Roughly 6,607 LS2 Rapid II motorcycle helmets sold in the United States do not meet the federal safety standard they were certified against.
There is no recall. Owners have not been notified, and under the outcome the manufacturer is seeking, they never will be.
Allwin Powersports Corp., the US entity behind the LS2 brand, has asked the National Highway Traffic Safety Administration to declare the failure inconsequential to motor vehicle safety and exempt it from the legal duty to tell owners and replace the helmets. NHTSA published the petition in the Federal Register on 20 August 2026 and opened it for public comment. Comments close on 21 September 2026.
What failed
The helmets do not comply with paragraph S5.2 of FMVSS No. 218, the penetration requirement.
The test is straightforward. After the helmet is conditioned, a pointed striker is dropped onto it. The striker must not reach the surface of the headform inside.
On the LS2 Rapid II, it did. The failure occurred at the left rear of the shell, and not in a single edge case: it failed in ambient, low-temperature and high-temperature conditioning alike.
The affected helmets were manufactured between 17 July 2023 and 30 June 2025. Allwin says it has stopped selling the model and discontinued it.
The manufacturer’s case
Allwin’s petition rests on four arguments. These are the company’s positions; NHTSA has expressly stated it has not evaluated them.
It passed before. The company says the helmets were tested against DOT standards nine times across its internal programme and contract testing at ACT Labs, and passed at every location including the left rear. The failure emerged only when Southwest Research tested the helmet at NHTSA’s request.
Penetration is a rare real-world event. Allwin argues the risk of a foreign object penetrating a helmet in a motorcycle crash is extremely low, citing published studies.
Other standards don’t test for it. The petition states that ECE 22.05 and Snell M2025D do not require a penetration test, on the grounds that the real-world risk is low and that passing such a test forces helmets to be heavier and thicker.
An expert agrees. Allwin cites David R. Thom, a helmet safety and injury dynamics expert, as holding the view that the penetration test is unnecessary given how rarely this injury mechanism occurs.
Where the argument runs into trouble
The engineering point is not frivolous. Penetration resistance is genuinely contested among helmet researchers, and the trade-off Allwin describes is real: building for penetration adds mass, and a heavier helmet carries its own costs in neck loading and rider fatigue.
But every one of those arguments addresses a different question from the one on the table.
They argue that FMVSS 218 should not contain a penetration requirement. The question before NHTSA is whether these helmets meet the requirement it does contain. The case for changing a standard belongs in rulemaking, not in an exemption filing about a product already in consumers’ hands.
There is also the testing record itself. If a helmet passes nine times and fails the tenth, either the production run is inconsistent between samples or the design sits close enough to the threshold that ordinary test variation decides the outcome. Neither is a comfortable finding for head protection.
And the failure was not marginal in the way single-condition failures often are. It appeared across all three conditioning environments.
The same company recalled a different LS2 helmet in January
This is Allwin’s second FMVSS 218 problem of 2026.
In January the company recalled 3,714 LS2 Rebellion helmets in XL and 2XL, after NHTSA compliance testing found the right side of the shell failed the impact attenuation requirement. That one went through as a conventional recall.
The contrast is the point. Rebellion owners were contacted and given replacements. Rapid II owners, if the petition succeeds, will hear nothing.
How the exemption mechanism works
Petitions of this kind are an established and reasonably common feature of US vehicle safety law. Under 49 CFR Part 556, a manufacturer that has admitted a noncompliance may argue that it makes no meaningful difference to safety, and if NHTSA agrees, the notification and remedy obligations fall away.
NHTSA’s notice draws one boundary explicitly. Any decision would apply only to equipment already out of the manufacturer’s control. The prohibition on distributors and dealers selling noncompliant stock still in their hands remains in force regardless of the outcome.
The agency also stresses that publishing a petition implies nothing about its merits.
What this means for riders outside the US
Helmets sold in Europe, Türkiye and most of Asia are certified to the ECE 22 series, not to FMVSS 218.
By Allwin’s own account, ECE 22.05 contains no penetration test at all. So the performance characteristic at the centre of this dispute is one that a European-certified helmet was never assessed against.
That is not an argument that ECE helmets are less safe. ECE 22.06 tightened requirements substantially in areas FMVSS 218 does not reach, notably oblique impact and rotational acceleration, which current research treats as a dominant mechanism in brain injury.
The transferable lesson is narrower and more useful: a certification label is a statement about which tests a helmet passed, not a guarantee that it was tested against everything. Each standard embeds a judgement about which crash mechanisms matter most, and whatever falls outside that judgement goes unmeasured.
Riders rarely see that trade-off, because the label does not display it.
Have your say
Comments on the petition are open until 21 September 2026 under docket NHTSA-2026-0500 at regulations.gov. Submissions must be in English and no longer than 15 pages, with no limit on attachments.
For rider organisations, helmet manufacturers and safety bodies, this is the only window to influence the decision before it is made.
Sources
- Federal Register, Allwin Powersports Corp., Receipt of Petition for Decision of Inconsequential Noncompliance, 20 August 2026, 91 FR 53934, Docket No. NHTSA-2026-0500
- NHTSA Part 573 Safety Recall Report 26E001, LS2 Rebellion, January 2026
- 49 CFR 571.218, FMVSS No. 218, Motorcycle Helmets
- 49 CFR Part 556, Exemption for Inconsequential Defect or Noncompliance
Reported by the roadsafetynews.com editorial desk from the primary Federal Register document. Statements attributed to the manufacturer are its own submissions and, as NHTSA notes, have not been evaluated by the agency. Analysis is the editorial desk’s own.
