Uni-Filter Two-Stage Air Filter. For RM125 (04-07), RM250 (03-07), RMZ450 (05-06), YZ125/250 (93-09), YZ250F (01-09), YZ400F/426F/450F (98-09) & WR250F (01-02)
Uni-Filter's two-stage design provides maximum airflow and superior filtration abilities that have made Uni-Filter the choice of every motorcycle manufacturer worldwide. Two-stage design allows motorcycles to go longer before service is required. The coarse outer layer stops the larger particles and the fine pore inner layer gives the ultimate engine protection.