Motorcycle helmet safety is nowhere near as simple as most riders think. A helmet can be road legal, expensive, popular or covered in impressive-looking labels, but that does not automatically mean it is the right helmet for you, in the right condition, or suitable for the way you are using it.
In this guide, we break down the main motorcycle helmet standards and markings riders often ask about, including ECE 22.06, ECE 22.05, DOT FMVSS 218, Snell, SHARP, FIM, ACU Gold and P/J homologation on flip-front helmets.
The key message is simple: a helmet does not protect you just because it has a label. It protects you because it is properly approved for your use, fits correctly, is in good condition, and is worn in the way it was designed to be used.
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Legal does not always mean sensible
One of the strangest things about motorcycle helmet rules is that some older approvals can still be legal in the UK. That can make the conversation confusing, because legal and sensible are not always the same thing.
For example, a helmet approved to BS 6658:1985 with the correct BSI Kitemark can still fall within the UK guidance for road use. That does not automatically mean a very old helmet is a good idea to ride in today.
Helmet materials age. Liners compress. Shells can suffer damage. Visors can mark or become brittle. Straps and fastenings can wear. A helmet may also have an unknown history, especially if it has been stored badly, dropped, crashed in, or bought second-hand.
A helmet can be legal and still be a poor choice if it is old, worn, damaged, badly fitted or unsuitable for how you ride.
Motorcycle helmet standards at a glance
Not all helmet standards and markings do the same job. Some are road approvals. Some are voluntary test standards. Some are consumer rating schemes. Some are intended for racing or competition use.
That is why it is important not to treat every logo or sticker as if it means the same thing.
Helmet standards do not all do the same job - some are road approvals, some are ratings, and some are used for racing or competition eligibility.
| Standard or marking | What it is | Main use |
|---|---|---|
| ECE 22.06 | Current UNECE road helmet approval | UK, Europe and other ECE markets |
| ECE 22.05 | Previous UNECE road helmet approval | Still recognised in UK guidance |
| DOT FMVSS 218 | US federal motorcycle helmet standard | United States market |
| Snell | Voluntary additional test standard | Performance and motorsport-focused helmets |
| SHARP | UK consumer safety rating scheme | 1 to 5 star helmet comparison rating |
| FIM | Racing homologation | Top-level racing and serious competition use |
| ACU Gold | Competition acceptance marker | ACU events and many UK track days |
ECE 22.06 vs ECE 22.05
In the UK, most current motorcycle helmets you see on the market will be approved to ECE 22.06. Before that, the major ECE standard was ECE 22.05.
ECE 22.06 is the newer and more demanding standard. Compared with ECE 22.05, it includes a broader testing approach, with more impact points, more focus on oblique or rotational impact behaviour, visor projectile testing, and more attention on helmet configurations and accessories.
That matters because real crashes are rarely perfect straight-line impacts. Riders can hit the ground or another object at an angle, slide, rotate, and experience several forces at once. ECE 22.06 was developed to reflect more of that real-world complexity.
ECE 22.06 is the newer and more demanding ECE standard, with broader testing than ECE 22.05.
DOT vs ECE - why the same helmet name can be different
DOT FMVSS 218 is the US motorcycle helmet standard. It is not the same as ECE 22.06, and it is not simply a different sticker for the same approval route.
This is where riders can get caught out. The same helmet model name can sometimes exist in different market versions. A helmet sold for the US market may be built, labelled and supplied for DOT requirements, while a version sold for the UK or European market may be built, labelled and supplied for ECE requirements.
That means you should not rely only on the model name, shell shape or graphic. Always check the actual approval label inside or on the helmet, especially if you are buying from abroad or comparing helmets between markets.
Two helmets can look almost identical, but the approval label tells you which market and standard that version was built around.
Snell explained
Snell is an independent helmet testing and certification programme that many riders associate with performance and motorsport use. It is usually seen as an additional standard rather than a replacement for a legal road approval.
The important thing to remember is that Snell does not automatically make a helmet road legal in the UK. If you are buying a helmet for road use, you still need to check the actual road approval that applies to where you ride.
For riders comparing high-performance helmets, Snell can be part of the wider picture, but it should not be treated as the only thing that matters.
SHARP, FIM and ACU Gold are not the same thing
SHARP, FIM and ACU Gold often get talked about together, but they are not interchangeable.
SHARP is a UK consumer helmet safety rating scheme. It gives helmets a 1 to 5 star rating, helping riders compare relative safety performance between tested helmets. SHARP is useful, but it is not a road-legal approval on its own.
FIM is racing homologation. It is designed for serious competition use and is especially relevant to high-level racing. A helmet with FIM homologation is aimed at a very different use case from a relaxed touring helmet.
ACU Gold is used for competition acceptance in ACU events and many UK track day settings. It is about eligibility for those environments, not a normal road-legal approval label.
SHARP is a consumer safety rating, FIM is racing homologation, and ACU Gold is a competition acceptance marker.
P/J homologation on flip-front helmets
Flip-front helmets create another common area of confusion. Just because the chin bar flips up does not automatically mean the helmet is approved to be ridden with the chin bar open.
That is where P/J homologation comes in. The P part refers to protective use with the chin bar closed. The J part refers to jet or open-face use with the chin bar open.
If a flip-front helmet is approved as P/J, it has been tested for use in both positions. If it is only approved as P, you should not assume it is approved for riding with the chin bar open.
P/J homologation means a flip-front helmet has been approved for use with the chin bar closed and open.
Visors, tints and accessories can affect approval
Helmet approval is not just about the shell. Visors, fitted accessories and helmet configuration can all matter.
For road riding, visor suitability is especially important. A clear visor is the safest all-round option for most conditions, while tinted or dark smoke visors need to be used carefully and legally. In the UK, very dark visors are not suitable for normal road use if they transmit less than the required level of visible light.
Accessories also deserve thought. Intercoms, action camera mounts and other add-ons can affect airflow, weight balance and impact behaviour. That does not mean every accessory is automatically a problem, but it does mean riders should use quality parts, fit them correctly and understand that altering the helmet from its approved configuration can matter.
Visor choice, fitted accessories and helmet configuration can affect how a helmet is intended to be used.
Helmet approval does not replace fit
A helmet can have the right approval and still fail you if it does not fit properly. Fit is one of the biggest parts of real-world protection.
A correctly fitted helmet should feel snug around the cheeks and crown of the head. It should not move around easily when you shake your head. It should not be painfully tight, but it should not feel loose or casual either.
Over time, helmet interiors compress. A helmet that once fitted well can become loose as the padding beds in. If the helmet starts to move, lift, rotate or feel sloppy, it is worth reassessing the fit.
If you are unsure how your helmet should fit, watch our helmet fit guide or visit the Moto Central showroom for help with sizing and shape.
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Condition matters as much as the label
Condition is just as important as approval. Before using any helmet, check the shell, visor, chin strap, visor mechanism, vents, liner and fastenings.
Look for cracks, damaged parts, loose components, deep scrapes, missing trim, tired straps or a liner that no longer holds the helmet securely. If the helmet has been in a crash, it should normally be replaced, even if the damage is not obvious from the outside.
The chin strap also needs to be fastened properly every time you ride. A helmet that is not securely fastened may move or come off in a crash, which defeats the purpose of wearing it.
Safe use is about approval, fit, condition and correct fastening - not just the label.
Useful official resources
If you want to check the official guidance behind helmet standards, these resources are a useful starting point:
Final thoughts
Motorcycle helmet standards matter, but they are only one part of the safety picture. ECE 22.06, ECE 22.05, DOT, Snell, SHARP, FIM and ACU Gold all mean different things, and understanding those differences helps you make a better decision.
Legal does not automatically mean safe for your situation. Expensive does not automatically mean suitable. A high rating does not fix poor fit. A modern approval does not help much if the helmet is worn out, damaged or used incorrectly.
The best helmet is the one that is properly approved for your use, fits correctly, is in good condition, is fastened securely, and suits the riding you actually do.
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