COBRA Air Filter - Replacement 99-0702P-SB XD-4/VX-Pro3/VX-Pro4 Helmet Liner — 2XL tunes and adjusts your air/fuel

tunes and adjusts your air/fuel ratio for peak performance instantaneously Can fine-tune the non-acceleration air/fuel curves using the Bluetooth® app Works with stock or modified engines

The Fi2000R O² digital fuel processor is designed to work with all H-D exhaust systems (stock or aftermarket) equipped with oxygen sensors in place (closed-loop design) Works much like a carburetor jet kit with adjustments similar to the air-mixture screw

Aramid plates have high-density compound for increased durability

6061-T6 billet aluminum

COBRA Air Filter - Replacement 99-0702P-SB XD-4/VX-Pro3/VX-Pro4 Helmet Liner — 2XL tunes and adjusts your air/fuelHigh flow air filter element ensures the best air intake and maximum protection for your engine Made in the U. S. A.