Top 5 Mountain bike helmet under $100

Are you on a tight budget but still want a mountain bike helmet that is protective, comfortable, and durable? Then spare some time to compare attributes and customer reviews from the leading brands. Better still; go through this quick guide on the top 5 mountain bike helmets under $100 that guarantees you just that!

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Comparison Chart

Giro Verce MIPS Womens Dirt Bike Helmet

BELL Spark MIPS Adult Mountain Bike Helmet

Smith Convoy MIPS Bike Helmet

Razor 97878 Child Full Face Helmet



Smith Optics Convoy MIPS Men’s


  1. Giro Verce MIPS Womens Dirt Bike Helmet

    Giro Verce MIPS Womens Dirt Bike Helmet - Matte Grey Green (2021) - Universal Women’s (50-57 cm)

The Verce™ MIPS® mountain bike helmet is a lightweight, stylish safety headgear for women. It guarantees protection and comfort as you push your limits in the toughest terrain, making dirt biking a safe family sport. Besides, the Giro brand’s Crash Replacement Scheme allows you to replace your helmet at a reduced price should you get involved in a crash. 

Lightweight, Durable Construction

Giro Verce MIPS Women's Dirt Bike Helmet uses a shatter-resistant in-mold construction design that is long-lasting and lightweight. It is a dual full hardbody shell that comprises a tough outer layer fused to a polycarbonate inner one. A cozy EPS foam liner finishes the inner section for comfortable wear. 

MIPS Technology

The helmet features the integrated MIPS technology layer that guards against rotational forces should you hit your head at an angle. Here, the layer absorbs shock, hence delaying head movement inside the helmet in those first seconds of impact. That way, you can build your endurance on steep descents, jumps, obstacles, and controlling pedals and gears without worrying about the risk of brain injury in the event of a collision.


This helmet has the U.S.: CPSC BICYCLE FOR AGES 5+ and the E.U.: CE EN1078 certifications for safety. 

Roc Loc Sport MIPS Fit System

The Roc Loc Sport MIPS fit system allows riders to adjust the helmet fitting by up to 7 cm using one hand in seconds. Here, it is an easy and quick dial-in that results in a clicking sound and feel, as you move. 

Universal Fit Sizing

If your head circumference is between 50 cm to 57 cm, this helmet uses a snug inner adjustable ring that is a one-size-fits-all option for a secure fit. 

Extra Plush Padding

There is quick-dry foam padding inside the Giro Verce helmet, to keep you dry and comfortable regardless of any harsh weather conditions. 

Optimum Ventilation

There are up to 18 vents all around the Giro Verce MIPS Women’s Dirt Bike helmet. The front wind tunnels suck in the fresh air; circulate it around the head to cool you, before pushing it out through the rear vents. 


  • A lightweight trail-inspired full hardbody design for dirt biking

  • Integrated MIPS technology  for brain protection

  • Easy to adjust Roc Loc MIPS Fit System

  • Universal fit sizing 50 – 57 cm

  • Extra plush padding for comfort

  • Up to 18 vents for optimum ventilation

  • Retails in 5 reflective detailing and stylish colors

  • Removable visor


  • Uses fixed straps

  1. Bell Spark MIPS Adult Mountain Bike Helmet - Matte Black (2021), Universal Adult (53-60 cm)

If you are an all-mountain or trail rider, here is an adult mountain bike helmet that delivers on functionality, safety, fit, and aesthetics. Bell Spark MIPS has loads of features to give you the confidence to hit the trails. 


Durable Shell

The Bell Spark MIPS helmet comprises an in-mold polycarbonate shell fused to an inner EPS foam liner for sturdiness. It is a lightweight fusion at under 365 grams (Size UA), yet able to withstand hard impact at top speeds. 

Integrated Visor

The helmet uses an integrated visor to shield the rider from sun glare, direct winds, and flying objects. This visor adds to the helmet’s extended coverage, creating a unique, sleek design.



Inside this dual shell is a MIPS slip-plane that slows down rotational forces on certain impacts. It does this by sliding for 10-15mm in all directions upon impact. That way, the rider is safe from brain injury even in the worst head-on collision. 


ErgoDial Fit Systems

The ErgoDial Fit retention system is a set of straps and a standard buckle that are easy to use and adjust single-handedly. More so, these straps have the integrated MIPS slip plane in them, reinforcing the helmet’s protection. And, they no-twist tri-glide fasteners guarantee a custom, cozy fit. 

Wide Fitting Range

Spark MIPS retails in the universal adult (53 cm to 60 cm) and universal X-large (56 cm to 63 cm) sizes, accommodating more persons.


13 Vents

There are 13 large vents all around the Bell Spark MIPS helmet. These tunnels use a strategic design to channel air around the head, without trapping any debris. 

Sweat Guiding Padding

If you are planning to hit the trails during the hot summer months, grab this helmet to keep cool. Indeed, Bell Spark MIPS relies on a sweat guiding pad design that wicks away moisture from all points of contact with your skin. The pad leaves you dry and refreshed, to focus on the challenge at hand.


  • A lightweight shell with integrated MIPS®

  • Accommodates a wide range of head circumference

  • Has extended coverage with a sleek design

  • Relies on the Ergo Fit™ system for quick adjustment

  • Purchase includes crash replacement plan at a reduced price

  • CE EN1078 certified


  • Uses a standard buckle

  1. Smith Convoy MIPS

If you struggle to get a custom-fitting mountain bike at an affordable price, check out the Smith Convoy MIPS. It is a small, lightweight headgear that adjusts to the contours all around your head. It achieves this by optimizing integration solutions ideal for a mountain bike helmet. 

Lightweight, Single Layer Webbing Construction

Unlike most mountain bike helmets, Smith Convoy MIPS relies on a single in-mold layer to create a low-bulk, yet shatter-resistant shell. That way, it weigh