There is no question on why one should wear a helmet while riding a mountain bike.
But there could be doubts regarding which helmet to buy and the distinguishing features of several helmets available today.
In this post I have made a detailed list of the best mountain bike helmet under 100 dollars.
Comparing Top 2 Helmets To Buy
| Best Technology | Value For Money | |
|---|---|---|
| Preview |
 
|
 
|
| Product | BELL 4Forty MIPS | O'Neal Tactical Helmet |
| Weight | 1.5 pounds | 2 pounds (approx.) |
| Shell Material | Polycarbonate | Polycarbonate |
| Vents | 15 | Multiple |
| Type | Half-Face | Full-Face |
| Price | CHECK ON AMAZON | CHECK ON AMAZON |
9 Best Mountain Bike Helmet Under 100 Dollars (Deep-Dive)
There are mountain bike helmets available in varied price ranges. Check out our curated list on best helmets to buy under $50.
However, if your budget is up to $100, this is typically considered a mid-range from pricing perspective.
There are several mtb helmet options available in this price range.
Unfortunately, the myriad of options available also makes it challenging to choose one that would best suit your mountain biking need.
Therefore, I did in-depth research to understand the features of these helmets and found 9 best options suitable for any regular mountain bike rides.
The Bell 4Forty mtb helmet has a sturdy outer shell made of polycarbonate material, using fusion in-molding technology.
The helmet is integrated with MIPS, which becomes responsible for reducing impact, caused due to rotational forces.
The commendable slip-plane technology is minimalist and has an easy-to-use rubber dial for adjustments.
The MTB helmet also encompasses a moisture-wicking sweat guide pad, which is capable of absorbing moisture away from the eyewear and brow pad.
Moreover, it has a goggle guided compatible visor, which can be used with glasses and goggles alike.
Available in small, medium, and large sizes, mountain bikers use this helmet due to its sleekness, impact resistance feature, and stylish look.
Quick Feature Re-Cap
- Brand: BELL.
- Weight: 1.5 pounds.
- Material: Polycarbonate.
- Suggested for: Men.
Specially engineered in the much-acclaimed BASE CAMP test lab, the helmet is thought to offer maximum protection to a mountain bike rider for whom rough terrains and impacts are an everyday affair.
The multi-directional impact system integrated into the helmet ensures redirection of energy in the event of a crash.
The helmet offers optimum ventilation with 18 vents, which have internal channeling.
The in-molding construction is rugged and incorporates the Roc Loc Sport fit system, which is known for the comfort that it offers to the wearer.
The features also make it a highly versatile mountain bike helmet, which can be your close aid during a wide range of rides, such as a single-track rides to fire-road adventures.
With multiple colors to choose from, you can get your hands on one of the most excellent best mountain bike helmet under 100 when you buy this one.
The helmet is available in universal fit sizing, so you do not have to worry about getting the best fitting helmet for your next biking adventure.
The helmet is made to keep the rider comfortable even after miles of riding, wearing one.
Quick Feature Re-Cap
- Brand: BASE CAMP.
- Weight: 1.6 pounds.
- Material: Polycarbonate.
- Suggested for: Unisex Adult.
This helmet aims at providing better protection for the brain by redirecting or reducing the rotational energy during an impact.
In addition, the makers have added extra coverage for better safety to ensure that the riders have a hassle-free time on the trails.
Like most other sought-after helmets, the Fox Racing MTB helmet too has venting channels that are optimized and provides excellent cooling with in-molded EPS.
The liner of the helmet is removable, washable, and adept at wicking moisture.
The fit system is MIPS integrated, which efficiently cuts down the weight, offering a seamless fit to the wearer for a comfortable mountain bike ride.
Quick Feature Re-Cap
- Brand: FOX RACING MAINFRAME
- Weight: 320 grams.
- Material: Polyester inner liner.
- Suggested for: Men.
The Convoy MIPS version from Smith Helmets weighs a meager 0.3 kg, with a dimension of 12.6 x 9.84 x 7.48 inches.
The makers of the helmet are committed to proving helmets that would fit as if they were tailor-made for the wearer’s head.
The outer shell of the helmet is made of polycarbonate material, which has two air vents that are fixed for consistent airflow.
The lightweight helmet has a visor integrated into it, and it comes with seamless single-layer webbing.
The in-mold construction is also lightweight, making it the favorite of several mountain bike riders.
Available in multiple colors and sizes, the helmet is sure to have the hearts of enthusiastic riders.
The mtb helmet has an adjustable strap in the back, making it convenient to adjust the fit.
The helmet is designed in such a way that the vision or movement will not have to be compromised while wearing one.
You can quickly wear your sunglasses underneath, and they will stay in place for you to get the most out of them.
Quick Feature Re-Cap
- Brand: SMITH BIKE
- Weight: 0.66 pounds.
- Material: Polycarbonate outer shell
- Suggested for: Unisex adult
This drone-silver colored helmet from the veteran helmet makers Troy Lee designs is made to offer maximum safety while accentuating your mountain biking look.
The outer shell, made of polycarbonate material, is in-molded and is equipped with EPS liner on the back and sides.
The best feature of this helmet is its ventilation, which is optimum, with 16 ports that are capable of eliminating heat by ushering in cool air.
The vents are strategically located, with eight each in the front and the back.
In addition, the helmet is extensively adjustable, all thanks to the triple position adjustable retention system.
Similarly, the head shape can be personalized, and the eyewear fit has no contenders.
The visor is adjustable, which negates the possibility of the visual being concealed by it.
The single-piece comfort liner can be removed and washed as required, making it a hygienic option to go for.
Quick Feature Re-Cap
- Brand: Troy Lee Designs.
- Weight: 300 grams.
- Material: Polycarbonate outer shell.
- Suggested for: Unisex Adult.
The O’Neal Tactical MTB helmet should be on the list of best mountain bike helmet under 100 due to all the superior features that it comprises at a reasonable price.
Available in three exciting color combinations, this helmet has a chin guard that would give added protection in the event of a crash.
This helmet offers maximum ventilation, all thanks to the numerous air vents that it encompasses.
A strategically incorporated fidlock system makes closing and opening the buckles without any hassle.
The helmet is one of the most sought-after as it exceeds the EN1078 safety standard.
Unlike most other cheap alternatives, the graphics on the helmet are durable.
Ideal for both enduro and downhill biking alike, this helmet has been developed after years of research and testing in collaboration with several known enduro and downhill riders.
This unisex helmet’s outer material is made of Acrylonitrile Butadiene Styrene, and this model’s name is Sonus Deft Mountain Bike Helmet.
Quick Feature Re-Cap
- Brand: O’ Neal Helmets.
- Weight: 3 pounds (approx.)
- Material: Plastic.
- Suggested for: Unisex Adult.
This best mountain bike helmet under 100 is notably lightweight and can be used for protection while you are on a trail, enduro, or freeride biking.
The outer shell is made with polycarbonate material, and the two-shell construction is aimed at offering extra protection to the wearer during high-impact circumstances.
This Team Obsidian’s helmet covers all the needs of a mountain biker, with superior ventilation through 22 air vents.
The design is low-profile and innovative, making it a sought-after option for those aiming to sport a cool look while riding their bikes.
The chin strap is convenient to use with its quick-release feature, and it is easy to achieve a snug fit, with the dial fit provided at the back.
The helmet is made with high-end impact-resistance technology; the helmet keeps you cool while looking stylish.
This helmet weighs a meager 0.6 pounds and is being marketed as a unisex helmet.
Quick Feature Re-Cap
- Brand: Team Obsidian.
- Weight: 0.6 pounds.
- Material: Polycarbonate.
- Suggested for: Unisex Adult.
This full-face helmet has a fully adjustable visor, which works on the side screws made of aluminum.
The outer shell of the helmet is made of polycarbonate material, which is injection molded thermal alloy polycarbonate, for ultimate toughness.
The helmet weighs 2 pounds and can be used for BMX and cycling, apart from mountain biking.
The low-profile full-face helmet is made to offer maximum protection to the wearer even while performing the advanced mountain biking techniques.
It has an adjustable plastic buckle, and though not made in the U.S.A, it conforms to the CPSC standards.
The excellent ventilation offered by the helmet makes it suitable to wear even on the hottest days, and this helmet provides a perfect fit, as vouched by several users.
Quick Feature Re-Cap
- Brand: Demon United.
- Weight: 2 pounds.
- Material: Polycarbonate.
- Suggested for: Unisex Adult.
The Irafaya MTB helmet is constructed using thick EPS foam and a polycarbonate shell.
With ASTM and CPSC certifications, the safety standard of the helmet is at par with any other helmets in the price range.
The technology used to manufacture the helmet is integrated-molding technology and has a dial system, which is relatively user-friendly.
The removable liner is soft and efficiently wicks moisture, providing you a cozy feeling while wearing the helmet.
The high-density pad is adept at absorbing impact significantly, offering excellent protection to your head.
The helmet is designed to ensure that it does not strain your head and neck while offering ultimate protection.
The helmet encompasses startling taillight and a strap with a reflective feature, which is highly beneficial in helping the riders behind you to identify your direction.
The various modes available in the taillight make it even more user-friendly.
In case you run out of battery, the replacement battery that comes in the package can prove to be a great relief.
Other items included in the package are a camera mount, a backpack bag, and two washable pads.
The camera mount is suited for most action cameras.
The backpack bag can be used to store the helmet when not in use conveniently.
The extra pads provided in the package can help you in washing and drying the used pads for maximum hygiene.
Moreover, the pads help get rid of the not-so-pretty sweat smell that could have developed as a result of prolonged use.
Quick Feature Re-Cap
- Brand: Irafaya.
- Weight: 0.65 pounds.
- Material: Polycarbonate.
- Suggested for: Unisex Adult.
Final Words
All the helmets in this list are considered to offer maximum protection to the wearer.
But there can be differences in the shell material, liners, fit, and the amount of ventilation provided.
Personal preferences also play a significant role when making a buying decision.
I hope this list of the best mountain bike helmet under 100 dollars will help you choose a helmet that offers maximum protection and comes with all the important features.
P.S. You may also want to check out the best mountain biking helmets under $50.
