KTM, 1982-96, 500/540/550, Air Filter, fits Various Models, see list below
Product #: NU-1406ST
Uni-Filter dirt bike air filters are unsurpassed in airflow, dirt stopping, and overall performance.
| 1987-91 | KTM | 125/350 2 Stroke | NU-1406ST |
| 1985-89 | KTM | 250 | NU-1406ST |
| 1982-96 | KTM | 500/540/550 2 Stroke | NU-1406ST |