Hadal is named after the deepest zone of the ocean and uses the palette to match — deep green and dark blue over exposed 3K weave. It is one of the two top finishes in the range and the more unusual of them.

A streetfighter shell with a spoiler that works

Independent evidence for a helmet sold on design is worth more than usual, and this one has two sources. A scored road test rated it 3.9/5 overall — noise 4/5, ventilation 4/5, comfort 4/5, weight 2/5 — and MOTORCYCLE NEWS gave it 4/5.

🔵 Neither is a laboratory safety rating. SHARP has not tested the X.WST3.

About the Hadal Carbon graphic

Graphics that incorporate exposed weave are the only ones where the construction is part of the appearance, and Hadal uses that deliberately: the carbon is one of the colours rather than a background the design sits on. Green and dark blue against dark weave keeps the whole thing in a narrow value range, so the helmet reads as a single deep object that resolves into a design up close. That is a considerably more sophisticated effect than a high-contrast livery. 🔵 The trade is conspicuity, which is low, and repairability — a scratch into exposed weave is permanent.

The X-PRO Carbon 3K shell

🔵 What carbon does not do is make a helmet safer by itself. The approvals, the EPS structure and the X-Foam bumper are identical between the two shells here. What it does is take off 75 g on a helmet whose weight was independently scored 2/5.

The construction is X-PRO Carbon 3K, 1600 g, in three outer shell sizes, made in Portugal.

Anti-Vibration EPS — two shells and a rubber layer

🔵 A structural comfort feature is harder to undo than a padding one. The rubber interlayer works whatever liner you fit and however the vents are set, which is not true of most comfort claims on a helmet.

Its purpose: damping the vibration that high-speed air turbulence transmits into the shell.

Recoil visor, sun visor and the spare in the bag

The optical package on this helmet is more complete than the price suggests: Recoil visor with twin-lip seal, Pinlock 70 MaxVision fitted (DKS553), a second clear visor, a visor bag, and an internal sun visor 18 % larger than before.

🔵 Most helmets in this bracket supply one visor and sell the anti-fog lens separately.

Six intakes, two chambers — and a 4/5 measurement

Airflow only happens if there is somewhere for the air to go, and two exhausts against six intakes only works because the internal chambers keep the path open. That is the design argument, and the measured result supports it: 4/5 for ventilation.

🔵 It is a road-speed system. In stationary traffic no helmet ventilates well.

How quiet it actually is

Independent testing scored noise 4/5, ventilation 4/5 and comfort 4/5, with an overall verdict of 3.9/5. The one weak mark was weight, at 2/5.

🔵 The measured noise figure behind that score was 100 dB average — genuinely good for a shell with a spoiler and six intakes.

Interior, retention and fit

🔵 Fit is the specification that matters most and the one no description settles for you. A loose helmet moves under braking and rotates in a crash; a tight one produces a headache at forty minutes.

Try it on and keep it on for ten minutes. It should not be possible to rotate the helmet on your head by hand. Independent testing scored comfort 4/5.

1600 grams, and the rest of the honest list

Weight is the one specification this helmet loses on, and carbon narrows the gap rather than closing it. 1600 g against the composite's 1675 g — still scored 2 out of 5 in independent testing.

🔵 Everything else in the same test scored 4/5, and the overall verdict was 3.9/5.

Comms, camera and spare parts

The Pinlock lens is a consumable — the silicone seal loses grip and the surface clouds after a few seasons, and a fogged Pinlock is worse than none at all. The code for this helmet is DKS553.

🔵 It is specific to the X.WST3 and does not interchange with the lenses used on Nexx's adventure helmets.

In the box

• Nexx X.WST3 helmet — Hadal Carbon (X-PRO Carbon 3K shell)
• Clear visor with Pinlock® 70 MaxVision anti-fog lens fitted
• Second clear visor and a visor bag
• Removable breath guard, fitted
• 🔵 No X-COM3 comms system and no action camera — the helmet is built for both; both are separate purchases

Size guide

Specification

• Model — Nexx X.WST3
• Part number — 01XS323516782
• Colour — Hadal Carbon — Hadal graphic on carbon 3K, green / dark blue
• Homologation — ECE 22-06 (UN) · DOT FMVSS 218 · CCC GB811:2022 · NBR7471:2015
• Safety rating — 🔴 none — SHARP has no entry for the X.WST3; no ADAC or Snell result either
• Independent verdict — scored road test 3.9/5 overall — noise 4/5, ventilation 4/5, comfort 4/5, weight 2/5 · MOTORCYCLE NEWS 4/5
• Helmet type — Full-face, streetfighter — road use; no peak, no goggle provision
• Shell — X-PRO Carbon 3K; three outer shell sizes (XXS–S / M–L / XL–XXXL); made in Portugal
• Weight — 1600 g claimed
• Sizes — XXS to XXXL (eight sizes)
• Impact protection — two-part EPS with a rubber Anti-Vibration interlayer, plus an X-Foam EPP bumper at the chin
• Aerodynamics — functional rear spoiler — improves airflow, cuts drag and adds high-speed stability
• Visor — Visor Recoil System — spring-loaded base side-plates tensioning against twin-lip beads
• Supplied optics — Pinlock® 70 MaxVision fitted, plus a second clear visor and a visor bag
• Anti-fog replacements — Pinlock EVO DKS553 — specific to this helmet
• Sun visor — internal, 18 % larger than the previous generation, drops to just above the bridge of the nose
• Ventilation — six intakes / two exhausts, cheek-pad ventilation, patent-pending Mid Airflow Chamber between the EPS shells, Air Cumbs alveolar-mesh crown pad
• Noise, measured — 100 dB average, scored 4/5
• Emergency release — F.R.S.® Fast Release System — both cheek pads release together, tool-free
• Retention — metal micrometric ratchet with X-LOCK magnetic catch (not a double-D ring)
• Interior — faux leather with ventilation-mesh inserts, dark reflective inserts, X-Mart Dry liner, removable chin-strap covers, removable breath guard
• Head shape — intermediate-to-round oval — independently found glasses-friendly
• Communication — X-COM3 ready, Bluetooth 5.2 — Standard and PRO (2.0 Mesh, Harman Kardon); sold separately
• Camera — side action-camera mount — camera sold separately
• Other — moulded night-vision reflectors

• 1x helmet (X-PRO Carbon, three shell sizes)
• 1x Pinlock 120 XLT MaxVision anti-fog lens (fitted)
• 1x clear visor + 1x second (Smoke 80%) visor + visor bag
• Rear spoiler; side action-camera mount; wind deflector / breath guard