CNC machined for precision and tight tolerances. Heat treated for ultimate combination of hardness and abrasion resistance. Rear Sprockets are made of heat treated 7075-T6 aluminum. Self cleaning mud grooves to prevent dirt build up. Lightweight computer aided design for increased performance.
| Model/Year | Year |
OEM Gearing |
Countershaft |
Rear Aluminum |
| Honda | ||||
| XR50 | 86-03 |
37-14 |
15T - 799001 |
|
| CRF50 | 04-09 |
37-14 |
||
| CR80 | 86-95 |
49-15 |
15T - 799001 |
49T - 799200 |
| CR80 | 96-02 |
49-15 |
50T - 799201 |
|
| CR80 Expert | 96-02 |
55-15 |
51T - 799202 |
|
| CR85 | 03-07 |
50-15 |
52T - 799203 |
|
| CR85 Expert | 03-04 |
56-15 |
||
| CR85 Expert | 05-07 |
55-15 |
||
| CR125 | 87-96 |
51-13 |
12T - 799005 |
48T - 799205 |
| CR125 | 1997 |
49-12 |
13T - 799006 |
49T - 799206 |
| CR125 | 98-99 |
52-13 |
14T - 799007 |
50T - 799207 |
| CR125 | 00-01 |
52-13 |
51T - 799208 |
|
| CR125 | 02-03 |
51-13 |
52T - 799209 |
|
53T - 799210 |
||||
| CR125 | 04-07 |
52-13 |
12T - 799015 |
48T - 799205 |
| CRF250R | 04-09 |
51-13 |
13T - 799016 |
49T - 799206 |
| CRF250X | 04-09 |
49-13 |
14T - 799017 |
50T - 799207 |
51T - 799208 |
||||
52T - 799209 |
||||
53T - 799210 |
||||
| CR250 | 88-91 |
51-14 |
14T - 799011 |
48T - 799205 |
| CR250 | 92-95 |
49-13 |
15T - 799012 |
49T - 799206 |
| CR250 | 96-01 |
50-13 |
16T - 799013 |
50T - 799207 |
| CR250 | 02-03 |
48-13 |
51T - 799208 |
|
| CR250 | 2004 |
50-13 |
52T - 799209 |
|
| CR250 | 05-07 |
49-13 |
53T - 799210 |
|
| CRF450R | 02-03 |
50-13 |
||
| CRF450R | 04-09 |
48-13 |
||
| CRF450X | 05-09 |
51-13 |
||
Revised 2/21/09-112