LS2 FF818 Storm III Helmet – Sporty Grey/Purple
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Size chart LS2 FF818
| Size | Head circumference (cm) | Head circumference (inch) |
|---|---|---|
| XXS | 51–52 cm | 20.1–20.5 in |
| XS | 53–54 cm | 20.9–21.3 in |
| S | 55–56 cm | 21.7–22.0 in |
| M | 57–58 cm | 22.4–22.8 in |
| L | 59–60 cm | 23.2–23.6 in |
| XL | 61–62 cm | 24.0–24.4 in |
| XXL | 63–64 cm | 24.8–25.2 in |
| 3XL | 65–66 cm | 25.6–26.0 in |

How to measure your helmet size correctly: To find the right helmet size, measure your head circumference with a flexible tape measure.
It is important that the tape measure runs around the widest part of the head – only then will you get a correct result.
Place the tape measure at the front, about 1–2 cm above the eyebrows, and run it along the sides above the ears.
At the back, the tape must run over the largest part of the back of the head (not too low on the neck). The tape may run slightly at an angle – what matters is that it sits all the way around the largest points of the head.
Make sure the tape measure sits snugly but does not dig in. Measure 2–3 times for the most accurate result. You can then compare the measured value in centimetres (cm) with our size chart.
Tips for an accurate result
- Keep hair flat (e.g. do not measure over a voluminous hairstyle)
- Keep the tape horizontal, i.e. along the largest circumference
- Do not measure too loosely
- For values between two sizes:
→ usually choose the larger size (depending on helmet model / fit)
Important note on fit
The right helmet should fit firmly without causing uncomfortable pressure points.
A new helmet may feel a little tighter at first, as the inner lining adapts slightly over time.
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- Genuine parts & verified quality
- Personal email support
- 14-day returns — in stock ships within 24h
Shipping & Returns
We ship with DHL and FedEx — express on request. If an item is in stock, express delivery can often go out within 1 business day. Standard delivery takes about 2–5 business days domestically and usually around a week worldwide. Please check the available shipping options and delivery times in your cart, as we offer several carriers depending on the country.
Returns must be registered in advance by email and are possible in line with our cancellation policy (14-day return request + 14-day return window after approval). Please note: unregistered returns are not accepted. You'll find all details on conditions, exceptions and refunds in our cancellation policy.
Payment & Security
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The same Sporty geometry in purple over matt grey — a colour pairing almost nobody else offers on a touring helmet, and the reason this one stands out in a row of black and white ones.
Everything that is usually an extra
The Storm III is the best-equipped of the three LS2 full-face helmets in this price bracket, and the equipment is the reason to choose it. Pinlock 70 MaxVision supplied, not offered. An internal sun visor that deploys with a slider and lifts out by hand. A magnetic chin curtain that clicks into place rather than needing to be threaded.
About the Sporty Grey/Purple finish
Purple is difficult to get right on a large curved surface: too bright and it turns theatrical, too dark and it reads as black. Here it sits over a mid grey with pink flashing through the transitions, and the matt coat keeps it deep rather than glossy-sweet. Matt also means a matt-safe cleaner rather than polish, which is the usual price of a finish this restrained.
A large top intake, and what it feeds
Two intakes, ducted polystyrene, rear extractors, breath deflector — and the intakes are large. That is the single specification LS2 leads with on this helmet, and on a shell carrying a sun visor it matters more than usual: a sun-visor housing takes up space that would otherwise be liner, so the air has to work harder to reach your head.
The release you hope never to need
The chin strap closes with a ratchet buckle on reinforced webbing, and the cheek pads carry an emergency release system — pull tabs that let a first responder draw the padding clear so the helmet can come off without moving your neck. It is a feature you will never use yourself, which is rather the point of it.
Two screens, one shell
You look out through a Max Vision aperture — LS2's widest cut — with a scratch-resistant hardcoat and a twin-injection seal that keeps rain out of the gap. A button lock stops the visor lifting at motorway speed. Seven replacement screens are available, from clear to iridium.
What the ECE 22.06 plaque actually means
Worth a paragraph, because most shops leave it as a line in a table. ECE 22.06 tests up to eighteen impact points where 22.05 tested five, uses more than one impact speed, and — the substantive change — measures rotational acceleration through an oblique drop onto an angled, abrasive anvil.
Straight-line impact was always the easier problem. Rotation is what a real crash usually delivers, and it is what damages the brain at energies a shell survives comfortably. The standard also brings the visor and every fitted accessory into the test, and has been mandatory for new helmets sold in the EU since January 2024.
Fit and shell sizes
3 shell sizes cover XXS to 3XL. On a helmet built around a single shell, the smallest size carries a mid-size shell's worth of polystyrene: it looks oversized, it weighs more than it should, and the EPS is thicker than the size needs. Splitting the range across 3 tools avoids that at both ends.
The bit you actually touch
The interior is the part you actually touch, and here it is thick, removable, washable, antibacterial and hypoallergenic. Add a magnetic chin curtain and prepared speaker recesses and the helmet is ready for long days rather than short commutes.
On noise
Nobody publishes a decibel figure for this helmet and we are not going to invent one. What can be said is where the noise comes from: turbulence at the base of the shell, air entering under the chin bar, and open vents. The chin curtain here is magnetic, which is not a gimmick: a popper-fastened curtain gets left off after the second cleaning, and a curtain that is not fitted does nothing. The sun-visor housing does widen the shell slightly at the temples compared with a helmet without one, which is a small aerodynamic cost for a large practical gain.
The rest is not the helmet's doing. A tall screen that pushes dirty air straight at your head will make any lid loud, and a naked bike at 130 km/h will beat the best-sealed helmet on the market. Earplugs remain the cheapest upgrade in motorcycling.
1600 grams, and what it buys
1600 grams is the heaviest figure in our entire LS2 range, and it is worth being honest about why: a drop-down sun visor, its slider mechanism and housing, a Pinlock-equipped Max Vision visor and an emergency-release liner all weigh something. This is the trade the Storm III makes.
1600 grams, measured the way manufacturers measure it: a mid-size shell without accessories. It sounds abstract until you convert it into load. A head weighs roughly five kilos; the helmet adds around a third of that, and every bump in the road multiplies the lot through your neck. The difference between 1600 g and the 1280 g of the FF805 Thunder is not noticeable in the first hour and is very noticeable in the fifth.
For context inside this range: just 5 helmets we sell are lighter, and every one of them costs more.
Where it sits in our LS2 range
Eight LS2 full-face models are listed here and they form a ladder rather than a wall of choices. The Storm III is the equipment high point of the affordable half.
| Model | Shell | Weight | Sun visor | Pinlock | RRP |
|---|---|---|---|---|---|
| FF808 Stream II | KPA | 1550 g | yes | prepared | from 129 € |
| FF818 Storm III | KPA | 1600 g | yes | included | from 199 € |
| FF811 Vector II | HPFC | 1500 g | yes | included | from 259 € |
| FF817 Challenger II | HPFC | 1500 g | yes | included | from 329 € |
When something wears out
A helmet is not a sealed unit and the parts that wear are not the shell. Interiors compress, visors scratch, vent covers snap off in a car park. We stock the Storm III liner in every size, seven replacement visors from clear to iridium, the tinted sun visor, plus the chin curtain, chin bar trim, nose guard, ratchet mechanism and vent covers in six finishes.
That matters for how long the helmet lasts you. A liner that has taken a summer of sweat is the usual reason a helmet that once fitted starts to move on your head — and replacing it costs a fraction of replacing the helmet. The full parts list is in the FF818 Storm III Kit.
In the box
- LS2 FF818 Storm III helmet — Sporty Grey/Purple
- Carrying bag
- Pinlock® 70 MaxVision™ anti-fog insert
- Reflective stickers
Specification
- Shell — KPA, three shell sizes (2XS–S / M–L / XL–3XL)
- Weight — 1600 g (±50 g)
- Sizes — XXS to 3XL (eight sizes)
- Homologation — ECE 22.06
- Retention — ratchet buckle, reinforced chin strap, emergency cheek-pad release
- Visor — Max Vision aperture, scratch-resistant, UV-stable, double-injection seal, button lock, quick-release system
- Anti-fog — Pinlock® 70 MaxVision™ supplied
- Sun visor — integrated, tinted, tool-free removal system
- Ventilation — large top intake, chin intake, rear exhausts (all with transparent sections), channelled EPS, breath deflector
- Liner — maximum-comfort interior, antibacterial, hypoallergenic, breathable, removable and washable
- Chin curtain — magnetic
- Intercom — prepared for the current LS2 Bluetooth system
- Finish — Sporty graphic, matt
| Model | FF818 Storm III |
|---|---|
| SKU | 168180407 |
| Colour / Finish | Sporty Grey/Purple — Sporty graphic, matt |
| Homologation | ECE 22.06 |
| Helmet Type | Full-Face |
| Shell | KPA, three shell sizes (2XS–S / M–L / XL–3XL) |
| Weight | 1600 g (±50 g) |
| Sizes | XXS to 3XL (eight sizes) |
| Visor | Max Vision aperture, scratch-resistant, UV-stable, double-injection seal, button lock, quick-release system |
| Anti-fog | Pinlock® 70 MaxVision™ supplied |
Fitment data coming soon.
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Built-in sun visor
Included
LS2 Pinlock 70 MaxVision Insert DKS147
Included free
helmet only
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// LS2
LS2 FF818 Storm III Helmet – Sporty Grey/Purple

Tech specs
- Model
- FF818 Storm III
- SKU
- 168180407
- Colour / Finish
- Sporty Grey/Purple — Sporty graphic, matt
- Homologation
- ECE 22.06
- Helmet Type
- Full-Face
- Shell
- KPA, three shell sizes (2XS–S / M–L / XL–3XL)
- Weight
- 1600 g (±50 g)
- Sizes
- XXS to 3XL (eight sizes)
- Visor
- Max Vision aperture, scratch-resistant, UV-stable, double-injection seal, button lock, quick-release system
- Anti-fog
- Pinlock® 70 MaxVision™ supplied
// Support
Frequently asked questions
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