7Rank 07 of 10 · Bike Helmets
Giro Aries Spherical
A 265 g road helmet with Giro's ball-and-socket Spherical design powered by Mips. Virginia Tech scores it 8.40 with five stars; Giro's page still advertises a number-one ranking it no longer holds.
7.3BPR score
- €320Price
- 8.40 — 5 stars (Virginia Tech, rank 13 of 311)Virginia Tech STAR score and stars
- 7 of 10in Bike Helmets
- 7.3BPR score 0–10
Review
What this product is
Written after the analysis, from the same sources the score is built on: the manufacturer's documentation, available studies and verified owner feedback.
The Aries Spherical scores 8.40 with five stars at Virginia Tech, rank 13 of 311 on the list we opened. Giro's product page still carries the line 'Virginia Tech #1 ranking'. That was accurate at some point, but twelve helmets now score lower, a reminder to check the laboratory's own list rather than the box.
The datasheet is good: 265 g in size M for the CE version, CE EN 1078, 21 vents, two-density EPS and three adult sizes from 52 to 62.5 cm on the page. The description on the same page says 270 g, a small inconsistency. Spherical Technology places the Mips slip plane between two foam liners, so no plastic layer sits against the head.
Folksam has not tested the Aries; the Giro Aether MIPS was a 'Bra val' helmet in 2019 and the Helios Spherical got grade 3 in 2021, which says nothing certain about this model. Giro's Irish shop lists €319.95, cut to €207.97 on some colours, while new colours cost €329.99. A helmet for road riders who put ventilation and low weight first and can find it discounted.
Technical data
Specification
Figures from the manufacturer's documentation, verified against available outside sources. Values we could not confirm are marked as declared.
- Virginia Tech STAR score
- 8.40
- Virginia Tech stars
- 5 of 5
- Virginia Tech rank
- 13 of 311
- Folksam grade
- Not tested
- Rotational system
- Spherical Technology powered by Mips
- Weight (manufacturer)
- 265 g (size M, CE)
- Sizes
- S 52–55.5 cm, M 55.5–59 cm, L 59–62.5 cm
- Vents
- 21
- Certification
- CE EN 1078
- Fit system
- Roc Loc 5+ Air
- Integrated light
- No (reflective details)
- Owner rating
- 5/5 (1 review, bike-components.de)
Component scores
Where the score
comes from.
Four components, equal weight, each on a 0–10 scale and each resting on a named source. The overall score is their mean — the full procedure is in the methodology.
What we liked
- Virginia Tech STAR score 8.40, five stars
- 265 g in size M (CE version), per Giro
- CE EN 1078 stated; 21 vents
- Mips slip plane sits between two foam liners
- Seen at €207.97 on giro.com and from €248.99 at bike-components.de
Worth knowing
- €319.95 list price; new colours €329.99
- '#1 ranking' claim is out of date: now rank 13
- No Folksam, ADAC or Warentest result for this model
- Page gives both 265 g and 270 g for size M
Comparison
How it compares
within the category
All values come from the same analysis and are comparable only within the category Bike Helmets.
| Product | Score | Virginia Tech STAR score and stars | Price |
|---|---|---|---|
| Align IITop score | 8.7 | 9.55 — 5 stars (Virginia Tech, rank 40 of 311) | €55 |
| Aries SphericalThis product | 7.3 | 8.40 — 5 stars (Virginia Tech, rank 13 of 311) | €320 |
| Category average10 products analysed | 7.5 | — | — |
FAQ
Frequently asked questions
Is the Giro Aries Spherical number one at Virginia Tech?
Not any more. On the list we opened in October 2026 it scores 8.40 with five stars and ranks 13 of 311 helmets.
How heavy is the Giro Aries Spherical?
Giro's specification gives 265 g for size M in the CE version; the description on the same page says 270 g.
From the same ranking
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The same protocol, the same key parameter, the same set of sources.
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