Size & Buying Guides

Top 4 Mountain Bike Helmets

Carol Ching

Check out our top 4 mountain bike helmet picks for 2021. With picks from every price point, there's a bike helmet for everyone.
Top 4 Mountain Bike Helmets

Top 4 Mountain Bike Helmets

Whether it's your first season out on the trails or ripping downhill on the daily, check out our quick breakdown of the Top 4 Mountain Bike Helmets for 2021. We'll go through key tech specs, pros and cons of each helmet.

Giro Fixture MIPS Helmet

Giro Fixture MIPS Helmet

Price $89.99
Size UA 21.25” - 24” / 54 - 61cm
Fit System Roc Loc® Sport MIPS®
Ventilation 18 vents
Contruction In-Mold polycarbonate shell with EPS liner
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Giro’s undeniable bargain of a helmet ticks off the average rider. The Fixture MIPS comes in six up-to-date colors, has a fit system that holds its adjustment and includes a MIPS liner inside for additional safety.

  • Removable Visor
  • Quick-dry padding
  • MIPS technology
  • Padding is on the lighter side
  • Visor non-adjustable
  • No accessory mounts

Specialized Ambush Comp Angi MIPs Helmet

Price $159.99
Size S-XL
Fit System Mindset 360
Ventilation 20 vents
Contruction In-Mold shell with Composite Matrix
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Speciliazed Ambush Comp Angi MIPS Helmet

This is their top-of-the-line half-shell helmet, and it features a unique new crash detection system they call ANGi. ANGi is a small sensor attached to the back of the helmet that can detect the forces associated with a crash and notify your emergency contacts via a Bluetooth connection to your smartphone and the Specialized Ride App.

  • Crash detection system
  • Adjustable visor
  • MIPS technology
  • Goggle friendly peak
  • Larger than average sizing
  • No height adjustment on cradle and strap

POC Axion Spin Helemt

POC Axion Spin Helmet

Price $169.99
Size XS-S, M-L, XL-XXL
Fit System 360° fit system
Ventilation Highly ventilated
Contruction Optimized PC shell with EPS liner, extended shell around temples and back of head
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POC's most affordable mountain bike helmet, when the design, quality and fit are taken into consideration, the Axion Spin becomes an excellent choice for those shopping in the mid-range price bracket. Offering exceptional safety features all packed up in a lightweight package.

  • Breakaway Visor prevents neck injuries
  • Sleek design with high quality finishes
  • Ample ventilation
  • Sizing is complicated for those between size ranges
  • No goggle clips

Bontrager Rally Wavecell Helmet

Price $209.99
Size S-L
Fit System BOA System
Ventilation 13 vents
Contruction PC SHell, EPS foam/ WaveCel
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Bontrager Rally WaveCel Helmet

The Bontrager Rally WaveCel helmet is one of the safest helmets on the market, hidden under the well designed shell is ample safety features and a BOA dial adjustment system. Backed by Trek's crash replacement warranty, this helmet is perfect for riders wanting to test the limits of their helmet.

  • WaveCel tech at an affordable price
  • Widely adjustable visor
  • BOA stytem
  • Reduced airflow
  • Intrusive brow
  • No glasses or GoPro mount