If you want the short answer: the single best-scoring bicycle helmet the Virginia Tech Helmet Lab has ever tested is the PIKIO Si OBLIK (STAR score 4.61, $379 at test time), and the best score you can get for under $100 is the P2R A20 MIPS at $55 (STAR 8.14 — a 5-star helmet that outscores hundreds of pricier lids). The longer answer is worth reading, because the way VT arrives at those numbers is the only public, independent ranking of how bike helmets actually perform — and it repeatedly shows cheap helmets beating expensive ones.
Everything below comes from VT’s own published test data for all 304 helmets in its bicycle registry, which we keep as a sortable data table.
How the STAR test works — and why lower is better
Every helmet legally sold in the US already passes the Consumer Product Safety Commission’s standard (16 CFR Part 1203). But CPSC certification is a pass/fail floor: it confirms a helmet won’t fail catastrophically in a basic linear impact, and nothing more. An $8 helmet and a $650 helmet carry the same sticker. It also wasn’t designed to measure rotational head motion — a major driver of concussion risk.
The Virginia Tech Helmet Lab’s STAR protocol goes further. Each helmet takes a series of drop-tower impacts across multiple head locations and speeds, with sensors recording both linear and rotational acceleration. Those readings feed a concussion-risk model weighted by how often impacts of each severity occur in real-world cycling crashes. The output is a single STAR score: an estimate of the number of concussions a rider would be expected to sustain across that battery of impacts.
Because it’s a risk estimate, lower is better. A STAR score of 8 means roughly half the predicted concussion risk of a score of 16. VT bins the scores into a familiar 1–5 star rating — 54 of the 304 tested helmets earn 5 stars — but the raw score is where the real differentiation lives: within the 5-star bin, scores range from 4.61 to over 14.
The safest helmets overall
Sorted by STAR score across all 304 tested helmets, the top of the table looks like this (prices are VT’s listed test-time price):
- PIKIO Si OBLIK — 4.61, Road, $379. The best score VT has recorded for a bicycle helmet, by a clear margin.
- Canyon Deflectr RLS — 6.82, Mountain, $160
- HEXR Miden RLS — 6.93, Urban, $150
- POC Cularis — 7.10, Mountain, $240
- Fox Racing Speedframe RS — 7.23, Mountain, $279
By riding style, the best-tested helmets are the PIKIO Si OBLIK (road, 4.61), Canyon Deflectr RLS (mountain, 6.82), HEXR Miden RLS (urban, 6.93), Sweet Protection Fixer Carbon 2Vi MIPS (full-face, 7.66), and Specialized Align II (multi-sport, 9.55). Styles aren’t directly comparable — VT tests each helmet against impacts typical of its category — so pick your style first, then sort by score.
The under-$100 story is the interesting one
Here’s what makes STAR data genuinely useful: price and protection barely correlate. Eight of VT’s 54 five-star helmets cost less than $100 at test time. The best of the 129 tested helmets under $100:
- P2R A20 MIPS — 8.14, Road, $55. Tenth-best score in the entire 304-helmet registry, at one-seventh the price of the helmet in first.
- Giant Rev Comp MIPS — 9.13, Road, $65
- Specialized Align II — 9.55, Multi-sport, $50
- Specialized Chamonix 3 — 9.64, Road, $80
- Endura Hummvee MIPS — 9.65, Mountain, $90
- Lazer Tonic MIPS — 9.85, Road, $80
- MET Downtown MIPS and MET Miles MIPS — 10.01, Multi-sport, $80
Drop to $50 or less and the Specialized Align II is the only 5-star option, with the Giant Relay MIPS and Liv Relay MIPS (both 12.48, $50) the best of the 4-star tier. Note that most of these budget standouts carry MIPS or an equivalent rotational liner — the tech that addresses exactly the angular motion CPSC ignores — which is a big part of how a $55 helmet posts an elite score.
The flip side holds too: spending more guarantees nothing. Plenty of $200-plus helmets sit in the middle of the table below $50 budget picks. The score, not the price tag or the marketing, is the signal.
Caveats worth knowing
- Prices are VT’s test-time list prices, not current street prices. Helmets get discounted, discontinued, and revised; treat the price column as a rough tier, and check availability yourself.
- A STAR score is a relative ranking, not a promise. No helmet prevents all concussions; fit and correct positioning matter enormously to real-world protection.
- Rotational-tech labels in our table are derived from model names (e.g., “MIPS” in the product name), not independently verified against spec sheets.
- VT adds new helmets over time, so the registry keeps growing — the full sortable table reflects the data as of our last refresh.
For our editorial picks — where we weigh score against fit, ventilation, and value — see our Top 10 bike helmets by safety rating, and for a deeper walkthrough of the methodology itself, our guide to what the STAR score actually means.