The 5 Best Mountain Bike Helmets of 2021


A mountain bike helmet is one of the most important accessories for mountain bike riding. But a mountain bike helmet has more head coverage than a road helmet. These gears also have peaks to keep the sun and rain out of the eyes.

They are much lighter and also render tremendous ventilation than a motorbike helmet. Riders should not compromise on the quality of the helmet even if the gear budget has stretched thin. Though the prices of mountain bike helmets are rising, there are very few reasons to complain.

Retention and fitting systems of MTB helmets continue to improve and the safety advances such as the MIPS helps in reducing the chances of a serious injury considerably. For important considerations to look for while choosing a helmet, consider our buying guide. We have also made your work simpler by listing the best MTB helmets here.


Best Mountain Bike Helmets

Quick Answer: The 5 Best Mountain Bike Helmets – [2021]

  1. Troy Lee Designs All Mountain Bike Helmet
  2. POC Tectal, Helmet for Mountain Biking
  3. Giro Chronicle MIPS MTB Helmet
  4. Smith Optics Forefront All Mountain Bike Helmet
  5. Bell Super 3R MIPS Adult MTB Bike Helmet

Best Mountain Bike Helmets Reviews

#1. Troy Lee Designs All Mountain Bike Helmet 


Troy Lee Designs All Mountain Bike Helmet At a Glance:
  • Dimensions: 15 x 10 x 10 inches
  • Weight: 1.05 pounds
  • CPSC certified
  • EPS + EPS impact liner
  • Innovative breakaway visor
  • Huge intake and exhaust ports
  • Static pure silver comfort liner
  • Quick-dry moisture wicking capability
  • Semi-adjusting strap dividers
  • 3-year manufacturing warranty
The Troy Lee All mountain bike helmet is an excellent MTB trail helmet that checks all the boxes. Its stylish shell features excellent intake and exhaust ventilation ports. There are also a number of additional features such as breakaway visor screws for the comfort of the rider.

This helmet is one of the industry-first dual density EPP and EPS liner that protects against both low and high speed. The helmet safeguards the safety of the biker intact. The helmet is CPSC certified and has 3-year manufacturer’s warranty as well.

Troy Lee Designs Helmet

There are an adjusting strap and static pure silver comfort liner to ensure and enhance comfort in every bit of the helmet. The helmet renders an additional 16% more frontal EPP and EPS. There is absolutely no chance of snagging during a crash with the help of its breakaway visor screws.

Its excellent intake and exhaust ports offer 25% more air ventilation for maximum cooling power along with a quick-dry moisture-wicking capability. Its low profile and self-adjusting strap dividers render a perfect fit irrespective of the head shape.

#2. POC Tectal, Helmet for Mountain Biking


POC Tectal, Helmet for Mountain Biking At a Glance:
  • Dimensions: 17 x 10 x 8 inches
  • Weight: 2.15 pounds
  • EPS liner include
  • Uni-body shell construction with outer PC shell
  • Full coverage at the temples and back of the head
  • Adjustable visor
  • Size adjustments
  • Recco reflectors
The POC tectal Helmet for Mountain biking is a well ventilating MTB helmet which has been developed specifically for enduring racing, most aggressive trail riding, etc. and incorporates the aramid bridge system.

The helmet features a POC proven and award-winning Trabec design. It features an EPS liner with extremely high levels of protection. Its unibody shell construction enhances the safety properties of the helmet along with the integrity of its construction. With all these inherent properties, the helmet still maintains a low weight.

This lightweight mountain bike helmet offers more coverage than any conventional mountain bike helmets and features a highly effective ventilation design. Its construction has been evaluated through wind tunnel testing and its size adjustment system ensures a secure and a comfortable fit. The helmet also features a recco reflector and an adjustable visor to ensure optimal comfort for the biker.

#3. Giro Chronicle MIPS MTB Helmet


Giro Chronicle MIPS MTB Helmet At a Glance:
  • Dimensions: 15 x 14 x 9 inches
  • Weight: 2.4 pounds
  • Synthetic material
  • In-mold polycarbonate shell
  • EPS lining system
  • Extra plush Coolmax padding
  • Deep coverage visor
  • Wind tunnel vents with internal channeling
When the trail is full of challenging climbs and technical descents, then the chronical MIPS MTB helmet is the best option available. It features the essential protection and performance that one requires in an affordable package.

This is a premium MIPS helps and holds a lot of lock and key features. Its compact size renders a confident and deep coverage and its Roc Loc five feet system helps in an easy dial in fit tension. It is also possible to adjust the vertical position with a single hand.

The Chronicle MIPS is google compatible and it’s POV visor allows the rider to lift the visor and place the goggles at the front of the helmet. Its Coolmax padding system has excellent wicking properties and features an extra-plush for all-day comfort on the trail. The helmet has 14 wind tunnel vents with internal channeling along with a POV plus visor.

#4. Smith Optics Forefront All Mountain Bike Helmet


Smith Optics Forefront All Mountain Bike Helmet At a Glance:
  • Dimensions: 11 x 13 x 8 inches
  • Weight: 1.95 pounds
  • Shell material: Aerocore technology
  • No multiple impacts
  • Aerocore ventilation system
  • Vaporfit adjustment system
  • Visor us present
This is one of the best Mountain bike helmets and renders the best ventilation for the riders with its Koroyd tube construction for breathing. These tubes are tiny, extruding and co-polymer tubes that absorb about 30% more impact than the traditional EPS foam padding.

Owing to their hollow structure and nature, they allow the air to flow freely which is not possible in foam. Its microstructures allow less material use for the construction of the helmets. This is indeed a highly protective gear that weighs about 285 grams.

It not just looks cool and great during biking but is also extremely protective. Its AirEvac system moves air away from the goggles to keep them fog-free. Its visor has two positions to help keep the sun out of the eyes.

There is also a threaded brass insert at the top of the helmet for GoPro camera mounts and to mount motion lights. Its fit is secured with Vaporfit retention systems for additional safety.

#5. Bell Super 3R MIPS Adult MTB Bike Helmet


Bell Super 3R MIPS Adult MTB Bike Helmet At a Glance:
  • Dimensions: 14 x 10 x 11 inches
  • Weight: 2.88 pounds
  • No twist tri-glides
  • XT2 padding
  • MIPS certification’
  • Wraparound protection
  • Overbrow ventilation
  • Adjusting the visor system
  • Camera mounts
  • Available in small, medium and large sizes
This full-face mountain bike helmet features a number of quick-adjust fasteners that helps the biker to maintain the straps flat and in a good position. It is of quick-drying materials such as real silver fibers, that inhibit the growth of odor.

It features a multi-directional impact protection system to decrease rotational forces resulting in impacts. There is a protective chin bar for adapting to different trail riding, which attaches with a simple three-step connection process without requiring any tools.

Mountain Bike Helmet

Its overbrow ventilation has intake ports at the brow of the helmet to usher in cool air. It also pushes through the air channel matrix for a full head ventilation system. Its adapting visor system accommodates glasses and goggles that work with or without the visor. It also includes a camera mount without tapes and zip ties.

Buyer’s Guide for Best Mountain Bike Helmet


Top Features of The Best Mountain Bike Helmets

The best mountain bike helmet is a mandatory piece of accessory on the trail. Here are the top features that one needs to find in their mountain bike helmets.

  • Safety standards
  • Type of helmets
  • Size and Fit
  • Ventilation
  • Mounts

Safety Standards:

Safety is the number one standard in choosing a helmet. The consumer product safety commission has set a few standards that helmet manufacturers have to meet to sell their headgear. It is important for the helmets to pass the CPSC test and carry the same on their label.

Some of the helmet brands also choose to have additional safety labels. Some of these certifications are American National Standards Institute. The current technology in helmet manufacturing is that helmets need to be safe and lightweight.

The MIPS technology promises a thin layer of material that allows the helmet to absorb more force than former helmets. This technology prevents concussions and brain damage in the event of a crash. A number of helmet brands incorporate MIPS in their high-end helmets that include Bell, Troy Lee, Giro and a lot more.


Type of Helmets:

One has to choose a type of helmet that depends on the style of mountain biking that one does. Cycling helmets are broadly categorized into two categories, full face, and half shell. Full face helmets are used for downhill mountain biking and render stricter protection on the head, face and neck.

Some of the MTB helmets are half shelled, similar to road cycling helmets. These helmets cradle the head and have additional protection on the back and sides. Visors are ubiquitous on MTB helmets and they keep the mud, rain and low branches off the face of the rider.

Size and Fit:

For a safe and a comfortable ride, follow these points before narrowing down on the best MTB bike

  • Find the right size: It is important to choose the best size of the helmet as a large range of sizes are available for every model. Size ranges from XS to XL and some helmets have their own women’s model as well.
  • Consider the head shape: choose a helmet that fits the shape of the head. Some of the brands are round, whereas others are flat at the sides.
  • Ensure a snug fit: Ensure that the helmet fits snugly even before buckling the straps. The helmet should not slide from side to side or from front to back.
  • Check the buckle strap and pads: Finally, make sure the straps fit flat around the ears and flat under the chin. Ensure that the straps adjust tight enough so that they don’t slip over the chin. Ensure that the pads are comfortable and they don’t dig into the temples.
  • Weight of the helmet: Pay attention to the overall weight of the helmet, it should not be heavy on the neck and shoulders or limit the ability to turn the neck.


Proper ventilation on the bike helmet is mandatory on hot days and on muggy rides. A good MTB helmet has pores to allow airflow. Most of the ventilation is available on half shell versions. And helmets with good ventilation options are pretty expensive.


This is an exceptional addition for those who want to document their rides and for those who ride overnight. Some of the helmets have mounted to hold a camera or additional lighting to facilitate the ease of the ride.

Mountain bike helmet

FAQ for Mountain Bike Helmets

What are the important factors in choosing the best helmet?

The two most important factors in choosing the best Mountain Bike helmets are its fit and protection. The helmet will be of no use if it doesn’t fit the head properly. Most of the modern helmets offer enough protection when out for terrain expedition.


What is the best-ventilated MTB helmet?

The helmet that has enough vents openings to allow the airflow is the coolest helmets with tremendous ventilation. Though the size of the vent is not everything, the design of the vents is critical for an MTB helmet.


How to get the right fitting MTB helmet?

The MTB helmet should ideally fit low on the head and protect the forehead and cover the back of the head. The front and the occiput are the two important areas that are likely to hit the ground. The helmet should fit snugly and not move when the biker tries to rotate. Also, it should not be so tight to be extremely uncomfortable.

The strap should fit under the chin snugly but not choke the rider. choose a helmet with a four-point harness system so that it holds the head securely in the event of a crash.


When to replace a helmet?

After a crash, it is mandatory to replace the helmet. Though it looks fine from outside, the foam inside the helmet is for one-time use only, and it crushes and compacts to absorb all the impact on the head.


Buyer’s Tips and what to look for in the MTB helmet?

Similar to the road bike helmets, the mountain bike helmet also features an inner EPS liner that gets glued or molded to the hard outer plastic shell of the MTB helmet. Of the two types of these helmets, open face helmets render a versatile riding experience and they are good for road biking as well.

The Full face mountain bike helmets for good for downhill riding and other speed riding where there is a greater risk for injury. Other features to carefully looking for before making the purchase decision are,

  • Comfort
  • Liner
  • Vents
  • Retention device
  • Weight
  • Safety
  • Finding the helmet with the right fit

Mountain bike helmet 2


This is one of the most important characteristic features of an MTB helmet. If it is not comfortable, then there are all chances that the user will skip wearing it. The helmet should fit snugly, not too tight to be uncomfortable and not lose to pose a safety threat.

Most of the brands are available in different sizes for a comfortable fit and are a bit expensive as well. But the additional cost should not come as a compromise for safety.


The liner is an important material used inside the helmet and is an important component of its design. It behaves as a shock absorber and will take up the energy of an impact, to help the biker protect their brain and their skull. EPS is the commonly used liner material, as it is lightweight and also tough.


Vents are tiny pores on the face of the helmet that helps to keep the biker cool while riding. It allows the cool air to enter from the front and hot air to release through the rear exhaust vents. For those who ride in hot conditions, it is important to choose a helmet design with plenty of vents.

Retention Device:

Most of the helmets these days have a retention device of some kind. It is a simple band with a dial. The biker has to turn the dial to enhance the tension and create a better fit.


It is good to choose a lightweight helmet, for the entire weight of the gear will fall on the head of the biker for hours.


All of the Mountain Bike helmets should meet the American Society for Testing and Materials and also the U.S Consumer product safety commission requirements, regardless of the features, design and price range.

Finding the helmet with the right fit:

This is one of the most important aspects of choosing a helmet. Choose a model that the best fit. It should fit snuggly and not too tight and sit an inch above the eyebrows. There should be enough wiggle room as well on the sides to wear goggles and sunglasses.

Ensure that no area of the helmet should be painfully tight and does not make any secure contact with the skull. It is important for the helmet to have additional liners and pads for additional comfort.


Final Words:

It is important to wear a helmet while riding a bicycle to protect the head from injury in case the biker falls off the bike. A mountain bike helps renders an additional degree of protection that a smaller road bike helmet to protect the delicate face and neck of the user. We hope our guide will help you in choosing the best helmets for your MTB bikes.


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