A motorcycle helmet buckle is the part on the end of the helmet strap that, when the 2 parts are connected together, holds the helmet securely on your head.
There are (in very basic terms!) 3 different motorbike helmet buckles, the quick release buckle, the ‘Double D’ buckle and the micro metric buckle……
The Quick Release Style Helmet Buckle
View of a closed quick release buckle on an AGV helmet.
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Close up view of a closed quick release buckle on an AGV helmet.
A quick release buckle in the ‘open’ position on an AGV helmet.
Close up view of an open quick release buckle on an AGV helmet.
The quick release buckle (also known as the seat belt style buckle) is an easy to use buckle where a metal end part (usually with a hole in it) goes into a spring operated catch (this system works similar to a seatbelt on a car).
The strap length is usually adjusted using metal length adjusters on the strap. Although the buckle pictured above on an AGV helmet is difficult to operate with gloves still on, there are many different versions and styles of this buckle, some of which can be operated with gloves on (these usually have a push button opening mechanism).
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The Micro Metric Style Helmet Buckle
View of a closed Micro Metric buckle on a Nitro helmet.
Close up view of a closed Micro Metric buckle on a Nitro Motorcycle helmet.
View of an open Micro Metric buckle on a Nitro Motorcycle helmet.
Close up view of an open Micro Metric buckle on a Nitro Motorcycle helmet.
The ‘Micro Metric’ buckle system works by using a ‘toothed’ tad on the end of 1 strap which goes into a spring operated ratchet on the end of the other strap (the basic principle of this system is similar to a reusable cable tie).
The Micro Metric buckle can be operated with gloves on and the strap length is normally adjusted by using metal length adjusters on 1 of the straps. The fitment and length of the strap can be fine tuned using the toothed tab and ratchet system (the toothed tab doesn’t have to go all the way into the ratchet to be closed). Micro Metric buckle explained in full….
The Double D Style Helmet Strap
View of a closed Double D strap on an Arai helmet.
Close up view of a closed Double D strap on an Arai helmet.
View of an open Double D strap on an Arai helmet.
Close up view of an open Double D strap on an Arai helmet.
The ‘Double D’ helmet strap system is probably the oldest, simplest and (arguably!) the safest strapping system for motorcycle helmets.
The Double D system doesn’t contain any ratchets and works by putting 1 end of the strap through both of the metal ‘D’ rings on the other strap, then looping the strap back through the 1st ‘D’ ring to secure it.
Although the downside of this system means it is very difficult (or near enough impossible!) to operate with gloves on, the simple design means it hardly ever fails and always has to be adjusted to the correct tension when you put the helmet on.
If you’ve got any questions or know of any buckle styles we’ve missed please leave a comment below…..