The Spectrum layout in black, titanium and blue — the same geometry as the red version in a palette chosen for restraint rather than for contrast, and the more grown-up of the two.

Four stars from SHARP — and this is the helmet they tested

🔵 What the star rating does not capture: the chin-bar lock rate. SHARP publishes it separately, and for the Advant X it is 63 % — the proportion of impacts in which the bar remained fully locked.

🟢 The P/J homologation is why that is a manageable number rather than an alarming one.

A flip-up with P/J dual homologation

The bar folds to the rear rather than sitting proud, which also means the helmet stows flat and does not rock on a table when you set it down open.

🟢 More importantly it stays out of the wind at speed, which is the difference between an open position you use and one you do not.

HPFC composite, multi-density EPS — and only two shell sizes

Two shells, seven sizes, one specification: every finish on this page uses the identical HPFC shell, the identical liner and the identical equipment, plain or graphic.

🔵 The difference between the two prices is paint.

About the Spectrum black, titanium and blue graphic

Swapping red for blue and white for titanium narrows the value range of the whole graphic, which changes what it does at distance: the red version reads as a decorated helmet from fifty metres, this one reads as a dark helmet with structure in it. Whether that is better depends entirely on what you want from the object. What it gains is durability of appearance — titanium and navy are the two values at which road film shows least, and a touring helmet accumulates a great deal of it. 🔵 What it gives up is some conspicuity: the white in the red version is doing real work that titanium does only partially. Both cost the same and both are the same helmet underneath, with the same SHARP result and the same equipment. If your riding is mostly daylight and dry, this is the more considered-looking of the two. Worth comparing against the Metryk finish at the same price, which is also built around titanium and also avoids a second colour doing the shouting. Metryk is fully tonal and the more restrained of the two; this keeps a blue element that gives the eye something to fix on. Both hide road film about as well as anything here, and both are matt-adjacent in character rather than showy.

Twin Visor, Pinlock 120 and a tinted spare

An anti-fog insert works mechanically: it sits slightly proud of the visor with a sealed pocket of air between the two, holding the inner surface above dew point.

🔵 Sprays and coatings need reapplying and fail exactly when humidity is highest. The Pinlock 120 XLT is supplied here.

Chin and crown intakes, channelled EPS

The vent covers are inside the ECE 22.06 approval, because the current standard tests a helmet with everything fitted that will be sold on it. They open and close by hand and work in gloves.

🔵 No independent airflow figure exists for this model.

Metal buckle and the Emergency Release System

Emergency responders are trained to look for cheek-pad release tabs. On the Advant X they are there, at the base of each pad, and they are the reason a bulky modular helmet can come off cleanly.

🔵 Retention is a micrometric metal buckle.

Lining, comfort — and the X-Static this version does not have

🔵 On a modular helmet the lining takes more handling than on a full-face, because the chin bar goes up and down and the padding around the jaw moves with it.

Laser-cut foam holds up to that better than die-cut does, and the whole interior is replaceable.

Where it sits in LS2's range

A modular is heavier than a full-face and heavier than a jet, and buys versatility with that weight. On a touring helmet that is usually the right purchase, and on a commuter it often is not.

🔵 The Advant X weighs 1600 g and is homologated P/J in both positions.

Care and replacement parts

Cheek pads in other thicknesses are the most useful spare available and the least often bought. A fit that has loosened over two seasons is usually corrected with thicker pads rather than a new helmet.

🔵 Crown pad, cheek pads and the complete lining are all listed separately.

In the box

• LS2 FF901 Advant X helmet — Spectrum, Black, titanium and blue (HPFC composite shell)
• Clear main visor, fitted, with tool-free quick release
• Pinlock® 120 MaxVision™ XLT anti-fog insert
• A complete second visor in a tint — 🔵 daylight use only in most European jurisdictions
• Integrated drop-down sun visor, fitted
• Breath deflector, fitted
• 🔵 No intercom — the helmet is prepared for a Bluetooth system, which is a separate purchase

Size guide

Measure at the widest part of the skull — usually just above the eyebrows at the front and around the bulge at the back, not the forehead alone.

🔵 Compare against the chart below and start there.

Specification

• Model — LS2 FF901 Advant X (HPFC)
• Part number — 569012108
• Colour — Spectrum — Black, titanium and blue
• Homologation — ECE 22.06, P/J dual homologation — approved closed and open
• 🟢 Safety rating — SHARP 4 stars of 5, July 2024, ECE 22.06. Max in every zone at 6.0 and 7.5 m/s; at 8.5 m/s crown/front/rear 5, sides 3. 🔵 chin bar fully locked in 63 % of impacts
• 🔑 Which helmet the rating belongs to — SHARP recorded composite fibre, 1.6 kg = this HPFC version. Not the Advant X Carbon (6K, 1550 g), which we list unrated
• Helmet type — Flip-up touring — chin bar rotates 180° to the rear
• Shell — HPFC composite. 🔵 Two shell sizes only (XS–S–M–L / XL–2XL–3XL) — coarser than the three of LS2's FF808/FF817/FF820
• Impact liner — multi-density EPS with moulded ventilation channels
• Weight — approx. 1600 g (±50 g)
• Sizes — XS to 3XL (seven sizes), no XXS. Prepared for Bluetooth intercom; no system supplied
• Optics — Twin Visor System — main visor plus retracting sun visor
• 🟢 Included — Pinlock® 120 MaxVision™ XLT AND a complete tinted second visor, plus a breath deflector
• 🔴 Tinted visor — daylight only — most European jurisdictions bar tinted visors at night
• Ventilation — chin and crown intakes, channelled multi-density EPS, rear exhaust port. 🔵 assessed from construction; no independent measurement exists
• 🔴 Wind noise — left unrated — no measurement published; SHARP measures impact, not acoustics
• Retention — micrometric metal buckle
• Emergency access — Emergency Release System — tabs let responders withdraw the cheek pads first
• Interior — removable, washable, breathable, hypoallergenic; laser-cut foam. 🔵 No X-Static® — LS2 lists it only for the Advant X Carbon
• 🔴 FIM homologation — none — a road helmet; no modular is FIM-eligible
• Serviceability — both visors, sun visor mechanism, cheek pads (several thicknesses), lining, vent covers, breath deflector
• Replacement guidance — after about five years, and immediately after any impact — composite can look undamaged over crushed EPS

• 1× helmet
• Carrying backpack
• Tinted visor
• Pinlock® 120 MaxVision™ XLT anti-fog insert (DKS433)
• Reflective stickers