TestedHelmetsBell Z20 MIPS
4/5 stars
- STAR score
- 11.228Lower is safer
- Tested
- 2019
- Price when tested
- $230Not today's price
Bell Z20 MIPS vs Giro Aries Spherical
The Giro Aries Spherical scored better than the Bell Z20 MIPS in Virginia Tech's road lab tests: STAR 8.404 versus 11.228.
Both are road helmets in Virginia Tech's ratings, so their scores compare fairly. Here is how they did in the lab and what each cost when tested.
Better lab score
Giro Aries Spherical
5/5 stars
- STAR score
- 8.404Lower is safer
- Tested
- 2023
- Price when tested
- $300Not today's price
The verdict
The Giro Aries Spherical scored 8.404 and the Bell Z20 MIPS scored 11.228. That gives the Giro Aries Spherical about a 25% better score in Virginia Tech's lab tests.
The Giro Aries Spherical earned 5 stars and the Bell Z20 MIPS earned 4.
At testing, the Giro Aries Spherical cost $70 more ($300 against $230).
Virginia Tech tested these in 2019 and 2023. Check that the one you buy is the version that was tested.
Is the better lab score worth it?
Worth it if the budget allows. A lab score about 25% better, plus 5 stars against 4, is a real gap for about $70 more.
Prices are what each helmet cost when Virginia Tech tested it. Check today's price, the exact model and the fit before you buy. Source: Virginia Tech Helmet Lab bicycle helmet ratings.
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