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Giro Helios Spherical MIPS Helmet
Giro Helios Spherical MIPS Helmet

Helios Spherical MIPS Helmet

Mfg PartNum:
  (5 customer reviews)
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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Advance Performance for the Adventurous

The heart of the Giro Helios' extraordinary design and performance is Spherical Technology, which utilizes a ball-and-socket design powered by MIPS the market-leading brain protection system that can help to reduce rotational forces.

Spherical Technology allows the helmet outer liner to rotate around the inner liner during a crash, and also allows Progressive Layering of the inner and outer liners to provide more comprehensive protection and performance. In addition to advanced head protection, the Helios 15 Wind Tunnel vents provide exceptional cooling power that's enhanced by the patented Roc Loc 5 Air fit system and plush, antimicrobial Ionic+ padding for exceptional sweat absorption.

It's the ideal match for your road and gravel adventures.


  • MIPS Spherical- Essentially an invisible low-friction layer sandwiched within two layers of EPS foam, the result is a reduction of rotational forces and the elimination of the plastic slip plane of the original MIPS design. Redirects impact energy by allowing the helmet's exterior liner to rotate independently of the interior liner in an angled impact.
  • Independent, In-Mold liners with Spherical ball-and-socket design
  • Polycarbonate shell
  • Hardbody lower shell
  • 15 wind tunnel vents with internal channeling
  • Roc Loc 5 Air Fit System

  • Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

    Giro Adult Helmet Size Chart

    Certification:  U.S.: CPSC BICYCLE FOR AGES 5 


    Weight: 270g (medium) 

    Matte Black Fade - Small

    Mfg PartNum: 7129134 

    Matte Black Fade - Medium

    Mfg PartNum: 7129135 

    Matte Black Fade - Large

    Mfg PartNum: 7129136 

    Matte White/Silver Fade - Small

    Mfg PartNum: 7129170 

    Matte White/Silver Fade - Medium

    Mfg PartNum: 7129171 

    Matte White/Silver Fade - Large

    Mfg PartNum: 7129172 

    Matte Black/Red - Small

    Mfg PartNum: 7129152 

    Matte Black/Red - Medium

    Mfg PartNum: 7129153 

    Matte Black/Red - Large

    Mfg PartNum: 7129154 

    Matte Warm Black - Small

    Mfg PartNum: 7129161 

    Matte Warm Black - Medium

    Mfg PartNum: 7129162 

    Matte Warm Black - Large

    Mfg PartNum: 7129163 

    Matte Black Fade/Highlight Yellow - Small

    Mfg PartNum: 7129143 

    Matte Black Fade/Highlight Yellow - Medium

    Mfg PartNum: 7129144 

    Matte Black Fade/Highlight Yellow - Large

    Mfg PartNum: 7129145 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Fits well, much cooler than my other helmet
    by 2Slow
    Cycling Enthusiast

    I'm a fast recreational rider, 2-2.5K miles a year, typically ride in the A group. Was running an aero helmet, because I'm all about aero (even my water bottles are aero!) But on hot says I suffered way too much and it impacted my performance. This combined with having gone down a couple times last year meant I needed a cooler helmet and one that provided the best protection I could get. Can't train with a brain injury!

    The Giro has proved to have much better with ventilation for those KOM efforts. And I feel better going all out when I know that I have the latest in protection.

    Reviewed 4/5/2021
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    A helmet that is at the Head of the Class.
    by Anonymous
    Cycling Enthusiast
    Southern Oregon

    Years of having what I would consider helmets has now been eclipsed by what is the very best helmet I have worn. Comfortable, adjustable and extremely light weight while still providing utmost protection. A perfect helmet!

    Reviewed 4/2/2021
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    Feels good and looks good
    by Anonymous

    Got the white one, does the job. Hopefully I won't actually get to test out the power of the spherical technology and the MIPS system but it's comfortable, easy to adjust, feels like I'm wearing nothing that's how light it is and I'm comfortable knowing I have a premium protection system on my head.

    Reviewed 3/18/2021
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    Back to Giro
    by canabasa
    Cycling Enthusiast
    New Hampshire

    After many years of using a Catlike helmet, my wife returned to using Giro and the Giro Helios Spherical MIPS helmet didn't disappoint her as she really likes her new helmet. It is nice and lite. It fits really well. The adjustability is a simple dial in the back, making it easy when it is on her head.

    Reviewed 3/15/2021
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    Does the trick
    by Anonymous
    Competitive Racer
    Portland, Or

    My previous helmet was a Giro Aether - so comfortable and light. This is a touch heavier and covers more skull. I'm still getting used to it and wonder how long this break-in period will last.

    Reviewed 3/15/2021
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