Message from Quiet Ride Helmet designer/inventor - Al Halfaker

Quiet Ride Helmets were tested for actual noise reduction so I could legally advertise noise reduction rating. Testing was performed by an authorized U.S. government auditory systems laboratory testing agency to legally advertise noise reduction rating on July 2nd, 2014. Quiet Ride Motocross helmets obtained a noise reduction rating of NRR 17 and Quiet Ride Full Face Helmets obtained a noise reduction rating of NRR 19 from a https://www.quietridehelmets.com/noise-reduction-test-doc/

Quiet Ride carbon fiber helmet shells are hand laid multiple layers of extremely strong carbonized Kevlar® fibers. They are much stronger than strongest helmet shells than vacuum molded composite shells. DOT approved carbon fiber helmets are the lightest helmet shells you can buy, but also the most expensive shells to manufacturing.

Quiet Ride fiberglass shells are hand laid multiple layers of fiberglass fiber cloth. They take a lot more time to produce versus vacuum molded composite shells and they are also stronger than composite shells and pass DOT testing.

Noise reduction muffs have two advantages to protect your hearing.
- Helmet speakers located in ear muffs create better sound quality for intercom communication or listening to music.
- Ear muff pad pressure around ears to block exterior noise from entering ears much more comfortable than forcing ear plugs into your
ear canal.

Quiet Ride Helmet will allow you to safely ride longer per of time day without damaging your hearing.
This fact will protect riders from developed tinnitus!!

Graphs of sound level in standard motorcycle helmets without earmuffs
versus
Quiet Ride helmets featuring noise reduction earmuffs that reduce sound level and protect hearing.

The graph on the upper right below shows the sound levels at various speeds from 35 mph to 65 mph riding a bare bike with a sound level meter connected to remote mic in the test riders' ear measuring sound levels a various speeds wearing no helmet in blue line, a standard full face or motocross helmet without earmuffs in black line, and a purple line wearing a full face or motocross helmet with Quiet Ride earmuffs.

The graph on the upper left and center shows recommendations for exposure to sound levels per day is cut half for every 3 decibels (dB) increase in sound level.

The graph in the lower left shows at approximately 55 mph wind noise is heard about the same amount as engine noise. At 65 mph wind sound is around 90% of sound heard. Bikers' riding stock exhaust motorcycles complain most about loud wind noise damaging their hearing when cruising at highway speeds.

The graph on the right below reflects sound levels of snowmobiles at or close to full throttle riding in deep mountain snow in the western U.S. states. Sound levels of engines are relatively constant at or close to full throttle as snowmobiles use a torque converter engine clutch system to maintaining constant rpm for engine power necessary to push through deep snow. As a result snowmobile engine sound levels between 10 and 35 mph remain constant. The graph below reflects higher sound levels present in turbo charged engines versus snowmobile stock engines without turbos.

Interesting sound level information!!

The Champion YouTube website, https://www.youtube.com/watch?v=HISjalhaeds is the only YouTube website I am aware of that actually provides accurate helmet sound levels at ears using a sound level meter connected to a remote mic installed in the test riders' ear while cruising at 80 mph (130 kph) on a BMW with an effective windshield that is effective at block some loud wind noise from entering the test riders' helmet.

Recently they posted the Quietest Helmets according to their sound level meter tests. Below are their results.

If the Champion YouTube Channel had tested Quiet Ride full face and motocross helmets for sound levels and add the information to the Quietest Motorcycle Helmets of 2025. I would have been called the "Top 11 Quietest Motorcycle Helmets of 2025 I Noise Tested on the Road".

I have attempted to contact every helmet manufacture listed in the picture above to see if one of them would be interested in installing my patented earmuff technology in their helmets. None of them have showed any interest installing my patented earmuff technology in their helmets which would be effective in protecting their customers hearing.

The NIOSH graph below show a sound level exposure of 88 decibels exposure of 4 hours per day would meet NIOSH recommendation for hearing protection. NIOSH recommends limiting exposure to 97 decibels per day to 30 minutes.

I have attempted to contact every helmet manufacture listed in the picture above to see if one of them would be interested in installing my patented earmuff technology in their helmets. None of them have showed any interest installing my patented earmuff technology in their helmets which would be effective in protecting their customers hearing.

So far I have not received any correspondence from any helmet factor that would be interested in installing noise reduction earmuff technology in a line of their helmet are interested that would protect their customers hearing!!