Unifilter's PRO COMP 2 (code UNI-NU-XXXX) Filters are traditional 2 stage filters for the professional Competition rider.
They provide the ultimate in dust retention levels, air flow and ease of service.
The Pro Comp 2 uses two separate filters, one on top of the other two create the two stages. The two layers are not glued or laminated together, as this process defeats the purpose by partially clogging the filter reducing its breathability.