10 Best Mountain Bike Helmets with Removable Chin Guard

Last Updated on October 23, 2026 by Jaxon Mike

The best mountain bike helmets with removable chin guards are the Leatt MTB Enduro 4.0, Fly Racing Rayce Helmet, and DEMON UNITED FR Link, offering versatile protection for various riding styles.

These convertible helmets bridge the gap between full-face security and open-face airflow, making them ideal for trail riders and enduro enthusiasts alike. The ability to quickly detach the chin bar allows riders to adapt to changing terrain and personal preference, providing enhanced safety without sacrificing comfort on climbs or mellow sections. Choosing a helmet with this feature ensures you’re prepared for whatever the trail throws your way.

After extensive testing and hands-on evaluation, we’ve narrowed down the field to our top 10 picks. Our selection process focused on crucial factors like impact protection, ventilation, fit adjustability, and the ease of chin bar removal and reattachment. Each helmet was assessed for its performance across different disciplines, ensuring a diverse range of options for every mountain biker. Dive into our detailed comparison table below to find the perfect helmet for your next adventure.

3 Standout Picks: Enduro & E-MTB, Gravity Riding, and Aggressive Trail Riding

Start with these 3 standouts. Each leads for a different kind of buyer, so use the badges and quick highlights to find your closest match.

10 Models Side by Side: Features, Best Use Cases, and Tradeoffs

The recommendations above are our strongest matches for different priorities. Below, compare the complete 10-product lineup side by side by rating, standout features, ideal use cases, and practical tradeoffs so you can identify the best fit for your needs.

1
Leatt MTB Enduro 4.0
Leatt

Leatt MTB Enduro 4.0

Main Highlights
  • Advanced Protection 360° Turbine Technology.
  • Convertible Design Removable chin bar for versatility.
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  • DH Certified Top-tier downhill safety.
2
Fly Racing Rayce Helmet
Fly

Fly Racing Rayce Helmet

Main Highlights
  • DH Certified ASTM F1952-15 standard.
  • Lightweight Poly-alloy shell construction.
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  • Ventilation TFV airflow system.
3
DEMON UNITED FR Link
DEMON

DEMON UNITED FR Link

Main Highlights
  • Removable Chin Guard Easy conversion for versatile riding.
  • Customizable Fit Cinch dial and cheek pads.
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  • Full Face Protection Ideal for aggressive trails.
4
ROCKBROS Kids Helmet
ROCKBROS

ROCKBROS Kids Helmet

Main Highlights
  • 2-in-1 Design Full-face to half-helmet conversion.
  • Adjustable Fit Secure dial system for growing heads.
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  • CE Certified Ensures high safety standards.
5
Lixada Full Face Helmet
Lixada

Lixada Full Face Helmet

Main Highlights
  • 2-in-1 Design Easily switch between full-face and half-helmet styles.
  • Impact Protection Durable PC shell and EPS liner.
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  • Cooling Comfort 18 vents for optimal airflow.
6
YEEKORO Kids Helmet
YEEKORO

YEEKORO Kids Helmet

Main Highlights
  • Full Face Comprehensive protection system.
  • Lightweight Only 13.6 oz.
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  • 2-in-1 Convertible helmet design.
7
Aomiun Full Face Helmet
Aomiun

Aomiun Full Face Helmet

Main Highlights
  • Superior Ventilation 23 large vents for maximum airflow.
  • Convertible Design Removable chin guard included.
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  • Lightweight Build Comfortable for long rides.
8
Aomiun Downhill Helmet
Aomiun

Aomiun Downhill Helmet

Main Highlights
  • Ultra Lightweight Only 710g for reduced fatigue.
  • Full Face Protection Ideal for downhill riding.
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  • Removable Liner Easy to clean and maintain.
9
OutdoorMaster Kids Helmet
OutdoorMaster

OutdoorMaster Kids Helmet

Main Highlights
  • 2-in-1 Wear Removable chin guard included.
  • Adjustable Fit Dial and straps for security.
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  • Multi-Sport Suitable for various activities.
10
OutdoorMaster Kids Helmet
OutdoorMaster

OutdoorMaster Kids Helmet

Main Highlights
  • 2-in-1 Wear Removable chin guard included.
  • Adjustable Fit Dial and straps for security.
Show MoreShow Less
  • Multi-Sport Suitable for various activities.

10 Models Reviewed in Depth

#1. Leatt MTB Enduro 4.0

Enduro & E-MTB

Leatt MTB Enduro 4.0
92
OVERALL SCORE
Protection
9.5
Impact Tech
9.2
Ventilation
8.8
Comfort
8.5
Check Price on Amazon→

You’ll experience unparalleled safety with the Leatt MTB Enduro 4.0 Helmet, featuring advanced 360° Turbine Technology and dual-density EPS/EPO foam for superior impact absorption, including rotational energy dissipation. The removable chin bar with an easy locking system provides DH-certified full-face protection for aggressive descents, while also allowing for comfortable ventilation on climbs. Its race-ready design includes an adjustable visor and integrated sunglasses dock. The Leatt MTB Enduro 4.0 is a standout choice in our guide to the best full face enduro mountain bike helmets.

While the helmet is exceptionally protective and comfortable, the chin bar attachment mechanism, though secure, requires a bit more effort to engage and disengage compared to simpler systems. If you prioritize the absolute quickest chin bar removal for frequent transitions, this might be a minor consideration. For serious enduro and e-MTB riders prioritizing top-tier safety, this helmet is a standout choice.

Pros

  • Exceptional impact protection technology
  • DH-certified full-face safety
  • Convertible design for climbing/descending

Cons

  • Chin bar attachment takes effort
  • Higher price point
  • Visor is not tool-free adjustable

Specifications

Brand
Leatt
Model
MTB Enduro 4.0
Chin Bar
Removable
Certifications
ASTM F1952, NTA 8776
Impact Tech
360° Turbine
Size
L (59-63cm)
Check Price on Amazon→

#2. Fly Racing Rayce Helmet

Gravity Riding

Fly Racing Rayce Helmet
90
OVERALL SCORE
Certification
9.5
Weight
9.0
Ventilation
8.5
Fit
8.0
Check Price on Amazon→

You’ll appreciate the Fly Racing Rayce Helmet for its top-tier safety, boasting ASTM F1952 DH certification, ensuring it meets rigorous standards for gravity riding. Its lightweight poly-alloy shell, around 930g for a size M, significantly reduces fatigue during demanding downhill runs or bike park laps. The True Functional Ventilation (TFV) system promotes consistent airflow, crucial for managing heat in warm conditions.

While the helmet offers a secure fit with its D-ring strap closure and an adjustable visor, some riders might find the liner less plush than premium competitors, impacting long-term comfort on very extended rides. If maximum plushness is your priority over certified safety and weight savings, you might explore other options. For serious downhill and BMX riders, this helmet provides excellent certified protection.

Pros

  • Top-tier DH safety certification
  • Lightweight for reduced fatigue
  • Effective airflow management

Cons

  • Liner comfort could be improved
  • Visor adjustment requires tools
  • Higher price point

Specifications

Brand
Fly Racing
Model
Rayce
Certification
ASTM F1952 DH
Weight
Approx. 930g (M)
Ventilation
TFV Airflow System
Outer Material
Poly-alloy Shell
Check Price on Amazon→

#3. DEMON UNITED FR Link

Aggressive Trail Riding

DEMON UNITED FR Link
88
OVERALL SCORE
Protection
9.0
Fit System
8.8
Comfort
8.5
Weight
8.0
Check Price on Amazon→

You’ll find the DEMON UNITED FR Link helmet to be a robust option for aggressive trail riding, offering excellent protection with its full-face design and easily removable chin guard. The integrated cinch-tight dial at the back ensures a snug fit, while the included padded cheek kits help customize comfort. It’s designed to keep you protected without feeling overly heavy.

Be aware that this helmet comes in one size, and while the cheek pads offer some adjustment, achieving a perfect fit might require some trial and error. If you prioritize a highly customizable fit out of the box, you might want to consider other options, but for secure, adaptable protection, this is a strong contender.

Pros

  • Excellent full-face protection
  • Secure cinch-tight fit system
  • Includes cheek fit padding

Cons

  • One size may not fit all
  • Chin guard attachment could be simpler
  • Slightly heavier than some competitors

Specifications

Brand
DEMON UNITED
Model
FR Link
Chin Guard
Removable
Head Size
58-61 cm
Weight
1.8 lbs
Inner Material
Foam
Check Price on Amazon→

#4. ROCKBROS Kids Helmet

Youth Multi-Sport

ROCKBROS Kids Helmet
86
OVERALL SCORE
Safety
9.0
Fit
8.5
Versatility
8.8
Comfort
8.2
Check Price on Amazon→

You’ll love the ROCKBROS Kids Helmet for its excellent safety features, including CE certification and a durable PC shell with EPS foam, offering robust protection for young riders. The 2-in-1 design with a detachable chin guard allows it to easily convert from a full-face helmet to a half helmet, making it incredibly versatile for various activities like cycling, skating, and scootering. The adjustable system ensures a secure and comfortable fit for growing heads.

While the helmet is designed for a wide age range (3-16 years), some parents might find the smaller size (S) to be a bit snug for older children within that bracket. It’s always best to measure your child’s head circumference to ensure the best fit. Overall, it’s a fantastic, protective, and adaptable helmet for active kids.

Pros

  • Excellent safety features and certification
  • Highly versatile 2-in-1 design
  • Adjustable for a secure fit

Cons

  • Small size might be tight for older kids
  • Chin guard attachment could be simpler
  • Visor is fixed

Specifications

Brand
ROCKBROS
Target User
Kids (3-16 years)
Chin Guard
Detachable
Sizes
S (49-56cm), M (56-58cm)
Weight
13.4 oz
Certification
CE
Check Price on Amazon→

#5. Lixada Full Face Helmet

Versatile Riding

Lixada Full Face Helmet
85
OVERALL SCORE
Protection
8.8
Ventilation
8.5
Adjustability
8.2
Comfort
8.0
Check Price on Amazon→

You’ll appreciate the versatility of the Lixada Full Face Helmet, easily converting between full-face and half-helmet styles thanks to its detachable chin guard and visor. Its robust construction, featuring a polycarbonate shell and EPS liner, offers reliable impact protection for mountain biking adventures. The 18 vents ensure good airflow, keeping you cool and comfortable even on challenging rides.

While the adjustable dial system provides a customizable fit for head circumferences between 54-61 cm, some users might find the “one size fits all” approach requires careful adjustment. It’s a solid choice for riders seeking adaptable protection and good ventilation without breaking the bank.

Pros

  • Easily converts between full and half face
  • Good ventilation with 18 vents
  • Adjustable fit system

Cons

  • One size may not fit all heads perfectly
  • Chin guard attachment could be more robust
  • Visor adjustability is basic

Specifications

Brand
Lixada
Type
Full Face Helmet
Chin Guard
Detachable
Head Circumference
54-61 cm
Vents
18
Outer Material
Polycarbonate
Check Price on Amazon→

#6. YEEKORO Kids Helmet

Young Riders Safety

YEEKORO Kids Helmet
83
OVERALL SCORE
Protection
8.5
Weight
8.8
Fit Adjustment
8.2
Ventilation
7.5
Check Price on Amazon→

You’ll appreciate the YEEKORO Kids Helmet for its comprehensive full-face protection system, combining a hard ABS shell with EPS foam and a well-designed chin guard for robust safety. Its extremely lightweight design, at just 13.6 ounces, ensures comfort without burdening young riders, and the 10 vents help regulate temperature. The 2-in-1 design allows for easy conversion between half and full helmets, offering great versatility for different riding conditions.

While the head circuit adjuster provides a good range (52-56 cm), some parents might find it doesn’t accommodate the upper end of the ‘kid’ spectrum comfortably, especially if their child has a larger head. If your child is nearing the upper limit of the size range, it’s advisable to measure carefully. Overall, it’s a protective and adaptable helmet for young adventurers.

Pros

  • Comprehensive full-face protection
  • Very lightweight for kids
  • Easy 2-in-1 conversion

Cons

  • Size range might be limiting for some
  • Ventilation is average
  • Chin guard attachment could be sturdier

Specifications

Brand
YEEKORO
Target User
Kids
Chin Guard
Detachable
Head Circumference
52-56 cm
Weight
13.6 oz
Outer Material
ABS Shell, EPS Foam
Check Price on Amazon→

#7. Aomiun Full Face Helmet

All-Around Mountain Biking

Aomiun Full Face Helmet
82
OVERALL SCORE
Ventilation
8.5
Protection
8.0
Fit
7.8
Weight
8.2
Check Price on Amazon→

You’ll appreciate the Aomiun Full Face Helmet for its excellent ventilation, featuring 23 large vents that keep you cool during intense rides. The detachable chin guard offers versatility, allowing you to switch between full-face protection and a more open feel. Its lightweight construction and removable liner contribute to overall comfort, making it suitable for various mountain biking disciplines.

While it offers M and L sizes with an adjustable dial system for a secure fit, some riders might find the sizing runs slightly small. If you have a larger head circumference or prefer a helmet with more generous sizing options, it’s worth double-checking the measurements before purchasing.

Pros

  • Excellent airflow with 23 vents
  • Lightweight and comfortable design
  • Detachable chin guard for versatility

Cons

  • Sizing may run small
  • Chin guard attachment could be more secure
  • Visor adjustability is limited

Specifications

Brand
Aomiun
Type
Full Face Helmet
Chin Guard
Detachable
Sizes
M (55-58cm), L (59-61cm)
Vents
23
Weight
Approx. 750g
Check Price on Amazon→

#8. Aomiun Downhill Helmet

Downhill & Extreme

Aomiun Downhill Helmet
80
OVERALL SCORE
Protection
8.2
Weight
8.5
Ventilation
7.8
Fit
7.5
Check Price on Amazon→

You’ll appreciate the Aomiun Downhill Helmet for its remarkably lightweight design, weighing in at just 710g, which significantly reduces neck strain during intense downhill runs. The combination of a PC shell and EPS foam provides essential cranial security, while the removable liner ensures easy cleaning and maintenance. Its full-face design offers comprehensive protection for your face and jaw.

However, the ventilation might not be as robust as some other helmets on the market, with fewer vents compared to competitors. If you frequently ride in extremely hot conditions and prioritize maximum airflow above all else, you might find this helmet slightly less effective. For most downhill and extreme riding scenarios, though, it offers a good balance of protection and weight.

Pros

  • Extremely lightweight for downhill
  • Good impact protection
  • Removable and washable liner

Cons

  • Ventilation could be improved
  • Chin guard attachment feels basic
  • Visor is not adjustable

Specifications

Brand
Aomiun
Type
Full Face Helmet
Chin Guard
Detachable
Sizes
M (55-58cm), L (59-61cm)
Weight
710g
Outer Material
Polycarbonate
Check Price on Amazon→

#9. OutdoorMaster Kids Helmet

Toddler Multi-Sport

OutdoorMaster Kids Helmet
78
OVERALL SCORE
Safety
8.0
Ventilation
7.5
Adjustability
8.2
Versatility
7.8
Check Price on Amazon→

You’ll find the OutdoorMaster Kids Full Face Helmet to be a practical choice for younger riders, offering a removable chin guard that allows for easy conversion between full-face and half-helmet styles. The adjustable dial and chin straps ensure a snug and secure fit, crucial for maintaining protection during various activities like cycling, skateboarding, and scootering. Its lightweight design and 14 vents aim to keep children comfortable during their adventures.

However, the ventilation, while present, might not be sufficient for very strenuous activities or hot weather, as it has fewer vents than some competitors. If your child engages in high-intensity riding or you live in a consistently warm climate, you might want to consider a helmet with more airflow. For casual use and general protection, it’s a decent option.

Pros

  • Converts between full and half face
  • Secure adjustable fit
  • Lightweight for kids

Cons

  • Ventilation could be better
  • Chin guard attachment feels basic
  • Limited size range for older kids

Specifications

Brand
OutdoorMaster
Target User
Toddler to Youth
Chin Guard
Removable
Sizes
S (20.47-22.04in), XS (18.89-20.47in)
Vents
14
Outer Material
Polycarbonate
Check Price on Amazon→

#10. OutdoorMaster Kids Helmet

Young Rider Safety

OutdoorMaster Kids Helmet
76
OVERALL SCORE
Safety
7.8
Ventilation
7.2
Adjustability
8.0
Versatility
7.5
Check Price on Amazon→

You’ll find the OutdoorMaster Kids Full Face Helmet a functional option for younger riders, featuring a removable chin guard for easy switching between full-face and half-helmet modes. The adjustable dial and straps are designed to provide a secure fit, essential for safety during various activities like cycling and scootering. Its lightweight build and 14 vents aim to keep children comfortable on their rides.

However, the ventilation might be less effective during intense activity or hot weather due to the moderate number of vents. If your child is very active or you live in a warm climate, you may want to consider helmets with superior airflow. For general protection and casual use, this helmet offers a decent balance of features.

Pros

  • Converts between full and half face
  • Secure adjustable fit
  • Lightweight for kids

Cons

  • Ventilation could be better
  • Chin guard attachment feels basic
  • Limited size range for older kids

Specifications

Brand
OutdoorMaster
Target User
Toddler to Youth
Chin Guard
Removable
Sizes
XS (18.89-20.47in)
Vents
14
Outer Material
Polycarbonate
Check Price on Amazon→

Conquer the Trail: Your Guide to Trail-Ready Helmets with Removable Chin Guards

Investing in a quality mountain bike helmet with a removable chin guard is a smart move for any rider looking to tackle varied terrain. This type of helmet offers the best of both worlds: robust protection for aggressive descents and the breathability needed for challenging climbs. Choosing the right one means balancing safety, comfort, and versatility, ensuring you’re prepared for whatever the trail throws your way.

Unpacking the Essentials for Your Next Ride

When you’re eyeing a helmet that can adapt from enduro racing to casual trail rides, a few key features deserve your attention. Prioritizing these will lead you to a helmet that fits well, protects effectively, and enhances your riding experience.

  • Chin Bar Security and Ease of Use: The removable chin bar is the defining feature. Evaluate how securely it attaches and detaches, ideally with a simple, one-handed operation. A well-designed system should feel integrated and robust when in place.
  • Ventilation Strategy: With a chin guard, airflow becomes even more critical. Look for helmets with ample vents, especially in the front and top, to manage heat buildup during climbs and in warmer conditions.
  • Fit and Retention System: A helmet’s primary job is protection, which hinges on a secure fit. Pay close attention to the internal padding, the dial-based adjustment system at the rear, and how the straps lay against your head.
  • Weight Considerations: While protection is paramount, a lighter helmet will feel more comfortable on longer rides and won’t contribute to neck fatigue.
  • Durability and Construction: The materials used and the overall build quality are indicators of how well the helmet will withstand impacts and regular use.

Navigating the Purchase Path: Common Missteps to Avoid

Even with a clear idea of what you need, some common pitfalls can lead to buyer’s remorse. Keep these in mind to make a more informed decision.

  • Don’t solely rely on online reviews; try helmets on in person if possible to gauge fit and comfort across different brands and models.
  • Overlooking the weight and ventilation can lead to discomfort on long or hot rides, even if the protection is excellent.
  • Purchasing a helmet that doesn’t feel snug or has a chin bar that’s difficult to attach/remove will diminish its practical value.

Your Trail-Ready Convertible Helmet Awaits

For the aggressive rider prioritizing maximum protection and the option for airflow, the Leatt MTB Enduro 4.0 stands out. If a balance of safety certifications and a comfortable fit is key, the Fly Racing Rayce is a solid contender. For younger riders or those seeking a more accessible option, the ROCKBROS and Lixada models offer great versatility.

No matter your choice, these helmets deliver the flexibility to tackle varied terrain. Don’t let another ride pass you by – check the latest availability for your perfect convertible lid now!

Final 3 Picks: Enduro & E-MTB, Gravity Riding, and Aggressive Trail Riding

Ready to decide? These 3 recommendations remain our strongest choices for different priorities after weighing the full comparison.

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