The ‘Double D’ ring is at the moment the safest way to fasten a helmet. Other fasteners may be damaged easily or the build-up of dirt inside may influence the functioning of the device. Don’t forget that grand prix racers are obliged to use a similar system as the ‘Double D’ ring for racing use!
Why do Arai use a 'Double D' ring fastener? Print
Modified on: Wed, 9 Dec, 2015 at 5:47 PM
Did you find it helpful?Send feedback
Sorry we couldn't be helpful. Help us improve this article with your feedback.