| Part # | Tooth Count | Description |
| 12-0075 | 40 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0076 | 41 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0077 | 42 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0078 | 43 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0079 | 44 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0080 | 45 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0081 | 46 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0052 | 47 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0053 | 48 | Honda CRF 250 (04-09)/450 (02-09) |
| 12-0054 | 49 | Honda CRF 250 (04-09)/450 (02-09) |
| Part # | Tooth Count | Descsription |
| 12-0085 | 40 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0086 | 41 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0087 | 42 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0088 | 43 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0089 | 44 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0090 | 45 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0091 | 46 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0092 | 47 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0093 | 48 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| 12-0094 | 49 | Kawasaki KX 250F/450F (04-09)/(06-09) |
| Part # | Tooth Count | Description |
| 12-0095 | 40 | KTM 125-525 (99-09) |
| 12-0096 | 41 | KTM 125-525 (99-09) |
| 12-0097 | 42 | KTM 125-525 (99-09) |
| 12-0098 | 43 | KTM 125-525 (99-09) |
| 12-0099 | 44 | KTM 125-525 (99-09) |
| 12-0100 | 45 | KTM 125-525 (99-09) |
| 12-0101 | 46 | KTM 125-525 (99-09) |
| 12-0102 | 47 | KTM 125-525 (99-09) |
| 12-0103 | 48 | KTM 125-525 (99-09) |
| 12-0104 | 49 | KTM 125-525 (99-09) |
| Part # | Tooth Count | Description |
| 12-0105 | 40 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0106 | 41 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0107 | 42 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0108 | 43 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0109 | 44 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0110 | 45 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0111 | 46 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0112 | 47 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0113 | 48 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0114 | 49 | Suzuki RMZ 250/450 (07-09)/ (05-09) |
| 12-0085 | 40 | Suzuki RMZ 250 (04-06) |
| 12-0086 | 41 | Suzuki RMZ 250 (04-06) |
| 12-0087 | 42 | Suzuki RMZ 250 (04-06) |
| 12-0088 | 43 | Suzuki RMZ 250 (04-06) |
| 12-0089 | 44 | Suzuki RMZ 250 (04-06) |
| 12-0090 | 45 | Suzuki RMZ 250 (04-06) |
| 12-0091 | 46 | Suzuki RMZ 250 (04-06) |
| 12-0092 | 47 | Suzuki RMZ 250 (04-06) |
| 12-0093 | 48 | Suzuki RMZ 250 (04-06) |
| 12-0094 | 49 | Suzuki RMZ 250 (04-06) |
| Part # | Tooth Count | Description |
| 12-0115 | 40 | YZ/WR 125-450 (99-09) |
| 12-0116 | 41 | YZ/WR 125-450 (99-09) |
| 12-0117 | 42 | YZ/WR 125-450 (99-09) |
| 12-0118 | 43 | YZ/WR 125-450 (99-09) |
| 12-0119 | 44 | YZ/WR 125-450 (99-09) |
| 12-0120 | 45 | YZ/WR 125-450 (99-09) |
| 12-0121 | 46 | YZ/WR 125-450 (99-09) |
| 12-0122 | 47 | YZ/WR 125-450 (99-09) |
| 12-0123 | 48 | YZ/WR 125-450 (99-09) |
| 12-0124 | 49 | YZ/WR 125-450 (99-09) |