LS2 FF817 Challenger II Helmet – Solid White
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Size chart LS2 FF817
| 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.
- Worldwide shipping
- 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.
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Plain gloss white: the most visible colour in daylight, the coolest in summer sun, and the one that never looks dated.
An HPFC shell in three sizes
The shell is HPFC — LS2's high-performance fibreglass composite. At 1500 grams it is light for a touring full-face carrying a drop-down sun visor, and fibreglass absorbs impact energy in a way that suits long days rather than lap times.
The range spans XXS to XXXL across three shells. A size S therefore sits closer to the head than it would on a one-shell design, where every size shares the same outer dimensions.
Carbon wäre leichter, aber nicht unbedingt besser: Fiberglas verformt sich beim Aufprall etwas mehr und baut die Energie dabei über einen längeren Weg ab. Für einen Helm, der Tagesetappen abspult statt Rundenzeiten zu jagen, ist das die passendere Auslegung — und der Preisunterschied landet dort, wo er mehr bringt.
About the Solid White finish
A clean gloss white shell with no graphic. Beyond the look there is a practical case — light helmets absorb measurably less heat sitting in traffic, and white reads clearly against nearly any background. It shows dirt honestly, which on something you should be inspecting regularly is arguably a feature.
Airflow from the top down
The system is a crown intake feeding channelled EPS, with rear exhausts drawing the air out. Routing the ducts through the liner foam is what gets the airflow to your head instead of stalling it under the shell.
Der Verzicht auf eine Kinnzufuhr ist ein Tourenkompromiss: weniger Zugluft im Gesicht, weniger Geräusch, dafür läuft die Beschlagfreiheit über den Pinlock statt über den Luftstrom. Bei längeren Fahrten ist das angenehmer, im Stop-and-Go bei Regen weniger.
Seeing out
A wide, hardcoated visor with a double-injection seal and a button lock. The Pinlock 120XLT MaxVision anti-fog insert is included rather than sold separately.
A tinted sun visor is built in, deployed by a slider and stowed completely inside the shell. It comes out for cleaning without tools, which matters more than it sounds after a summer of insects.
Max Vision heißt hier nicht nur breit, sondern auch hoch: Der obere Rand liegt weit genug oben, dass man in Kurvenlage nicht über die Kante schaut. Wer schon einmal in Schräglage gegen den Visierrahmen geblickt hat, weiß, wie sehr das stört.
Holding on, and letting go
A reinforced chin strap with a micrometric metal buckle, emergency cheek-pad release and a metal safety plaque on the shell. The plaque matters at borders: it is the homologation proof in physical form.
Die mikrometrische Ratsche ist der praktische Verschluss für Vielfahrer: einmal auf Länge gebracht, danach ein Klick pro Fahrt. Anders als beim Doppel-D lässt sie sich auch mit Handschuhen bedienen, ohne abzusteigen.
The bit you actually touch
A breathable COOLMAX liner that wicks and dries quickly, treated to be antibacterial and hypoallergenic. The chin curtain attaches magnetically — no poppers to fight with cold hands.
COOLMAX ist kein Marketingwort, sondern eine Faserkonstruktion: vierkantige Hohlfasern transportieren Feuchtigkeit über Kapillarwirkung nach außen, wo sie schneller verdunstet. Praktisch heißt das, dass die Polster nach einer Schwitzetappe eher klamm als nass sind — und über Nacht trocken werden.
What it is built for
Ausgelegt ist er auf die Strecke zwischen Stadtverkehr und Autobahn: leise genug für Etappen am Stück, mit Sonnenblende für tiefstehende Sonne und Pinlock für kalte Morgen. Die Bauform ist bewusst nicht auf Rennstreckenhaltung optimiert — im aufrechten Sitzen liegt er ruhiger als ein Sporthelm.
In the box
- LS2 FF817 Challenger II helmet — Solid White
- Elastic carrying bag
- Pinlock 120XLT MaxVision anti-fog insert
- Reflective stickers
Specification
- Shell — HPFC high-performance fibreglass composite, three shell sizes
- Weight — 1500 g (±50 g)
- Sizes — XXS to XXXL (eight sizes)
- Homologation — ECE 22.06
- Retention — micrometric metal buckle, reinforced strap, emergency release, metal safety plaque
- Visor — Max Vision aperture, scratch-resistant, UV-stable, double-injection seal, button lock, Pinlock 120XLT MaxVision supplied
- Sun visor — integrated, tinted, tool-free removal system
- Ventilation — top intakes, rear extractors, ducted EPS, breath deflector
- Liner — COOLMAX, antibacterial, hypoallergenic, removable and washable
- Chin curtain — magnetic
- Intercom — prepared for the current LS2 Bluetooth system
- Finish — Solid white, gloss
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Built-in sun visor
Included
LS2 Pinlock 120XLT MaxVision Insert DKS611
Included free
helmet only
Your helmet is always included · anything marked Included already comes with it · pick your size in the buy box above
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LS2 FF817 Challenger II Helmet – Solid White

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