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Quick answer
The Giro Fixture MIPS II is Giro’s value trail half-shell: integrated Mips, an In-Mold polycarbonate shell and a Roc Loc Sport dial, at $84.95 on giro.com (all four fits, checked September 30, 2026). The thing that matters most is buying the right fit. Giro makes it in four versions:
- Universal Adult (54–61 cm): the default for most adult heads.
- Women’s (50–57 cm): Giro’s women’s version.
- XL (58–65 cm): for adults with bigger heads. It is not a kids’ helmet.
- Youth (50–57 cm): the version to buy for a kid.
Buy it if you want a Mips-equipped helmet for fire roads and singletrack at a value price and your head measures inside one of those ranges. Skip it if you ride bike parks or aggressive enduro and want more coverage. Start with our eMTB and aggressive trail helmet guide or, for full-face coverage, our Fox Proframe RS review.
Which Fixture MIPS II size fits you
Each fit is one shell size, and the Roc Loc Sport dial adjusts within it. So the fit you pick matters more than any feature. Start with a tape measure.
How to measure (Giro’s method)
Per Giro’s size guide: wrap a measuring tape around your head, keeping it level from front to back, and note the measurement. Giro says the helmet should fit with a little room when the fit system is loose, and sit low enough to protect your forehead without hindering your vision. Then adjust the fit.
| Fit | Head size | Certification on Giro’s US page | Weight (Giro) | Where to buy |
|---|---|---|---|---|
| Universal Adult | 54–61 cm | CE EN 1078 | 330 g | giro.com |
| Women’s | 50–57 cm | "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older" | 325 g | giro.com · Amazon |
| XL | 58–65 cm | "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older" | 345 g | giro.com |
| Youth | 50–57 cm | CE EN 1078 | Not listed | giro.com · Amazon |
Head sizes, certification wording and weights are from Giro’s US product pages, checked September 30, 2026. Giro listed $84.95 for each fit that day.
From the Bike198 shopIs My Bike Ok?$26Shop Universal Adult (54–61 cm): the default
This is the core adult size. If your head measures 54 to 61 cm, start here. Giro’s US page lists 330 g and CE EN 1078. See the Fixture MIPS II (Universal Adult) on giro.com.
Women’s (50–57 cm)
Giro’s women’s Fixture MIPS II covers 50 to 57 cm. Giro’s US page lists 325 g and "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older". Women’s Fixture MIPS II on giro.com · Women’s Fixture MIPS II on Amazon (sold and shipped by Backcountry when checked September 30, 2026).
XL (58–65 cm): bigger adult heads
The XL is for adults whose heads measure 58 to 65 cm; Giro lists it on its adult size chart. It’s the version pictured on this page. Giro’s US page lists 345 g and "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older". The XL is not a kids’ helmet. If you’re buying for a child, go to the Youth fit below. Fixture MIPS II XL on giro.com.
Kids: Fixture MIPS II Youth (50–57 cm), not the XL
Giro makes a separate Fixture MIPS II Youth with a 50–57 cm range. That’s the one to buy for a kid. Measure your kid’s head first: under 50 cm is below the Youth fit’s listed range. Giro’s US Youth page lists CE EN 1078 and doesn’t list a weight. Fixture MIPS II Youth on giro.com · Fixture MIPS II Youth on Amazon (sold and shipped by Backcountry when checked September 30, 2026). Getting a kid into trail riding? Our guide on how to teach your kid to mountain bike covers the rest.
Specs from Giro
- Construction: In-Mold. Per Giro, a polycarbonate outer shell fused to the impact-absorbing foam liner.
- Mips: Integrated Mips Brain Protection System. Giro’s exact wording is below.
- Fit system: Roc Loc Sport, one-handed, 7 cm adjustment range, ponytail compatible (per Giro).
- Weight (Giro): 330 g Universal Adult, 325 g Women’s, 345 g XL. Youth not listed.
- Materials (Giro’s Adult and Youth pages): 50% EPS, 15% PC, 26% PP, 3% nylon, 3% POM, 3% PU.
- Other details Giro lists: quick-dry padding and reflective rear decals.
- Visor: the helmet pictured has one, and Giro sells a Fixture replacement visor as a spare part. Giro’s US product pages don’t describe it further.
- Price: $84.95 on giro.com for all four fits (September 30, 2026).
Mips on the Fixture MIPS II: what Giro claims
Giro’s wording is careful, so here it is exactly: "Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to rider’s brain in certain impacts." Giro also says versions with Integrated Mips "may provide an additional measure of protective capability in certain impacts."
Note the "can," the "may" and the "certain impacts." Per CPSC’s required helmet label wording, no helmet can protect against all impacts. This page doesn’t rank the Fixture’s protection against other helmets.
Giro’s product pages also carry this Mips warning: "Some MIPS® low-friction layers, along with other parts of a helmet, might cause lacerations to the wearer’s head/face in some accidents." Giro asks you to contact them if you want more information.
Certifications by fit
Giro’s US product pages list a different certification line depending on the fit. Here is exactly what each page shows (checked September 30, 2026):
- XL (58–65 cm): "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older"
- Women’s (50–57 cm): "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older"
- Universal Adult (54–61 cm): "CE EN 1078"
- Youth (50–57 cm): "CE EN 1078"
CE EN 1078 is the European standard for bike helmets. Giro’s US Adult and Youth pages don’t show a CPSC line, so this page doesn’t claim one for those fits. Per CPSC, bike helmets must carry a certification label stating compliance with its standard (16 CFR Part 1203). Check the certification label inside the helmet you receive.
When to replace it
- Per Giro: "Helmets should be replaced every 3–5 years, or immediately after a crash or visible damage."
- Per CPSC: a helmet that has taken an impact may be damaged so that it no longer protects, and that damage may not be visible. CPSC’s required label wording says to return it to the manufacturer or destroy and replace it.
- Giro’s crash replacement program: per Giro’s Help Center, Giro offers crash replacement for helmets. Contact Giro Customer Service with details and photos of the damaged helmet.
- Don’t paint or modify it: per Giro, painting or modifying a helmet may compromise its safety and void the warranty.
If you crash in it, replace it, even if it looks fine.
To check any helmet for recalls, search CPSC’s recall list and Giro’s recall page.
Pros and cons
Pros
- $84.95 on giro.com with integrated Mips, In-Mold construction and a Roc Loc Sport dial.
- Four fits, including a separate Youth version for kids.
- Roc Loc Sport dial: one-handed, 7 cm range, ponytail compatible (per Giro).
- Reflective rear decals and quick-dry padding (per Giro).
Cons
- One shell per fit. If your head sits at the edge of a range, your options are limited; over 61 cm, for example, means the XL.
- Third-party reviewers flag the fit: Treeline Review found it fits medium to large heads best, and RideReview notes a bulky side profile.
- The certification line varies by fit on Giro’s US pages; Adult and Youth show CE EN 1078 only.
- Giro’s US pages don’t list a vent count or visor details.
Fixture MIPS II vs. spending more
If you ride harder terrain or an e-MTB, see our best eMTB helmets for aggressive trail riding. For bike park and enduro days, a full-face like the one in our Fox Proframe RS review is a different category of helmet. For pricier half-shells, see our POC Tectal review and Smith Forefront 3 review.
Where to buy
- Universal Adult (54–61 cm): giro.com
- Women’s (50–57 cm): giro.com · Amazon (sold and shipped by Backcountry when checked September 30, 2026)
- XL (58–65 cm): giro.com
- Youth (50–57 cm): giro.com · Amazon (sold and shipped by Backcountry when checked September 30, 2026)
Giro listed $84.95 for each fit on September 30, 2026. Prices and stock change, so check the listing before you buy.
FAQ
Which Giro Fixture MIPS II size should I buy?
Measure your head. Per Giro’s size chart, Universal Adult covers 54–61 cm, Women’s 50–57 cm, XL 58–65 cm and Youth 50–57 cm.
Is the Giro Fixture MIPS II OK for kids?
Buy kids the Fixture MIPS II Youth (50–57 cm). The XL (58–65 cm) is on Giro’s adult size chart for bigger heads. It is not a kids’ helmet.
Does the Fixture MIPS II meet the CPSC bike helmet standard?
It depends on the fit, going by Giro’s US pages. The XL and Women’s pages say "Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older". The Universal Adult and Youth pages list CE EN 1078 and don’t show a CPSC line. Check the certification label inside the helmet.
Should I replace it after a crash?
Yes. Per Giro, replace a helmet immediately after a crash or visible damage, and every 3–5 years otherwise. Per CPSC, impact damage may not be visible. Giro offers crash replacement: contact Giro Customer Service with details and photos.
Does it have a visor?
The helmet pictured has one, and Giro sells a Fixture replacement visor as a spare part. Giro’s US product pages don’t describe the visor further.
What changed from the original Fixture MIPS?
Per Giro, the Fixture MIPS II has a revised silhouette, redesigned Mips integration and improved cooling. The first-generation Fixture MIPS no longer appears among Giro’s helmets on giro.com (checked September 30, 2026).
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