Product 
Teeth 
Length
Through
Bore 
Hub Dia. 
Extension 
SPROCKET #78/81X

7
8
9
10
11
12
13
14
15

3"
3"
3"
3"
3"
3"
3"
3"
3" 
4"
4"
4"
4"
4"
41/2"
41/2"
41/2"
41/2" 
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X 
SPROCKET #82 
8
9
10
11
12
13
14
15

31/4"
31/4"
31/4"
31/4"
31/4"
31/4"
31/4"
31/4" 
4"
4"
4"
4"
4"
4"
4"
4" 
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X 
SPROCKET #124 

4"
4"
4"
4"
4"

5"
5"
5"
5"
5" 
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X 
SPROCKET #131/138 

3"
3"
3"
3"
3"
3" 
4"
4"
4"
4"
4"
4" 
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X 
SPROCKET #132 
8
9
10
11
12

6"
6"
6"
6"
6" 
81/2"
81/2"
81/2"
81/2"
81/2" 
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X
A,B,C,D,S,X 

