- Replaces air filter
- CNC machined polymer construction
- More power - 1-2 MPH increase or more in ¼ mile.
- Zero leak o-ring seal
- Turbulence free underside
- Race track use only
Remove your stock or aftermarket air cleaner for max power and MPH at the drag strip (ONLY!) without having to worry about air box pressure leaks or flow disturbances caused by using a modified stock filter!
Due to the oversized design of our StreetSmart and 4-2-1 Sidewinder exhaust systems, ANY additional airflow into the engine will boost power, with stock OR modified engines. (Gains are also noticed with other high performance exhausts....just usually not as large.)
Brock's Air Box Lid is for Race Use ONLY! DO NOT ride on the street without an air cleaner, serious engine damage can occur in a very short time period. In fact; we do not recommend the use of our air box lid at exceptionally dusty or sandy Drag strips.