The best convertible MTB helmets 2026 combine the ventilation and freedom of an open-face trail helmet with the option of adding a chin bar before steeper, faster or more technical descents. For the right rider, that flexibility can make one helmet useful across trail-centre loops, natural enduro rides, eMTB laps and occasional bike-park days.
A removable chin bar is not automatically the best option for everyone. Riders who always want facial coverage will normally be better served by a dedicated full-face helmet. Those who rarely ride steep or technical terrain may find a conventional open-face helmet cooler, lighter and easier to live with.
Convertible helmets make the most sense when the nature of a ride changes as it progresses. You might climb on a bridleway in open-face mode, add the chin bar before a rough woodland descent, remove it for another long transfer and then refit it for the final trail. That is a genuine use case rather than a feature included for its own sake.
The compromise is that convertible MTB helmets are rarely as light and simple as dedicated open-face helmets. Some also feel less substantial than fixed full-face designs, while gravity-focused models can remain relatively heavy even after the chin bar is removed. Fit, certification and the conversion system therefore matter more than the promise of “two helmets in one”.
This guide focuses on five current helmets with clear reasons to buy. All are available through UK retailers, but they approach the category differently. The Leatt Enduro 2.0 is the affordable starting point, the Enduro 3.0 is the strongest all-rounder, the Bell Super Air R is the light trail-first option, the MET Parachute MCR has one of the best conversion systems, and the Bell Super DH is the gravity-focused choice.
Riders still deciding which style of helmet they need should start with our best MTB helmets 2026 guide. If you expect to keep the chin bar attached throughout every ride, compare the best full-face MTB helmets 2026 instead.
The best convertible MTB helmets 2026 shortlisted
Leatt Enduro 2.0 — £136.99 (RRP £169)
Bell Super Air R Spherical — From £164.99 (RRP £299.99)
MET Parachute MCR — £179 (RRP £300)
Leatt Enduro 3.0 — £198.99 (RRP £249.99)
Bell Super DH Spherical — £199.99 (RRP £314.99)
What is a convertible MTB helmet?
A convertible MTB helmet is an open-face mountain bike helmet with a removable chin bar. With the chin bar detached, it is intended to provide the airflow and freedom needed for climbs, transitions and less demanding trails. Once the chin bar is fitted, it adds coverage around the jaw and lower face.
The conversion system varies between manufacturers. Some chin bars use simple push buttons, while others rely on rotating locks, magnetic guides or multi-stage clips. The best system is not necessarily the cleverest one. It is the system you can use correctly, confidently and without needing to place the helmet on the ground every time the terrain changes.
Convertible helmets also vary considerably in intent. The Bell Super Air R is essentially a trail helmet with additional chin-bar coverage. The Bell Super DH and MET Parachute MCR carry downhill-focused certification and feel more substantial when used as full-face helmets. The Leatt Enduro 3.0 adds a third configuration with removable ear coverage between its half-shell and full-face modes.
The important point is that the chin bar does not turn every trail helmet into a downhill race helmet. Certification, construction and intended use still need to be checked for each model.
The best convertible MTB helmets 2026
Leatt Enduro 2.0
£136.99 (RRP £169)
The Leatt Enduro 2.0 is the best-value way into the removable-chin-bar category. It provides the core feature riders are looking for without pushing the price close to premium full-face territory.
Its lightweight polymer shell uses the same general push-button chin-bar concept as the more expensive Enduro 3.0. The helmet also includes Leatt’s 360° Turbine Technology, a Fidlock magnetic buckle, an adjustable breakaway visor and 20 vents intended to work at relatively low speeds.
The main distinction is how the helmet should be used. The Enduro 2.0 meets normal cycling helmet standards, while Leatt states that its chin bar passes ASTM impact testing. That is not the same proposition as the fully downhill-certified Enduro 3.0, MET Parachute MCR or Bell Super DH.
It therefore makes most sense for trail riders who want extra facial coverage for selected descents rather than riders buying specifically for regular downhill or bike-park use. It suits mixed trail-centre routes, natural woodland riding and eMTB loops where the chin bar is an occasional addition rather than the helmet’s default configuration.
At its current price, the Enduro 2.0 is a convincing first convertible helmet. Riders already tackling aggressive enduro tracks or repeated bike-park laps should spend more for one of the fully downhill-certified options.
Pros
Strong value entry into the convertible category
Trail-friendly feel in open-face mode
Fidlock buckle and simple removable chin bar make everyday use easier
Cons
Less confidence-inspiring than the more gravity-focused helmets here
Specifications
Type: Convertible MTB helmet
Rotational protection: 360° Turbine Technology
Fit system: Adjustable fit system
Ventilation: 20 vents
Visor: Adjustable visor with breakaway function
Goggle compatibility: Yes
Bell Super Air R Spherical
From £164.99 (RRP £299.99)
The Bell Super Air R Spherical is the trail-first helmet in this guide. It is aimed at riders who spend most of a ride climbing, linking trails and wearing the helmet in open-face mode, with the chin bar added for selected descents.
That distinction matters. The Super Air R weighs around 640g with the chin bar attached and has 18 helmet vents, eight chin-bar vents and four brow ports. It feels more like a well-ventilated trail helmet than a gravity lid that happens to convert.
Bell’s tool-free chin bar uses a two-step attachment system. It is quick enough for trailside use and does not require the helmet to remain permanently configured before the ride begins. Spherical Technology powered by Mips uses separate inner and outer layers designed to move relative to one another during certain impacts.
The Super Air R does not carry the ASTM downhill certification of the Bell Super DH. That is the central buying distinction between the two. The Super Air R is the better option for long trail rides, warmer conditions and riders who only need the chin bar occasionally. The Super DH is the better choice when harder descending is the main reason for buying the helmet.
For British trail centres and long eMTB loops, the Super Air R’s low weight and ventilation are highly attractive. It should not be chosen as a lightweight substitute for a downhill helmet if regular bike-park riding is the actual intended use.
Pros
Trail-first feel makes it easier to live with than bulkier convertibles
Removable chin bar concept suits real mixed-terrain UK riding
One of the most convincing all-rounders in the category
Cons
Riders focused mainly on steep descending may want something burlier
Specifications
Type: Convertible MTB helmet
Rotational protection: Spherical Technology powered by Mips
Fit system: Float Fit system
Ventilation: Overbrow and all-mountain venting
Visor: Adjustable peak
Goggle compatibility: Yes
MET Parachute MCR
£179 (RRP £300)
The MET Parachute MCR Mips has one of the most convincing chin-bar systems in the category. MCR stands for Magnetic Chinbar Release, with magnetic guides helping locate the chin bar before its locking mechanisms are secured.
That ease of conversion is not a minor detail. A chin bar only adds practical value if the rider is willing to carry, fit and remove it during a normal ride. A system that feels awkward will eventually be left attached for the whole day or abandoned in the car.
The Parachute MCR is also more substantial than most trail-first designs. MET lists ASTM 1952-15 and 2032-15 certification for the shell and chin bar, along with Mips-C2, a BOA FS1 fit system, Fidlock buckle and 21 vents.
At approximately 840g in full-face mode and 455g as an open-face helmet, it sits between the lightweight Bell Super Air R and the gravity-focused Bell Super DH. That makes it highly versatile but not especially light in either configuration.
The open-face shell also feels more substantial than a normal trail helmet, which will reassure some riders and feel excessive to others. Its strongest use case is the rider who truly changes configuration during the day and wants the conversion process to be as straightforward as possible.
At full RRP it is expensive, but current discounts bring it much closer to the Leatt Enduro 3.0.
Pros
One of the strongest genuinely usable convertible concepts
Magnetic Chinbar Release system is a real selling point
Premium feel in both fit and execution
Cons
At full price it is still expensive compared with simpler removable-chin-bar helmets
Specifications
Type: Convertible MTB helmet
Rotational protection: MIPS
Fit system: BOA-FS1 Fit System
Ventilation: 21 vents with internal air channelling
Visor: Adjustable visor
Goggle compatibility: Yes
Leatt Enduro 3.0
£198.99 (RRP £249.99)
The Leatt Enduro 3.0 is the best convertible MTB helmet for riders who genuinely want to use more than one configuration. It can be worn as a conventional open-face helmet, with additional ear coverage, or as a full-face helmet with the chin bar attached.
That three-mode layout gives it a useful advantage over simpler two-piece designs. Open-face mode works for ordinary trail riding and longer climbs. The ear covers add more side coverage without enclosing the face, while the chin bar creates a downhill-certified full-face setup for rougher descents.
The push-button chin-bar attachment is simple enough to use during a ride, and the helmet includes a Fidlock magnetic buckle, adjustable visor and sunglasses storage. Leatt’s 360° Turbine system is intended to manage rotational and lower-speed impact energy.
At a stated 690g with the chin bar and 360g without it, the Enduro 3.0 remains manageable for pedalled riding. It is not as airy or minimal as the Bell Super Air R in open-face mode, but it feels more serious when converted for demanding terrain.
This is the strongest choice for UK riders whose normal rides move between long climbs, trail-centre laps and enduro-style descents. It provides a better balance than buying the lightest possible convertible and then wishing it felt more substantial when the terrain becomes difficult. The Enduro 3.0 is certified to EN1078 and ASTM F1952–10 standards.
Pros
Best-balanced Leatt option for most riders
Strong fit for trail-centre and all-mountain riding
Good middle ground between value and gravity focus
Cons
Less distinct if you already know you want either the cheapest or the most aggressive Leatt
Specifications
Type: Convertible MTB helmet
Rotational protection: 360° Turbine Technology
Fit system: Adjustable fit system
Ventilation: 20 vents
Visor: Adjustable visor with breakaway function
Goggle compatibility: Yes
Bell Super DH Spherical
£199.99 (RRP £314.99)
The Bell Super DH Spherical is the best option here for riders who want a genuine gravity-focused helmet but still value the option of removing the chin bar on long climbs or easier sections.
It carries ASTM F1952 downhill and ASTM F2032 BMX certification, making its intended use much clearer than the trail-first Super Air R. The 360-degree wraparound chin bar uses a tool-free three-step connection, while the Spherical Technology system powered by Mips is designed to manage rotational impact forces through its layered construction.
At around 860g with the chin bar and 465g without it, the Super DH is heavier than the Super Air R but still reasonable for a downhill-certified convertible. Its Float Fit DH retention system, Fidlock buckle, large eye port and adjustable visor are all suited to goggles and more committed riding.
The Super DH makes particular sense for enduro riders, bike-park visitors and eMTB riders who use assistance to complete repeated technical descents. It provides more gravity reassurance than the lighter options without forcing the rider to wear a fixed full-face through every climb.
The compromise is that open-face mode remains relatively bulky. Riders who spend most of their time on ordinary trail loops will find the Bell Super Air R or Leatt Enduro 2.0 easier to live with. The Super DH is for riders who are buying a full-face first and a convertible second.
Pros
More gravity-focused than most convertibles
Full DH certification boosts confidence for harder riding
Strong option for bike park, enduro and rough eMTB use
Cons
Bulkier and heavier than trail-first removable-chin-bar helmets
Specifications
Type: Convertible MTB helmet
Rotational protection: Spherical Technology powered by Mips
Fit system: Spherical Technology powered by Mips
Ventilation: Overbrow Ventilation
Visor: Adjustable visor
Goggle compatibility: Yes
How to choose a removable-chin-bar MTB helmet
The best convertible helmet is not necessarily the one with the highest price or the longest specification list. It is the helmet that fits securely, matches the terrain you ride and has a chin-bar system you will actually use.
Start with fit
A helmet should sit level and low enough to protect the forehead without obstructing vision. Tightening the retention dial should secure the helmet evenly rather than creating one painful pressure point.
With the chin bar attached, the helmet should not rock forward or backward when you move your head. Cheek pads should provide light support without making it difficult to breathe or speak.
Helmet shape differs between brands. A model that fits one rider perfectly may create forehead pressure or excessive side space for another. Whenever possible, try the helmet in both open-face and full-face configurations before buying.
Check the certification
EN1078 is the normal European cycling helmet standard. It applies to a broad range of bicycle helmets, including many open-face designs.
ASTM F1952 is associated with downhill mountain bike helmet testing and includes more demanding impact and coverage requirements. ASTM F2032 covers BMX use. These standards are particularly relevant when the helmet is being bought for bike parks, downhill tracks or more aggressive enduro riding.
Do not assume that every removable chin bar has the same certification as the main helmet. The Leatt Enduro 2.0, for example, is a trail-focused helmet whose chin bar passes ASTM impact testing, while the Leatt Enduro 3.0, MET Parachute MCR and Bell Super DH carry broader downhill-focused certification.
Consider where the chin bar will go
A removable chin bar needs to be carried when it is not attached. Some fit easily around a backpack or inside a larger riding pack, while others are awkward and bulky.
Think about this before buying. A quick conversion mechanism is less useful if the chin bar cannot be carried comfortably during the climb.
Do not attach it loosely to the handlebar or allow it to swing from the outside of a pack where it can interfere with riding or be damaged.
Decide whether you are trail-first or gravity-first
Trail-first riders should prioritise low weight, ventilation and open-face comfort. The Bell Super Air R and Leatt Enduro 2.0 are the clearest options here.
Gravity-first riders should prioritise certification, stability and how substantial the helmet feels with the chin bar attached. The Bell Super DH and MET Parachute MCR are stronger choices for that use.
The Leatt Enduro 3.0 sits between the two, which is why it is the strongest all-round recommendation.
Convertible MTB helmet or dedicated full-face?
A convertible helmet is useful when the same ride includes both long climbs and difficult descents. It gives riders a way to increase facial coverage without committing to a fixed full-face for the entire day.
A dedicated full-face remains the better choice when the chin bar would be attached almost all the time. Fixed full-face helmets generally have fewer moving parts and often feel more cohesive and reassuring for regular gravity riding.
Buying separate open-face and full-face helmets also gives you two products designed specifically for their jobs. The disadvantage is cost, storage and the need to decide which helmet to take before the ride begins.
A convertible design is therefore a convenience-led compromise, not an automatic upgrade. Riders who mainly tackle bike parks or downhill tracks should read our best full-face MTB helmets 2026 guide. Those who want more coverage without any chin bar should compare the best enduro MTB helmets 2026.
Are convertible MTB helmets suitable for eMTB riding?
There is no requirement to buy a helmet labelled specifically for eMTB use. What matters is how the bike is ridden.
An eMTB can make repeated climbs easier, allowing riders to complete more descents in one session. That can make a convertible helmet useful on rides where a standard open-face feels appropriate for transfers but extra coverage is welcome on steeper runs.
The extra mass of an eMTB can also make low-speed crashes awkward, although helmet choice should still be based primarily on terrain, speed and riding style rather than the presence of a motor.
A convertible helmet makes sense for eMTB trail and enduro rides where conditions change throughout the route. A dedicated full-face may be better for repeated bike-park laps, while a normal open-face helmet remains appropriate for bridleways, forest roads and lower-risk trails.
Helmet choice should also be considered alongside the rest of your riding kit. Our best eMTB protection 2026 guide covers knee, elbow, chest and back protection for trail and gravity riding.
Frequently Asked Questions
What is the best convertible MTB helmet 2026 for most riders?
The Leatt Enduro 3.0 is the best all-round option because it combines three configurations, downhill certification, manageable weight and a simple chin-bar system. The Bell Super Air R is better for trail-first riders, while the Bell Super DH suits more aggressive gravity use.
What is the best-value removable-chin-bar MTB helmet?
The Leatt Enduro 2.0 is the best-value choice. It offers a removable push-button chin bar, Fidlock buckle and rotational-impact system at a substantially lower price than most premium convertibles.
Are convertible MTB helmets safe?
Convertible MTB helmets can provide appropriate protection when they fit correctly, are used according to the manufacturer’s instructions and match the intended riding. Certifications vary, so check whether a helmet is designed for trail use or carries downhill-focused standards such as ASTM F1952.
Which convertible helmet is best for bike-park riding?
The Bell Super DH Spherical is the strongest bike-park choice in this guide because it carries ASTM downhill certification and has a more substantial full-face construction. The MET Parachute MCR and Leatt Enduro 3.0 are also downhill-certified options.
Which convertible helmet is best for long climbs?
The Bell Super Air R is the strongest choice for long, pedal-heavy rides because it is relatively light, highly ventilated and designed around trail use. The Leatt Enduro 2.0 is the more affordable alternative.
Can the chin bar be fitted while wearing the helmet?
Some systems can be fitted while the helmet remains on the head, but ease varies. It is normally safer to stop fully and follow the manufacturer’s instructions. Always check that every connection point is correctly locked before riding.
Do I need to carry the chin bar on every ride?
No. If you know the route does not require it, the helmet can be used in open-face mode. However, leaving the chin bar at home removes the main advantage of buying a convertible helmet.
Is a convertible helmet better than a full-face helmet?
Neither type is universally better. A convertible helmet offers greater flexibility and airflow on climbs. A dedicated full-face is usually the better choice when facial coverage is needed throughout the entire ride.
Should eMTB riders wear a full-face helmet?
It depends on the terrain. A full-face or convertible helmet makes sense for steep descents, enduro trails, bike parks and repeated technical laps. A normal trail helmet may still be appropriate for bridleways, forest roads and less demanding off-road routes.
When should an MTB helmet be replaced?
Replace a helmet after a significant impact, even when damage is not obvious. It should also be replaced if the shell, liner, straps, retention system or chin-bar attachment points become damaged. Follow the manufacturer’s inspection and replacement guidance.