MT Thunder
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SHARP safety rating
4/5
SHARP doesn't give a test date for this helmet (UN ECE REG 22.05). Later versions with the same name may differ: check the label against SHARP’s page.
Impact zones
| Speed | Front | Top | Rear | Left | Right |
|---|---|---|---|---|---|
| 8.5 m/s | 5 out of 5 (green) | 5 out of 5 (green) | 5 out of 5 (green) | 3 out of 5 (orange) | 3 out of 5 (orange) |
In SHARP’s words, these show “how this model of helmet performed at each of the five impact locations on the helmet during the linear impact tests against the flat anvil”. SHARP's page for this helmet shows the high-speed (8.5 m/s) results only, as its older ratings do.
What the zone scores mean
SHARP grades each test point in six colours from “Very good” to “Poor”, set by the peak acceleration it measured (the forces passed to the head), with boundaries linked to the risk of injury found in the COST 327 crash research. We show its colours with the score from SHARP’s key, 5 (very good) to 0 (poor):
- 5 out of 5 (green)Green: Peak acceleration up to 275g (the ECE 22.05 test limit at 7.5 m/s)
- 4 out of 5 (yellow)Yellow: Up to 300g (the BS 6658:1985 limit at 7.5 m/s, which SHARP uses as the maximum for a 5-star rating)
- 3 out of 5 (orange)Orange: Up to 400g
- 2 out of 5 (brown)Brown: Up to 420g
- 1 out of 5 (red)Red: Up to 500g
- 0 out of 5 (black)Black: Over 500g
Source: SHARP testing, Impact Zone diagrams (checked 9 Oct 2026).
How SHARP tests: each model gets 32 impact tests (30 linear, 2 oblique) on at least seven helmets in a range of sizes, at 6, 7.5 and 8.5 m/s, against flat and kerb-shaped surfaces; the results are weighted by real accident data to give the star rating, with 5 stars the highest. SHARP buys the helmets it tests from UK retailers. SHARP testing.
Source: SHARP (Department for Transport), MT Thunder page, checked 9 Oct 2026. SHARP page published 13 Feb 2015.
Safety explained: UK helmet law, ECE 22.05 and 22.06, and what SHARP tests.
Specs
From SHARP’s page for this helmet unless stated.
| Helmet type | Full faceSource: SHARP (Department for Transport), checked 9 Oct 2026 |
|---|---|
| Standard tested to | UN ECE REG 22.05Source: SHARP (Department for Transport), checked 9 Oct 2026 |
| SHARP test date | Unknown |
| Weight | 1.45 kgSource: SHARP (Department for Transport), checked 9 Oct 2026 |
| Sizes | XS, S, M, L, XL, XXLSource: SHARP (Department for Transport), checked 9 Oct 2026 |
| Shell sizes | Unknown |
| Shell material | PolycarbonateSource: SHARP (Department for Transport), checked 9 Oct 2026 |
| Retention system | Micrometric adjustmentSource: SHARP (Department for Transport), checked 9 Oct 2026 |
| RRP listed by SHARPAs shown on SHARP's page; may date from when it was tested | £49.99Source: SHARP (Department for Transport), checked 9 Oct 2026 |
| FeaturesSHARP notes these are details provided by the manufacturer | Anti scratch visor, Multiple shells, Multipoint Ventilation, Quick release visor mechanism, Removable cheek pads, Removable LinerSource: SHARP (Department for Transport), details provided by the manufacturer, checked 9 Oct 2026 |
| Manufacturer's page (as listed by SHARP) | Unknown |
| Head shapeAs the brand states it | Unknown |
Your size
| Size | Head circumference |
|---|---|
| XS | 53–54 cm |
| S | 55–56 cm |
| M | 57–58 cm |
| L | 59–60 cm |
| XL | 61–62 cm |
| 2XL | 63–64 cm |
| 3XL | 65–66 cm |
MT advises the larger size if you're between two.
Source: MT Helmets: size chart (product page 'What's my size?'), checked 9 Oct 2026Intercoms that fit
No intercom maker or MT lists a fit for this helmet in the data we've checked so far.
Listed only where a maker publishes the fit (the intercom maker’s fit list, or the helmet maker’s own part codes and partnerships). We never guess a fit: check with the maker or retailer before you buy.
Visors and inserts that fit
We haven't added MT's visor codes for this helmet yet.
Listed only where a maker publishes the fit (the intercom maker’s fit list, or the helmet maker’s own part codes and partnerships). We never guess a fit: check with the maker or retailer before you buy.
Similar helmets
The same type of helmet with a similar SHARP rating and price, including others from the same brand. Picked from SHARP’s figures and live prices; never paid for.
Safety ratings and test results: SHARP, Department for Transport. Contains public sector information licensed under the Open Government Licence v3.0. Helmet Scout isn’t connected to or endorsed by SHARP or the Department for Transport.