RAD filter cage: - This Air Filter Cage allows you to remove your stock power robbing air filter screen and cage. The RAD cage provides optimum airflow by funneling the air directly into the intake boot. Utilizing the stock Air Filter and OEM hardware! RAD Intake tube: - Injection Molded from Stronger and more Durable materials! - Tapered design from 50mm to 28mm - Allows an increase in air velocity, maintaining good low end throttle response - Works with stock and 24mm (Grom) throttle bodies - Pairs perfectly with the RAD airfilter cage for smooth airflow - No cutting or drilling required