Full Face Helmet Guide: Motorcycle & MTB Ireland 2025

A full-face helmet is the single most important piece of safety gear for any rider on two wheels, yet many Irish cyclists and motorcyclists don’t realize how different the standards are between motorcycle and mountain bike versions. This guide breaks down what you need to know, from safety certifications to fit, so you can choose the right full-face helmet for your riding style.

Types of full face helmets: Motorcycle, MTB, E-bike, motorsport ·
Common safety certifications: ECE 22.06, DOT, Snell, ASTM F1952, CPSC ·
Average weight range: 1,200–1,800 g (motorcycle); 700–1,100 g (MTB) ·
Typical price range in Ireland: €80–€800 (motorcycle); €100–€500 (MTB)

Here is a summary of the key specifications for full face helmets across different uses.

What is a full face helmet?

Definition and purpose

• Full face helmets enclose the entire head, with a chin bar that protects the jaw and lower face in impacts.
• They are designed for activities where higher speeds and greater impact risks exist: motorcycling, mountain biking, motorsports.
• Unlike half-shell or open-face helmets, they offer complete 360° protection around the head.

A full face helmet is essentially a protective shell combined with an impact-absorbing EPS liner, a chin bar, and a visor. The chin bar is the defining difference — it absorbs energy in frontal crashes and prevents direct contact to the jaw. According to the Bicycle Helmet Safety Institute, MTB full face helmets certified to ASTM F1952 provide chin bar protection not covered by standard EN 1078 bicycle helmet regulations.

The implication: if you are riding downhill trails, a basic MTB helmet won’t protect your jaw in a forward impact.

Main components: shell, liner, visor, chin bar

• Outer shell: usually polycarbonate, fiberglass, or carbon fibre — spreads impact forces.
• EPS liner: crushes to absorb energy — multi-density layers improve performance.
• Chin bar: reinforced area covering the jaw, tested for deformation (ideal ~30mm according to Enduro MTB).
• Visor: integrated on motorcycle models (often with Pinlock anti-fog); removable on many MTB helmets.

What are the benefits of a full face helmet?

Enhanced facial protection

• Full face helmets reduce the risk of facial fractures by up to 97% compared to wearing no helmet at all, based on crash data from helmet testing programmes.
• They protect the chin, jaw, teeth, and cheekbones — areas commonly injured in motorcycle and mountain bike crashes.

In rollover incidents or collisions with obstacles, the chin bar can be the difference between a minor bruise and reconstructive surgery. Road Safety Authority Ireland emphasises that the helmet must be correctly fastened to provide this protection.

Reduced wind and noise

• Full coverage blocks wind noise and turbulence, reducing rider fatigue on long journeys.
• Integrated visors deflect air and rain, keeping eyes clear.

Motorcycle riders especially benefit from the quieter environment — the difference between a full face and an open face helmet at 100 km/h can be 10 dB or more, enough to prevent hearing damage over time.

Better aerodynamics and stability

• The smooth full-face shape reduces drag and lift at speed.
• Stability in crosswinds improves, making the helmet feel planted on the head.

The trade-off is weight: full face helmets are heavier. But modern materials have brought premium models down to 1,300 g for motorcycles and 750 g for MTB, which is manageable for most riders.

How do I choose the right full face helmet?

Measure your head circumference

• Use a flexible tape measure just above the eyebrows and ears — this gives your head size in centimetres.
• Most brands use a sizing chart (e.g., 55–56 cm = Small, 57–58 cm = Medium, 59–60 cm = Large).

A proper fit should be snug without pressure points. When you shake your head, the helmet should not move independently. The RevZilla guide to helmet safety ratings recommends trying on helmets for 10–15 minutes to check for hot spots.

Check safety certifications

• Motorcycle: look for ECE 22.05 or 22.06 (mandatory in Ireland), DOT (US), or Snell (racing).
• MTB: EN 1078 is the European baseline; ASTM F1952 is needed for downhill and enduro.
• ECE 22.06 is the latest European motorcycle standard — it includes oblique impact testing that simulates rotational forces.

The difference in test protocols is significant. According to Enduro MTB, the DIN EN 1078 bicycle standard requires two impacts (flat anvil from 1.5 m and curbstone from 1.07 m), while ASTM F1952 for full-face MTB helmets requires four impacts including the chin guard. For motorcycle helmets, ECE 22.05 tests eight headforms; DOT uses a single hemispherical anvil and allows peak g up to 400 g, whereas ECE limits it to 275 g (RevZilla).

Consider helmet type (motorcycle vs MTB)

• Motorcycle full face: heavier, more aero, integrated visor, Pinlock-ready.
• MTB full face: lighter, more ventilated, removable peak, lower chin bar for breathing.

Can you use a motorcycle helmet for mountain biking? Technically yes, but it will be heavier, less ventilated, and likely uncomfortable on climbs. Conversely, an MTB full face helmet is not certified for motorcycle speeds and should never be used on a motorbike.

Evaluate weight and ventilation

• Motorcycle helmets: weight affects neck fatigue; lighter carbon models cost more.
• MTB helmets: ventilation is critical for trail riding — look for multiple chin bar vents and deep internal channels.

The sweet spot for most Irish riders: a mid-range motorcycle helmet around 1,400–1,500 g with good venting, or an MTB full face under 950 g for aggressive trail use.

Try before you buy or check return policy

• Visit shops in Dublin like local retailers (check RSA list of approved helmet retailers).
• If buying online, ensure the seller offers free returns in case the fit isn’t right.

A helmet that doesn’t fit well is unsafe — it can shift in a crash and expose the forehead or chin. The Road Safety Authority Ireland advises that a helmet should be replaced if it has been in a significant impact, regardless of visible damage.

What is the best full face helmet for motorcycle riders?

Top recommendations by price range

• Budget (€80–€150): HJC C10 or LS2 FF320 — both ECE 22.05 certified, good basic protection.
• Mid-range (€200–€400): Shoei NXR 2, Arai Quantic, AGV K6 — widely available in Ireland, excellent safety ratings.
• Premium (€500–€800): Shoei X-Spirit 3, Arai RX-7V, AGV Pista GP RR — racing pedigree, often Snell or FIM certified.

According to RevZilla, the Shoei NXR 2 and Arai Quantic both earn top marks in their tests for quietness and fit consistency. For Irish weather, a Pinlock-ready visor is essential to prevent fogging on damp mornings.

Key features: noise isolation, weight, visor quality

• Noise isolation: premium helmets include thicker padding and tighter seals — expect 85–90 dB at 120 km/h vs 95+ dB for budget models.
• Weight: 1,500 g is typical; carbon models drop to 1,200 g.
• Visor quality: look for quick-release mechanisms, anti-scratch coating, and Pinlock Max Vision inserts.

Popular brands for Irish riders

• Shoei: Japanese brand, excellent build quality, popular in Irish shops.
• Arai: also Japanese, hand-made shells, known for fit comfort.
• AGV: Italian, used by Valentino Rossi, strong race focus.
• HJC: Korean, offers great value in budget and mid-range.

The catch: availability can vary. Shops like Cotter’s Motorcycles in Dublin stock many of these brands — be sure to try them in store.

What is the best full face helmet for mountain biking?

Differences from motorcycle helmets

• MTB full face helmets are significantly lighter (700–1,100 g vs 1,200–1,800 g).
• They have a lower chin bar profile for easier breathing during climbs.
• Ventilation is prioritised — many have 15+ vents and deep internal channels.
• Certification standards are different: EN 1078 for general MTB, ASTM F1952 for downhill and enduro.

Using a motorcycle helmet on a mountain bike is not advisable — the extra weight and poor ventilation will make climbing miserable, and the helmet may not provide adequate peripheral vision for trail riding.

Top MTB full face helmets

• Budget (€100–€200): Bell Sanction 2 (ASTM F1952, 820 g) — great entry-level downhill lid.
• Mid-range (€250–€350): Fox Rampage Pro Carbon (950 g, excellent ventilation) and Troy Lee Designs Stage (680 g, one of the lightest).
• Premium (€400+): Bell Full-9 MIPS (1,000 g, MIPS rotational liner) or Fox Rampage Full Face (980 g, fiberglass shell).

The Bicycle Helmet Safety Institute notes that ASTM F1952 certification is the gold standard for downhill — it includes chin bar impact tests that the basic EN 1078 does not require.

Fit and safety considerations for MTB

• MTB helmets often have a dial-fit system for micro-adjustment.
• Check that the chin bar does not obstruct breathing during heavy exertion.
• Consider models with MIPS or similar rotational impact protection.

For Irish riders who enjoy trail centres like Ballinastoe or the Dublin Mountains, a mid-range Fox Rampage Pro or Bell Full-9 offers great protection without breaking the bank.

Here is a direct comparison of motorcycle and MTB full face helmets across key metrics.

The pattern is clear: each helmet is engineered for a specific mix of speed, effort, and impact energy, so matching the helmet to your activity is non-negotiable.

Pros and cons of full face helmets

What’s confirmed — and what’s still unclear

Confirmed facts

• Full face helmets significantly reduce facial injury risk compared to no helmet or open-face designs (Road Safety Authority Ireland)
• ECE 22.06 is the current European motorcycle helmet standard, including oblique impact testing (RevZilla)
• ASTM F1952 is the specific standard for downhill mountain bike full face helmets (Enduro MTB)
• Motorcycle helmets in Ireland must meet ECE 22.05 or 22.06 (Road Safety Authority Ireland)

What’s still unclear

• The exact date when ECE 22.06 will become mandatory for all new motorcycle helmet sales in Ireland
• Comparative real-world crash performance of different MTB full face models (proprietary data limited)
• Whether lighter carbon shells offer less protection than heavier polycarbonate in multiple-impact scenarios

Expert perspectives on full face helmet safety

“A correctly fitted motorcycle helmet that meets ECE Regulation 22 is the single most important piece of safety equipment for any rider. It must be replaced after any significant impact.”

Road Safety Authority Ireland (Irish government road safety agency)

“When choosing a helmet, look for a good fit first, then check the certification label. A helmet that doesn’t fit cannot protect you properly.”

SHARP – Safety Helmet Assessment and Rating Programme (UK government helmet testing programme)

For Irish riders, the choice between a motorcycle and MTB full face helmet comes down to how you ride. If you’re on the road, a Shoei NXR 2 or AGV K6 with ECE 22.06 certification and a Pinlock visor will see you through Irish winters. If you’re on the trails, a Fox Rampage or Bell Full-9 with ASTM F1952 and MIPS will keep you safe on descents. For the two-wheel enthusiast who does both, the answer is clear: buy two helmets, each built for its purpose, because no single helmet can cover both worlds safely.

For mountain bikers, our full face MTB helmet guide covers the best models and where to buy them in Ireland.

Frequently asked questions

Related reading: Full face helmet safety standards and buying guide — detailed breakdown of regulations and model reviews.