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AT4.0 STREET
AT4.0 STREET is a lightweight fibreglass full-face motorcycle helmet. Built without compromise, STREET is our most affordable helmet yet. With ECE 22.06, DOT approval and full Bluetooth compatibility with our Shockwave unit, STREET is as safe as it is stylish.
Discover AT4.0 STREET
AT4.0 STREET Fit Guide
Find your size
We recommend:
How to measure
- With a fabric measuring tape, wrap it around your head just above your eyebrows and ears.
- Pull the tape comfortably tight. Take the measurement.
- Repeat once more and go with the largest reading.
Our motorcycle and snow helmet fit is an intermediate oval.
Returns policy
If the fit is not quite right our return process is simple. 14 days to exchange, picked up from home. See our returns page for more details.