The Revolution Micro Helmet Air System forces up to 90 CFM of filtered fresh air directly through your helmet, driven by a hand-built, soft-start brushless motor housed in carbon fiber-reinforced thermoplastic housing. The blower draws outside air through the included 1.25in NACA duct intake, the detachable micro filtration unit keeps debris out, and airflow is adjustable through the conformal-coated dash control. The micro blower is sized to the 1.25-inch hose, so airflow is delivered without restriction losses. Every CFM the blower produces reaches your helmet. IN THE CASE 90 CFM brushless micro blower Left- and right-side mount NACA ducts Tool-free detachable in-line filter Wired full-display dash control Power cord Mounting hardware