Our quietest motorcycle helmet yet

Noise reduction & optimised acoustics
"ATLAS 4.0 was born of an aspiration to address concerns around the noise levels of previous models. Customer feedback, track testing and wind tunnel analysis told us exactly where we were against key competitors, as well as where key improvements could be made. Using this data we were able to build on the 3.0 foundation, reducing the airborne noise through aerodynamic optimisation and structure-borne noise through sound dampening technology integrated into the new liner.” -Head of Engineering

We’ve turned the noise down…by 57%*

Our quietest ATLAS ever

* From ATLAS 3.0 vs our leading competitor

What makes a motorcycle helmet noisy?

Several factors come into play with noise generation in a motorcycle helmet:

• Helmet shape

The shape of the helmet is intrinsically linked to its aerodynamics. Poor performance in this field, (flat, abrupt surfaces and protruding features) leads to high turbulence being generated around the shell, heard as wind noise.

• Shell Material

Some materials perform better than others in acting as a barrier to wind noise. Plastics and certain composites (eg. Glass Fibre) are good acoustic insulators, while lightweight composites (eg. Carbon Fibre) are susceptible to structural resonance and can amplify external noises.

• Sealing

A poorly sealed helmet will let more of the external airborne noise into the rider space, creating a greater perception of wind noise and irritating whistling

• Liner design

The internal liner of the helmet is the final barrier to noise transfer to the rider. A poorly constructed and fitting liner will lead to undamped vibration and noise ingress, and fail to prevent unwanted airflow movement around the riders head.

How have we made ATLAS 4.0 quieter?

To make the ATLAS 4.0 motorcycle helmet quieter we have made a few key modifications. For the internals, we have improved the contouring and construction of the liner system specifically around the neck and face, added a padded ‘ear bridge’ on the cheek pad and included a sound dampening insert that can be used in place of the shockwave speaker. This new insert consists of two layers, an acoustic base layer that aids in making the ride quieter, and a top comfort layer for a premium comfort feel. On the exterior we have deleted out features on the shell where possible, making the helmet smoother and more aerodynamically stable, reducing the resulting noisy turbulence.

What noise testing have we put the ATLAS 4.0 through?

The ATLAS 4.0 full-face motorcycle helmet has gone through multiple rounds of extensive testing. From wind tunnel testing at an external engineering facility, for repeatability and consistency, to real-world track testing at a local race circuit. Getting out on track, with thermocouple-laden racing gear, meant we could evaluate the helmet against turbulent wind speed, riding direction variation and bike sound.

Why do you want a quiet helmet?

Quiet is comfortable. A quieter helmet will lead to a much more enjoyable ride, without being distracted by any unwanted, externally generated noise.

View the testing data

Our aim with ATLAS 4.0 was to significantly improve the acoustic performance to make it our quietest motorcycle helmet yet. The extensive testing process included an on-track evaluation on exclusive testing days at Castle Combe and wind tunnel testing at the prestigious Silverstone Engineering Hub. Check out and download our acoustic analysis and data below.

Download PDF

Safety ECE 22.06

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