-HG51-8

-

-

-

-

✔

-

-

-

-

-

-

CP-WH12

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG41-8
CS-HG31-8

-

-

✔

-

-

-

-

-

-

-

-

CP-FH40

CP-FH35

CP-FH50

-

-

-

CS-HG41-8
CS-HG31-8

-

-

-

✔

✔

-

-

-

-

-

-

CP-WH12

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG400-8

-

-

-

-

-

-

✔

-

✔

-

-

-

-

-

-

-

-

CS-HG200-8

-

-

-

✔

-

-

-

-

-

-

-

CP-WH12

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

7-speed

CS-HG41-7

-

✔

-

-

-

-

-

-

-

-

-

CP-FH40

CP-FH35

CP-FH50

-

-

-

CS-HG200-7

-

-

-

✔

-

-

-

-

-

-

-

-

CP-FH56

CP-FH53

-

CP-FH76

CP-FH76

CS-HG200-7

-

✔

-

-

-

-

-

-

-

-

-

-

CP-FH35

CP-FH50

-

-

-