ST5 Helmet Top Air Intake Z32 The B-Series 5-speed transmission gives

The B-Series 5-speed transmission gives you more flexibility since it comes in many different gearing options as opposed to the H-Series or F-Series models

Replaceable bearings

the ballast must be used

the PLM GT-R Intercooler Piping Kit uses 3" stainless steel

With hundreds of these sold to date

ST5 Helmet Top Air Intake Z32 The B-Series 5-speed transmission givesThe exclusive Stilo "Top Air System" for ST5 helmets takes fresh air to the driver's head and nose. With the innovative system for the airflow regulation you can favor the air flow on the driver's face for a better breathing or for cooling the driver's head. Thanks to the fixation system you can fit it more than once replacing the dedicated fixation tape. Comes with and without flow adjuster.