Nora FairbanksBy Nora Fairbanks

Updated November 2026

Choosing a full face downhill bike helmet comes down to protection you can trust, a fit that stays put on rough descents, and enough ventilation that you can ride hard without overheating. This list compares six full face options against those criteria: recognized impact certifications such as ASTM F1952 and CPSC 1203, chin bar coverage, retention system quality, ventilation, weight and how the helmet works with goggles. Specifications below come from manufacturer listings and common owner feedback, not from any testing on our side.

Our top picks at a glance

  1. 1Fly Racing Rayce Full-Face Mountain Bike/BMX HelmetTOP CHOICEBest overallFly Racing Rayce Full-Face Mountain Bike/BMX HelmetView on Amazon
  2. 2OutdoorMaster MIPS Full Face MTB HelmetTOP CHOICEBest for dual certificationOutdoorMaster MIPS Full Face MTB HelmetView on Amazon
  3. 3ILM Full Face MTB Helmet with Wind GogglesTOP CHOICEBest for goggle usersILM Full Face MTB Helmet with Wind GogglesView on Amazon
  4. 4Leatt MTB Gravity 6.0 Carbon Full Face HelmetBest for carbon constructionLeatt MTB Gravity 6.0 Carbon Full Face HelmetView on Amazon
  5. 5Bell Servo Adult BMX HelmetBest for a classic fitBell Servo Adult BMX HelmetView on Amazon
  6. 6O'Neal Sonus Deft Mountain Bike HelmetBest for a comfortable all-day fitO'Neal Sonus Deft Mountain Bike HelmetView on Amazon

Our Top Picks

Product Best for Key feature
Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet Serious downhill riders wanting DH certification ASTM F1952 DH rating with a removable liner
OutdoorMaster MIPS Full Face MTB Helmet Riders who want a MIPS-equipped lid MIPS liner and 27 vents
ILM Full Face MTB Helmet with Wind Goggles Riders who ride with goggles Goggle channel and EPP chin guard
Leatt MTB Gravity 6.0 Carbon Full Face Helmet Riders prioritizing a light, ventilated carbon shell Carbon shell with maximized ventilation
Bell Servo Adult BMX Helmet Riders wanting a traditional full face profile Matte black full face design
O’Neal Sonus Deft Mountain Bike Helmet Riders who spend long days on the bike Comfort-focused padding and fit

Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet

Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet – ASTM F1952 DH Certified, CPSC 1203, CE EN1078, Poly-Alloy Shell, TFV Ventilation, Removable Liner

Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet – ASTM F1952 DH Certified, CPSC 1203, CE EN1078, Poly-Alloy Shell, TFV Ventilation, Removable Liner

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Best for: Serious downhill riders who want a helmet with downhill-specific certification.

This is a full face helmet aimed at riders running gravity-focused trails, bike parks and race courses. Its listing calls out a poly-alloy shell and a removable liner, which matters for riders who want to keep the helmet clean after muddy runs.

Key specs

  • ASTM F1952 downhill certification
  • CPSC 1203 and CE EN1078 compliance
  • Poly-alloy shell
  • TFV ventilation system
  • Removable liner

Pros

  • Carries ASTM F1952 downhill certification, which is the standard most relevant to this category
  • Removable liner simplifies cleaning
  • Ventilation is designed for climbing between runs

Cons

  • Fit can run snug for riders with wider head shapes; check sizing carefully
  • Heavier than carbon options

Bottom line: A strong choice for riders who want DH-rated protection and a practical, easy-to-clean helmet for regular park or race use.

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OutdoorMaster MIPS Full Face MTB Helmet

MIPS Safety, Fits 54-62cm, PC+EPP, 27 vents, Washable liner, 2 D-rings, Goggle channel, Visor, For downhill/MTB/BMX OutdoorMaster MIPS Full Face MTB Helmet, Lightweight Ventilated for DH

MIPS Safety, Fits 54-62cm, PC+EPP, 27 vents, Washable liner, 2 D-rings, Goggle channel, Visor, For downhill/MTB/BMX OutdoorMaster MIPS Full Face MTB Helmet, Lightweight Ventilated for DH

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Best for: Riders who want a MIPS-equipped full face helmet for downhill and BMX riding.

This helmet pairs a PC and EPP construction with MIPS, a rotational impact liner designed to reduce angular forces. It suits riders who want a lot of ventilation and a washable liner in a helmet built for downhill, MTB and BMX.

Key specs

  • MIPS rotational protection system
  • Fits 54–62 cm head circumference
  • PC and EPP construction
  • 27 vents
  • Washable liner, two D-rings, goggle channel and visor

Pros

  • MIPS liner adds rotational protection
  • Wide size range covers many adults
  • Goggle channel and visor included

Cons

  • Certification details are less prominent than on higher-profile DH-certified helmets; confirm the specific standards on the listing
  • Vent count is high, so it can feel airy in cold conditions

Bottom line: Good for riders who prioritize MIPS and ventilation and want a helmet that works across downhill and BMX.

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ILM Full Face MTB Helmet with Wind Goggles

CPSC ASTM Certified, Upgraded Impact-absorbing GEPS Foam, EPP Chin Guard, with Wind Goggles, for Off Road Ebike Dirt Bike ILM Mountain Bike MTB Full Face Helmet Adults Adjustable Size Dial BMX HT58

CPSC ASTM Certified, Upgraded Impact-absorbing GEPS Foam, EPP Chin Guard, with Wind Goggles, for Off Road Ebike Dirt Bike ILM Mountain Bike MTB Full Face Helmet Adults Adjustable Size Dial BMX HT58

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Best for: Riders who ride with goggles and want a helmet that includes eye protection.

This listing bundles a full face helmet with wind goggles and emphasizes an EPP chin guard and adjustable size dial. It targets riders who want a complete kit for ebike, dirt bike and MTB use.

Key specs

  • CPSC and ASTM certification as stated on the listing
  • Impact-absorbing foam with EPP chin guard
  • Adjustable size dial
  • Includes wind goggles

Pros

  • Goggles are included, which adds value for riders starting out
  • Size dial makes fine adjustments easy
  • EPP chin guard adds impact absorption at the jaw

Cons

  • Brand has less of a track record in downhill racing than the best-known names
  • Goggles are generally less robust than premium standalone eyewear

Bottom line: A practical bundle for riders who want a full face helmet and goggles together, especially those newer to aggressive riding.

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Leatt MTB Gravity 6.0 Carbon Full Face Helmet

Leatt MTB Gravity 6.0 Carbon Full Face Helmet | Maximized Ventilation DH Downhill Bike

Leatt MTB Gravity 6.0 Carbon Full Face Helmet | Maximized Ventilation DH Downhill Bike

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Best for: Riders who want a lightweight carbon full face helmet with strong ventilation.

Leatt is known for neck and head protection products in downhill and motocross. This model uses a carbon shell and is positioned as a maximized-ventilation downhill helmet for riders who ride long sessions.

Key specs

  • Carbon full face shell
  • Maximized ventilation design
  • Built for downhill mountain biking

Pros

  • Carbon shell is generally lighter than composite alternatives
  • Ventilation is a focus of the design
  • Established brand in protective gear

Cons

  • Higher-end construction means a premium option in this list
  • Fit and sizing should be checked carefully against your head measurements

Bottom line: Best for riders who value weight savings and airflow and are comfortable investing in a premium carbon lid.

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Bell Servo Adult BMX Helmet

Bell Servo Adult BMX Helmet, Matte Black

Bell Servo Adult BMX Helmet, Matte Black

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Best for: Riders wanting a traditional full face BMX-style profile on a budget.

The Bell Servo is a long-established full face BMX helmet. It is a budget pick in this group and suits riders who mainly ride jumps, dirt and skate-park style terrain rather than long gravity runs.

Key specs

  • Full face BMX design
  • Matte black finish
  • Adult sizing

Pros

  • Well-known brand with a long history in BMX
  • Simple, classic styling
  • Budget-friendly relative to premium DH helmets

Cons

  • Not marketed with the same downhill-specific certification as the top picks
  • Older design may lack modern ventilation features

Bottom line: A sensible choice for BMX and casual park riders who want a traditional full face lid without a premium price tag. For sustained downhill racing, a DH-certified model is a better fit.

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O’Neal Sonus Deft Mountain Bike Helmet

O'Neal Sonus Deft Mountain Bike Helmet Olive/Orange, Large

O'Neal Sonus Deft Mountain Bike Helmet Olive/Orange, Large

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Best for: Riders who spend long days on the bike and want comfort alongside full face coverage.

O’Neal is a well-regarded name in motocross and mountain bike protection. The Sonus Deft is positioned as a comfortable full face option for riders who want a helmet they can wear through long trail days.

Key specs

  • Full face mountain bike design
  • Olive and orange colorway, large size listed

Pros

  • O’Neal has a solid reputation in protective gear
  • Comfort-oriented padding and fit
  • Good option for riders who ride long sessions

Cons

  • Check listing details for current certification information before buying
  • Limited spec detail in the listing compared with some competitors

Bottom line: A comfortable full face choice for riders who want all-day wearability and a reputable brand.

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Buying Guide

Certification and standards

Look for a helmet that states the standard it meets. ASTM F1952 is the downhill-specific standard in the United States, while CPSC 1203 is the consumer safety standard for bicycle helmets. Europe uses EN1078 and, for some full face designs, additional testing. A listing that names its standards gives you something to verify.

Good picks for this: Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet, OutdoorMaster MIPS Full Face MTB Helmet

MIPS and rotational protection

MIPS is a low-friction liner that allows the head to rotate slightly during an angled impact, which can reduce rotational forces. Not every full face helmet includes it, so check the listing if this matters to you.

Good picks for this: OutdoorMaster MIPS Full Face MTB Helmet, Leatt MTB Gravity 6.0 Carbon Full Face Helmet

Fit and sizing

Measure your head circumference about one inch above your eyebrows and compare it to the manufacturer’s size chart. The helmet should sit level, snug without pressure points, and stay in place when you shake your head. A chin bar that sits too far from your chin reduces protection.

Good picks for this: O’Neal Sonus Deft Mountain Bike Helmet, Bell Servo Adult BMX Helmet

Chin bar and jaw coverage

Full face protection depends on the chin bar. Check that the chin guard covers the jaw fully and that the padding and EPP or foam structure extend far enough forward. Some riders find a chin bar that sits slightly further out gives better coverage.

Good picks for this: ILM Full Face MTB Helmet with Wind Goggles, Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet

Ventilation and weight

Full face helmets trap more heat than open designs. Count vents and look at airflow channels, but also consider weight. Lighter helmets reduce neck fatigue on long climbs. Carbon shells are typically lighter than composite or polycarbonate shells.

Good picks for this: Leatt MTB Gravity 6.0 Carbon Full Face Helmet, OutdoorMaster MIPS Full Face MTB Helmet

Goggle compatibility

If you ride with goggles, check for a goggle channel or a visor that clears the goggle strap. A helmet that fits poorly with goggles can leave gaps where dust and debris enter.

Good picks for this: ILM Full Face MTB Helmet with Wind Goggles, OutdoorMaster MIPS Full Face MTB Helmet

Care and replacement

Clean the liner and pads according to the manufacturer’s instructions, typically with mild soap and water. Replace any helmet that has taken a significant impact, even if the damage is not visible. Manufacturers generally advise replacing helmets after a crash and periodically based on age and use.

Good picks for this: Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet, Bell Servo Adult BMX Helmet

FAQ

What is the difference between a full face downhill helmet and a standard MTB helmet?

A full face helmet covers the chin and jaw, while a standard trail helmet leaves them open. Full face designs are generally used for downhill, BMX and dirt riding where the risk of face impacts is higher.

Do I need a helmet with ASTM F1952 certification?

If you ride downhill courses or bike parks, a helmet certified to ASTM F1952 is the standard most relevant to that use. Check the listing for the exact standards it meets.

Is MIPS necessary?

MIPS is an added layer of rotational protection. It is not required by most standards, but many riders choose helmets that include it. Confirm the feature on the listing before buying.

How should a full face helmet fit?

It should feel snug on all sides, sit level on your head, and not move when you shake your head. The chin bar should sit close to your chin without pressing on it.

Can I wear goggles with a full face helmet?

Many full face helmets include a goggle channel or visor designed to fit goggle straps. Check the design before buying goggles separately.

How often should I replace my helmet?

Replace any helmet after a crash involving impact. Manufacturers also recommend periodic replacement based on age and wear, so check the owner’s manual or the brand’s guidance.

Are carbon full face helmets better than polycarbonate ones?

Carbon shells are generally lighter, but protection depends on certification and construction, not material alone. Compare the standards each helmet meets before deciding.

Conclusion

For riders who want the strongest downhill certification, the Fly Racing Rayce is a solid starting point. Those who want MIPS and high ventilation should look at the OutdoorMaster MIPS model. Riders who ride with goggles may prefer the ILM bundle, while the Leatt carbon helmet suits those who prioritize weight. The Bell Servo works well for traditional BMX-style riding, and the O’Neal Sonus Deft suits riders who want comfort over long days. Always confirm certifications and fit before you buy, and consult a qualified bike fitter or retailer if you are unsure about sizing.

Sources

Nora Fairbanks

About Nora Fairbanks

Nora puts together our bike accessories guides, digging through specifications, manufacturer details and owner reviews so you don't have to.