AIThis post was created with the assistance of artificial intelligence (AI).

The best convertible full-face bike helmets balance coverage, comfort and the option to ride with or without a chin bar. My best overall pick is the Leatt MTB Enduro 4.0, which pairs a removable chin bar with a trail-oriented design; the Bell Super DH MIPS is a standout for riders who prioritize its named rotational-impact system, while the Fly Racing Rayce is a downhill-certified choice for those who want a fixed full-face helmet. The main tradeoff is that removable-chin-bar versatility can add complexity and may not suit every downhill use case. Fit, certification and the intended riding discipline matter more than a long feature list. Read on for how the seven options compare and which one fits your riding.

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7
compared
6
brands
3
certifications
Which convertible full-face bike helmet should you buy?
★ Top Pick
Fly Racing Rayce Full-Face Mou
Best for Dedicated Downhill Riding
ASTM F1952-15 downhill certification, plus CPSC 1203 and CE EN1078
See on Amazon →
Mountain bikers who want a removable chin guard, use goggles, and need one helmet for both descents and less technical riding.
OUMURS Adult Full Face Mountai
Removable chin guard supports two riding configurations
View on Amazon →
Riders with a 55–58 cm head measurement who want a convertible helmet with goggles included.
OUMURS Adult Full Face Mountai
Published 55–58 cm size range helps buyers check basic fit compatibility
View on Amazon →
Enduro and e-bike riders who want a removable chin bar and a helmet listing both downhill and S-EPAC certifications.
Leatt MTB Enduro 4.0 Helmet Fu
Removable chin bar adapts the helmet to different riding situations
View on Amazon →
Downhill riders seeking a convertible helmet with listed MIPS and Spherical Technology, multiple sizes, and a tool-free chin bar.
Bell Super DH MIPS
Lists both MIPS and Spherical Technology
View on Amazon →
Pros & cons at a glance
Fly Racing Rayce Full-Face Mou
✓ ASTM F1952-15 downhill certification, plus CPSC 1203 and CE EN1078
✗ Fixed full-face design offers less versatility than convertible options in this roundup
OUMURS Adult Full Face Mountai
✓ Removable chin guard supports two riding configurations
✗ No exact weight or size range is provided in the product details
OUMURS Adult Full Face Mountai
✓ Published 55–58 cm size range helps buyers check basic fit compatibility
✗ Stated size range is limited and may exclude many riders
Leatt MTB Enduro 4.0 Helmet Fu
✓ Removable chin bar adapts the helmet to different riding situations
✗ The supplied size is S only, listed for 51–55 cm
Bell Super DH MIPS
✓ Lists both MIPS and Spherical Technology
✗ No measured weight is provided, and the full-face design may feel heavy
ILM Mountain Bike MTB Full Fac
✓ Full-face coverage with polycarbonate and EPP materials
✗ Listed weight of 1.6 pounds may feel heavy on longer rides
OutdoorMaster Full Face Mounta
✓ 27 vents support airflow during demanding rides
✗ At 0.8 kg, it may feel heavy to riders seeking a lightweight setup

Complete the kit

Under Armour Squeeze Water Bottles, 32 oz Water Bottles,...
Under Armour Squeeze Water Bottles, 32 oz Water Bottles,…
Add to your setup →
Gatorade 32 Oz Squeeze Water Sports Bottle - Pack of 2 -...
Gatorade 32 Oz Squeeze Water Sports Bottle – Pack of 2 -…
Add to your setup →
32oz Insulated Water Bottle with Straw Spout Handheld Device
32oz Insulated Water Bottle with Straw Spout Handheld Device
Add to your setup →

Key Takeaways

  • Leatt MTB Enduro 4.0 and Bell Super DH MIPS are the actual convertible options in this lineup; the other models are full-face alternatives, not direct substitutes if you need a removable chin bar.
  • Fly Racing Rayce has the clearest downhill-certification detail in its listed specifications, including ASTM F1952, while certification claims for other models should be checked on the exact version and size.
  • The Leatt and Bell picks serve different priorities: removable-bar versatility is central to the Leatt, while the Bell’s MIPS designation is its distinguishing safety feature.
  • Three listings offer little basis for separate recommendations: the two OUMURS entries have the same product name, so buyers should verify the exact model, fit and included goggles before choosing between them.
  • Helmet fit and intended discipline outrank accessories; goggles, a size dial or a lighter build cannot compensate for a loose fit or a helmet unsuited to the riding involved.
2
OUMURS Adult Full Face Mountai
Best Convertible Pick for Goggle Users
1
Fly Racing Rayce Full-Face Mou
Best for Dedicated Downhill Riding
3
OUMURS Adult Full Face Mountai
Best for Buyers Who Need a Stated Size Range

Our Top Best Convertible Full-face Bike Helmets Picks

Fly Racing Rayce Full-Face Mountain Bike/BMX HelmetFly Racing Rayce Full-Face Mountain Bike/BMX HelmetBest for Dedicated Downhill RidingShell material: Poly-alloyCertifications: ASTM F1952-15, CPSC 1203, CE EN1078Weight: 930 g (size M)VIEW LATEST PRICESee Our Full Breakdown
OUMURS Adult Full Face Mountain Bike Helmet with GogglesOUMURS Adult Full Face Mountain Bike Helmet with GogglesBest Convertible Pick for Goggle UsersModel number: ZL-B068Shell: Monocoque high-strength shellImpact foam: EPS foamVIEW LATEST PRICESee Our Full Breakdown
OUMURS Adult Full Face Mountain Bike Helmet with GogglesOUMURS Adult Full Face Mountain Bike Helmet with GogglesBest for Buyers Who Need a Stated Size RangeShell: Monocoque high-strength shellImpact foam: EPS foamCertifications: CPSC, ASTM F1447, ASTM F1952, CE EN1078VIEW LATEST PRICESee Our Full Breakdown
Leatt MTB Enduro 4.0 Helmet Full Face with Removable Chin BarLeatt MTB Enduro 4.0 Helmet Full Face with Removable Chin BarBest for E-Bike and Enduro VersatilityModel: Enduro 4.0Size: S (51–55 cm)Weight: 12.96 ozVIEW LATEST PRICESee Our Full Breakdown
Bell Super DH MIPSBell Super DH MIPSBest Premium Impact-Technology PickShell material: PolycarbonateImpact technologies: MIPS, Spherical TechnologySizes: Small (52–56 cm), Medium (55–59 cm), Large (58–62 cm)VIEW LATEST PRICESee Our Full Breakdown
ILM Mountain Bike MTB Full Face Helmet Adults Adjustable Size Dial BMX HT58ILM Mountain Bike MTB Full Face Helmet Adults Adjustable Size Dial BMX HT58Best for Washable, Adjustable FitModel: HT58Helmet type: Full faceMaterial: Polycarbonate (PC), Expanded Polypropylene (EPP)VIEW LATEST PRICESee Our Full Breakdown
OutdoorMaster Full Face Mountain Bike Helmet, Lightweight for BMX/DHOutdoorMaster Full Face Mountain Bike Helmet, Lightweight for BMX/DHBest for Ventilation and Goggle SetupModel name: RhinoModel number: 803922Material: PC + EPPVIEW LATEST PRICESee Our Full Breakdown
Specs at a glance
convertible full-face bike helmetCertificationsWeightVentilation
Fly Racing Rayce Full-Face MouASTM F1952-15, CPSC 1203, CE EN1078930 g (size M)TFV airflow system
OUMURS Adult Full Face MountaiCPSC, ASTM F1447, ASTM F1952, CE EN1078—Multi-channel vents
OUMURS Adult Full Face MountaiCPSC, ASTM F1447, ASTM F1952, CE EN1078—Multi-channel vents
Leatt MTB Enduro 4.0 Helmet FuASTM F1952-10, NTA 8776 S-EPAC, CPSC 1203, EN1078, AS/NZS 2063:200812.96 oz—
Bell Super DH MIPS———
ILM Mountain Bike MTB Full Fac—1.6 pounds—
OutdoorMaster Full Face Mounta—0.8 kg27 vents

More Details on Our Top Picks

  1. Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet

    Fly Racing Rayce Full-Face Mountain Bike/BMX Helmet

    Best for Dedicated Downhill Riding

    View Latest Price

    The Fly Racing Rayce is the clearest pick here for riders who want a conventional full-face helmet built around downhill and gravity use, rather than a chin bar that comes off for trail climbs. Its ASTM F1952-15 certification, alongside CPSC and CE standards, gives its safety credentials a specific downhill focus. At 930 g in size M, it is described as lightweight, though riders prioritizing a two-mode setup may prefer the removable chin bars on the Leatt MTB Enduro 4.0 or Bell Super DH MIPS. TFV ventilation and a washable liner suit warm, dusty riding and regular use. The tradeoff is flexibility: the fixed full-face format is less convenient on long climbs, and the listed weight may still feel substantial to riders seeking the lightest possible helmet.

    Pros:
    • ASTM F1952-15 downhill certification, plus CPSC 1203 and CE EN1078
    • TFV ventilation system supports airflow during warm, demanding rides
    • Removable, washable liner makes post-ride cleaning easier
    • Adjustable visor uses aluminum hardware
    Cons:
    • Fixed full-face design offers less versatility than convertible options in this roundup
    • 930 g in size M may feel heavy to riders seeking an ultralight helmet
    • Available color choices are limited based on the supplied product information

    Best for: Downhill, BMX, and gravity riders who want a certified full-face helmet with washable padding and do not need a removable chin bar.

    Not ideal for: Trail riders who often climb in half-shell mode or want the added flexibility of the Leatt Enduro 4.0 or Bell Super DH MIPS.

    • Shell material:Poly-alloy
    • Certifications:ASTM F1952-15, CPSC 1203, CE EN1078
    • Weight:930 g (size M)
    • Ventilation:TFV airflow system
    • Liner:Removable and washable
    • Visor:Adjustable with aluminum hardware
    • Chin strap:D-ring
    • Intended use:Downhill, BMX, gravity riding
    Our verdict
    “Choose the Rayce if downhill-focused certification and easy liner care matter more to you than a removable chin bar.”
  2. OUMURS Adult Full Face Mountain Bike Helmet with Goggles

    OUMURS Adult Full Face Mountain Bike Helmet with Goggles

    Best Convertible Pick for Goggle Users

    View Latest Price

    The OUMURS ZL-B068 pairs a removable chin guard with goggle compatibility, making it a practical fit for riders who want full-face coverage on descents and a less enclosed setup for easier trail sections. Its listed certifications include CPSC, ASTM F1952, ASTM F1447, and CE EN1078, while the EPS foam and monocoque shell describe its core construction. Compared with the fixed full-face Fly Racing Rayce, the OUMURS offers more riding-mode flexibility; the Rayce, by contrast, provides a listed measured weight, while this helmet is only described as lightweight. Multi-channel vents and a washable liner add everyday convenience. The main uncertainty is that the supplied details do not give a precise weight or size range, which makes fit and heft harder to judge before buying.

    Pros:
    • Removable chin guard supports two riding configurations
    • Listed CPSC, ASTM F1952, ASTM F1447, and CE EN1078 certifications
    • Goggle compatibility and adjustable fit are specified
    • Multi-channel vents and washable liner support comfort and upkeep
    Cons:
    • No exact weight or size range is provided in the product details
    • May feel heavier than ultralight options, according to the supplied information
    • Less detailed fit information makes sizing harder to evaluate than for the OUMURS listing with a stated size range

    Best for: Mountain bikers who want a removable chin guard, use goggles, and need one helmet for both descents and less technical riding.

    Not ideal for: Buyers who need a confirmed weight, detailed size range, or more clearly documented fit information before choosing a helmet.

    • Model number:ZL-B068
    • Shell:Monocoque high-strength shell
    • Impact foam:EPS foam
    • Certifications:CPSC, ASTM F1447, ASTM F1952, CE EN1078
    • Chin guard:Removable
    • Ventilation:Multi-channel vents
    • Fit and eyewear:Adjustable fit; goggle compatible
    • Warranty:1 year
    Our verdict
    “Pick this OUMURS if goggle compatibility and a removable chin guard matter more than having a published weight and size range.”
  3. OUMURS Adult Full Face Mountain Bike Helmet with Goggles

    OUMURS Adult Full Face Mountain Bike Helmet with Goggles

    Best for Buyers Who Need a Stated Size Range

    View Latest Price

    This OUMURS listing makes the sizing information more concrete than the other OUMURS version: it specifies a 55–58 cm fit range and says goggles are included. That helps buyers who fall within that measurement and want a ready-to-ride convertible setup, with a removable chin guard for switching between fuller coverage and a more open configuration. Its certification list includes ASTM F1952 alongside CPSC, ASTM F1447, and CE EN1078. Like the other OUMURS, it uses a monocoque shell, EPS foam, and multi-channel vents; unlike the Bell Super DH MIPS, no MIPS or spherical impact technology is listed. The narrow stated range is a meaningful limitation, and the supplied information gives no exact weight. This makes it a more targeted fit choice than a broadly sized pick.

    Pros:
    • Published 55–58 cm size range helps buyers check basic fit compatibility
    • Removable chin guard supports full-face and more open riding modes
    • Goggles are listed as included components
    • Multi-channel ventilation and adjustable fit are specified
    Cons:
    • Stated size range is limited and may exclude many riders
    • No exact helmet weight is provided
    • MIPS or Spherical Technology is not listed, unlike on the Bell Super DH MIPS

    Best for: Riders with a 55–58 cm head measurement who want a convertible helmet with goggles included.

    Not ideal for: Riders outside the stated 55–58 cm range or those seeking listed MIPS or Spherical Technology.

    • Shell:Monocoque high-strength shell
    • Impact foam:EPS foam
    • Certifications:CPSC, ASTM F1447, ASTM F1952, CE EN1078
    • Size range:55–58 cm / 21.65–22.8 in
    • Chin guard:Removable
    • Ventilation:Multi-channel vents
    • Fit and eyewear:Adjustable fit; goggles compatible
    • Included components:Goggles, helmet
    Our verdict
    “Choose this OUMURS version if your head measures 55–58 cm and included goggles matter more than a broad size range.”
  4. Leatt MTB Enduro 4.0 Helmet Full Face with Removable Chin Bar

    Leatt MTB Enduro 4.0 Helmet Full Face with Removable Chin Bar

    Best for E-Bike and Enduro Versatility

    View Latest Price

    The Leatt MTB Enduro 4.0 stands out for combining a removable chin bar with a certification list that includes NTA 8776 S-EPAC for e-bike use and ASTM F1952 for downhill riding. That pairing makes it a more specialized option than either OUMURS convertible: it speaks directly to riders splitting time between enduro trails, descents, and e-bike rides. An adjustable visor and integrated sunglasses dock add useful ride-day details, while the listed three-year helmet replacement program provides a defined support feature. The Bell Super DH MIPS has named MIPS and Spherical Technology; Leatt’s supplied details instead emphasize its certifications and impact absorption technology without naming that system. The provided size is S (51–55 cm), so fit availability is the biggest constraint, and the stated dimensions are bulky to store or transport.

    Pros:
    • Removable chin bar adapts the helmet to different riding situations
    • Listed ASTM F1952-10 and NTA 8776 S-EPAC certifications
    • Integrated sunglasses dock and adjustable visor add practical convenience
    • Three-year helmet replacement program is specified
    Cons:
    • The supplied size is S only, listed for 51–55 cm
    • MIPS or Spherical Technology is not specified, unlike on the Bell Super DH MIPS
    • Listed dimensions of 15 x 11 x 13 inches may make storage less convenient

    Best for: Enduro and e-bike riders who want a removable chin bar and a helmet listing both downhill and S-EPAC certifications.

    Not ideal for: Riders outside the listed S, 51–55 cm size or buyers who prioritize named MIPS technology and a wider stated size range.

    • Model:Enduro 4.0
    • Size:S (51–55 cm)
    • Weight:12.96 oz
    • Certifications:ASTM F1952-10, NTA 8776 S-EPAC, CPSC 1203, EN1078, AS/NZS 2063:2008
    • Construction:EPS and foam
    • Chin bar:Detachable
    • Color:Loam Brown
    • Listed dimensions:15 x 11 x 13 in
    • Warranty program:3-year helmet replacement program
    Our verdict
    “The Enduro 4.0 is the strongest fit for e-bike and enduro riders who match the listed S size and value its certification mix.”
  5. Bell Super DH MIPS

    Bell Super DH MIPS

    Best Premium Impact-Technology Pick

    View Latest Price

    The Bell Super DH MIPS is the standout for buyers who place named impact technologies ahead of a simple convertible design: it lists both MIPS and Spherical Technology, plus full DH certification. Its removable, tool-free chin bar makes changing configurations simpler than a fixed full-face helmet such as the Fly Racing Rayce, while 19 vents, two brow ports, and four chin-bar vents give riders a clear ventilation layout. The size range of 52–62 cm across three sizes is also broader than the 55–58 cm range supplied for one OUMURS listing. Those details come with tradeoffs: the product information gives no measured weight, and the full-face construction may feel heavy to some riders. Buyers should also treat the chin bar as part of the helmet’s design, not as a guarantee against injury in every impact.

    Pros:
    • Lists both MIPS and Spherical Technology
    • Removable chin bar is tool-free
    • Full DH certification is specified
    • Three listed sizes cover head measurements from 52–62 cm
    Cons:
    • No measured weight is provided, and the full-face design may feel heavy
    • The chin bar cannot guarantee protection from serious injury in every impact
    • Vent counts are given, but detailed fit-system specifications are not included

    Best for: Downhill riders seeking a convertible helmet with listed MIPS and Spherical Technology, multiple sizes, and a tool-free chin bar.

    Not ideal for: Weight-focused riders or buyers who want a published weight and more detailed fit-system specifications before deciding.

    • Shell material:Polycarbonate
    • Impact technologies:MIPS, Spherical Technology
    • Sizes:Small (52–56 cm), Medium (55–59 cm), Large (58–62 cm)
    • Vents:19
    • Brow ports:2
    • Chin-bar vents:4
    • Certification:Full DH certification
    • Chin bar:Removable, tool-free
    Our verdict
    “Choose the Bell if named impact technologies and a broad listed size range outweigh your concern about weight and fit details.”
  6. ILM Mountain Bike MTB Full Face Helmet Adults Adjustable Size Dial BMX HT58

    ILM Mountain Bike MTB Full Face Helmet Adults Adjustable Size Dial BMX HT58

    Best for Washable, Adjustable Fit

    View Latest Price

    The ILM HT58 suits off-road riders who want full-face coverage with a fit they can adjust, plus a liner that can be removed for washing. Its polycarbonate shell and EPP impact-absorbing material are paired with an adjustable visor and goggles, making it a more trail-oriented package than a basic BMX helmet. Compared with the OutdoorMaster Rhino, the ILM lists ASTM F1447 and CPSC standards, while the Rhino spells out extras such as a goggle strap channel and 27 vents. The tradeoff is weight: at 1.6 pounds, the ILM may feel less suitable for riders prioritizing a lightweight setup. Its stated medium size and limited color choice also narrow the fit and style options. I’d choose it for adjustable everyday off-road use, not casual rides or weight-conscious racing.

    Pros:
    • Full-face coverage with polycarbonate and EPP materials
    • Adjustable fit system supports a more secure, personalized fit
    • Ventilation helps manage heat during off-road rides
    • Removable, washable liner simplifies upkeep
    Cons:
    • Listed weight of 1.6 pounds may feel heavy on longer rides
    • Only medium size and matte black color are specified
    • Designed primarily for off-road cycling rather than casual use

    Best for: Off-road riders seeking a medium-size full-face helmet with an adjustable fit, goggles, and a washable liner.

    Not ideal for: Riders who prioritize a lightweight helmet, need another size, or want a versatile option for casual cycling.

    • Model:HT58
    • Helmet type:Full face
    • Material:Polycarbonate (PC), Expanded Polypropylene (EPP)
    • Weight:1.6 pounds
    • Size:Medium
    • Color:Matte Black
    • Standards:ASTM F1447, CPSC
    • Intended use:Off-road cycling
    Our verdict
    “Choose the ILM HT58 if you want an adjustable, washable full-face helmet for off-road riding and can accept its stated weight and medium-only sizing.”
  7. OutdoorMaster Full Face Mountain Bike Helmet, Lightweight for BMX/DH

    OutdoorMaster Full Face Mountain Bike Helmet, Lightweight for BMX/DH

    Best for Ventilation and Goggle Setup

    View Latest Price

    The OutdoorMaster Rhino is a practical pick for downhill, BMX, and mountain-bike riders who value airflow and a ready-made goggle setup. Its 27 vents, pivoting visor, and goggle strap channel give riders useful adjustments on varied terrain, while the removable liner can be washed after sweaty sessions. Compared with the ILM HT58, the Rhino provides more ventilation details and a specified large fit range of 57–62 cm; the ILM, in turn, lists ASTM F1447 and CPSC standards, which are not included in the Rhino’s supplied specs. The Rhino weighs 0.8 kg, so riders should not assume it will feel especially light. It also comes in a listed pearl white color and one stated size range, limiting choice. I’d favor it for airflow and goggles, rather than for buyers seeking documented standards or broader sizing.

    Pros:
    • 27 vents support airflow during demanding rides
    • Goggle strap channel and pivoting visor add practical setup options
    • Removable, washable liner makes post-ride care easier
    • Impact system and shock pads are included in the product description
    Cons:
    • At 0.8 kg, it may feel heavy to riders seeking a lightweight setup
    • Only a large size range of 57–62 cm is specified
    • The supplied specifications do not list a safety certification

    Best for: Downhill, BMX, and mountain-bike riders with 57–62 cm heads who want abundant vents and a helmet designed to work with goggles.

    Not ideal for: Riders who need a smaller or larger stated size, want more color choices, or require safety standards listed in the supplied specifications.

    • Model name:Rhino
    • Model number:803922
    • Material:PC + EPP
    • Weight:0.8 kg
    • Size:Large
    • Head circumference:57–62 cm
    • Ventilation:27 vents
    • Included features:Removable liner, 2 D-rings, goggle strap channel, pivoting visor
    • Color:Pearl White
    Our verdict
    “Pick the OutdoorMaster Rhino if you ride downhill, BMX, or trails and value ventilation and goggle compatibility over a lighter feel or listed certification details.”
best convertible full-face bike helmets
What makes a great convertible full-face bike helmet
1
Decide Whether You Need a Removable Chin Bar
A convertible helmet makes the most sense when your rides move between climbs, trail sections and descents where you want differen
2
Match Certification to Your Riding
Certification labels describe testing against particular standards; they are not a universal promise that a helmet fits every ridi
3
Treat Fit as a Non-Negotiable
Measure your head using the maker’s instructions, then compare the result with that model’s own size chart.
4
Balance Ventilation Against Coverage
More coverage can feel hotter during long climbs, while a more ventilated shell may suit slower, technical riding or warm conditio
How to choose your convertible full-face bike helmet
1
How we picked
I ranked these helmets by how well their stated features answer the needs behind this category: reliable fit, appropriat
2
Decide Whether You Need a Removable Chin Bar
A convertible helmet makes the most sense when your rides move between climbs, trail sections and descents where you wan
3
Match Certification to Your Riding
Certification labels describe testing against particular standards; they are not a universal promise that a helmet fits
4
Treat Fit as a Non-Negotiable
Measure your head using the maker’s instructions, then compare the result with that model’s own size chart.
5
Balance Ventilation Against Coverage
More coverage can feel hotter during long climbs, while a more ventilated shell may suit slower, technical riding or war
Vetted convertible full-face bike helmets ·
The best convertible full-face bike helmets, compared
★ Winner Fly Racing Rayce Full-Face Mou
Best for Dedicated Downhill Riding
7compared
3certifications

How We Picked

I ranked these helmets by how well their stated features answer the needs behind this category: reliable fit, appropriate certification for the intended riding, useful full-face coverage, ventilation and practical day-to-day handling. Convertible designs received an advantage for riders who want open-face and full-face configurations, but only when the removable chin bar is clearly part of the model. I also weighed the quality of the available product information; a specific certification claim is easier to compare than broad protection language.

The order reflects differences in intended use, not a claim that every helmet is interchangeable or suitable for every discipline. The Leatt and Bell lead as the lineup’s convertible choices, while the Fly Racing Rayce stands out among fixed full-face options for its listed downhill certification. The OUMURS, ILM and OutdoorMaster listings offer alternatives, but buyers should confirm exact fit, certification and included components rather than infer performance from general listing descriptions.

Feature comparison
convertible full-face bike helmetCertifications
Fly Racing Rayce Full-Face MouASTM F1952-15, CPSC 1203, CE EN1078
OUMURS Adult Full Face MountaiCPSC, ASTM F1447, ASTM F1952, CE EN1078
OUMURS Adult Full Face MountaiCPSC, ASTM F1447, ASTM F1952, CE EN1078
Leatt MTB Enduro 4.0 Helmet FuASTM F1952-10, NTA 8776 S-EPAC, CPSC 1203, EN1078, AS/NZS 2063:2008
Bell Super DH MIPS—
ILM Mountain Bike MTB Full Fac—
OutdoorMaster Full Face Mounta—
Everyday → specialist
Everyday & valuePremium & specialist
Which convertible full-face bike helmet fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Best Convertible Full-face Bike Helmets

Before choosing, separate the need for a convertible helmet from the broader desire for full-face coverage. The difference affects how you judge certification, fit, setup and value. These checks help prevent a common mistake: buying based on a feature or accessory before confirming that the helmet matches your riding.

Decide Whether You Need a Removable Chin Bar

A convertible helmet makes the most sense when your rides move between climbs, trail sections and descents where you want different coverage. A fixed full-face design can be simpler if you ride downhill or bike parks in full-face mode every time. Check how the chin bar attaches and whether the maker describes the intended use in both configurations. Do not assume that removing the bar leaves the helmet equivalent to a dedicated open-face model. If you will rarely change configurations, the mechanism may add complexity without much benefit. If versatility is the point, confirm that the exact model—not just a related version—has a removable bar.

Match Certification to Your Riding

Certification labels describe testing against particular standards; they are not a universal promise that a helmet fits every riding discipline. Downhill riders should look for a clearly stated downhill standard on the exact helmet they plan to buy. A general cycling certification may be relevant for trail riding but should not be treated as proof of downhill certification. Check the label inside the helmet and the manufacturer documentation, especially when a retailer listing uses broad safety language. Certifications can vary between model generations and sizes. If a listing leaves the standard unclear, resolve that question before comparing accessories or color options.

Treat Fit as a Non-Negotiable

Measure your head using the maker’s instructions, then compare the result with that model’s own size chart. A dial can help fine-tune retention, but it cannot make the wrong shell size fit correctly. With the helmet fastened, it should sit level and stay stable when you move your head; pressure points or significant movement are reasons to try another size or shape. Do not size up just to make room for a thick liner or cap unless the manufacturer allows it. Try the helmet with the eyewear you expect to ride in, since goggle fit and strap placement can change comfort. When buying online, check the return policy before removing tags or altering the fit system.

Balance Ventilation Against Coverage

More coverage can feel hotter during long climbs, while a more ventilated shell may suit slower, technical riding or warm conditions better. Vent count alone is a poor guide: channel placement, internal padding and how fast you ride all affect airflow. Riders who climb in a full-face helmet should pay close attention to ventilation and liner comfort, not just downhill protection claims. Removable padding can help with cleaning, but confirm how it attaches and whether replacement parts are available. A helmet that feels tolerable in a shop may feel different during a long effort. Prioritize a secure fit first, then compare ventilation among helmets that fit well.

Compare the Complete Setup, Not the Extras

Goggles, a visor, a size dial and spare pads may add convenience, but they do not establish that a helmet is safer or better suited to your riding. Check exactly what is included, since product listings can bundle different accessories or use similar names for different versions. Confirm that your goggles fit the eye opening and do not push the helmet out of position. Consider replacement liners and parts if you expect regular use, since worn padding can affect comfort and retention. Pay attention to weight only after fit and coverage: a lighter helmet that moves around is not a useful upgrade. Compare the full set of verified features rather than relying on promotional wording.

Frequently Asked Questions

Are all seven helmets in this roundup convertible?

No. The Leatt MTB Enduro 4.0 is explicitly listed with a removable chin bar, and the Bell Super DH MIPS is the other convertible model in the lineup. The Fly Racing Rayce, OUMURS, ILM and OutdoorMaster entries are presented as full-face helmets, with no removable chin bar specified in the supplied product details. If changing between open-face and full-face setups is a must, confirm the exact model and included components before ordering. Do not assume that a similar helmet from the same brand has the same configuration.

Can I use a convertible helmet for downhill riding?

That depends on the exact helmet, its certification and the configuration permitted by its manufacturer. Check the model’s documentation for the relevant downhill standard and whether it applies with the chin bar attached. A helmet that is convertible is not automatically certified for every downhill use, and a general cycling certification may not answer that question. The Fly Racing Rayce listing specifically names ASTM F1952, making its downhill credentials clearer from the provided details, though it is not a convertible pick. When the standard or allowed configuration is unclear, ask the manufacturer before riding demanding terrain.

Should I choose a removable chin bar or a fixed full-face helmet?

Choose a removable bar if you expect to switch between climbing or less exposed trail riding and descents where you want full-face coverage. A fixed full-face helmet may be a more straightforward choice if you use full coverage throughout the ride and do not need an open-face mode. Compare fit and certification in the configuration you will actually ride; versatility is not useful if the helmet feels unstable or is not suited to your intended discipline. Also consider how often you will handle the attachment mechanism and whether you can inspect and maintain it as directed. Your ride pattern, not the word convertible by itself, should settle the choice.

Are goggles included with both OUMURS listings?

The product names for both OUMURS entries say “with Goggles,” but the supplied details do not establish whether the listings are identical or whether each package includes the same goggles. Check the specific listing’s package contents, model identifier and seller information before buying. Also verify that the goggles fit your face and helmet without shifting the helmet or leaving uncomfortable pressure points. If goggles are not included, make sure your existing pair works with the helmet’s opening and strap placement. Treat the duplicated listing names as a reason to verify details, not as evidence that one entry is a distinct model.

What should I do if I fall or the helmet takes a hard impact?

Follow the manufacturer’s impact and replacement guidance for the exact helmet; visible damage is not the only reason a helmet may need replacing. Some impact damage can be difficult to see, so do not rely on appearance alone after a hard crash. Check the shell, liner, chin bar attachment points and retention system for damage, but treat that inspection as a supplement to the maker’s instructions. If the helmet has been involved in a significant impact or you are unsure of its condition, contact the manufacturer about replacement. Keep the model and purchase details so you can identify the right guidance and compatible parts.

Conclusion

For most riders who specifically want a convertible design, I would start with the Leatt MTB Enduro 4.0 as the best overall fit for a trail-to-descent use case. The Bell Super DH MIPS is my premium-leaning alternative for buyers who place particular weight on its MIPS designation, while the Fly Racing Rayce is the clearest choice for riders seeking a fixed full-face helmet with ASTM F1952 listed. For best value or a beginner-friendly pick, the supplied details do not establish enough about fit, certification or package differences to name a confident winner among the OUMURS, ILM and OutdoorMaster options; compare those details and choose the one that fits securely and matches your riding. For a specific need such as included goggles or an adjustable size dial, the OUMURS and ILM listings may merit a closer look, but verify the exact contents and sizing first. If a removable chin bar is essential, narrow the shortlist to the Leatt and Bell rather than treating all seven as convertible.

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