Yamaha, 1975 MX 250/400, Air Filters, fits Various Models, see list below
Product #: YAM-NU-2221ST
| 1975 | Yamaha | MX 250/400 | NU-2221ST |
| 1976 | Yamaha | YZ 250/400 | NU-2221ST |
| 1976 | Yamaha | IT 400 | NU-2221ST |
Uni-Filter dirt bike air filters are unsurpassed in airflow, dirt stopping, and overall performance.