HJC FG ST vs LS2 FF397 Vector

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FG ST
0

HJC

Full specs page
FF397 Vector
0

LS2

Full specs page

Impact resistance map (legacy four zones)

No verified 6 / 7.5 / 8.5 m/s point data for these records. Legacy four zones are not placed into the three-speed map without a verified speed.

Front
HJC FG ST Front
FG ST
LS2 FF397 Vector Front
FF397 Vector
Right side
HJC FG ST Right side
FG ST
LS2 FF397 Vector Right side
FF397 Vector
Rear
HJC FG ST Rear
FG ST
LS2 FF397 Vector Rear
FF397 Vector
Left side
HJC FG ST Left side
FG ST
LS2 FF397 Vector Left side
FF397 Vector

Technical specifications

Feature FG ST FF397 Vector
Brand HJC LS2
Model FG ST FF397 Vector
Product / model code — —
Safety summary SHARP: 5.0 stars SHARP: 3.0 stars
Helmet type Full face Full face
Durability
Weight 1.6 kg 1.3 kg
Size XS S M L XL XXL XXS XS S M L XL XXL XXXL
Listed price (reference) $200 $130
Material Composite fiber Fiberglass
Retention system Double D-Ring Micrometric
Certification UN ECE REG 22.05 UN ECE REG 22.05
Shell sizes Multi size Multi size
Pinlock ready
Scratch-resistant visor
Quick-release visor
Removable cheek pads
Intercom ready
Ventilation channels
Internal sun visor
Removable liner

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Helmet comparison FAQ

HJC FG ST vs LS2 FF397 Vector: what are the main differences?

Looking at the selected models side by side: All listed helmets share the same certification entry: UN ECE REG 22.05. FF397 Vector is the lightest listed at 1.3 kg; the heaviest is FG ST at 1.6 kg (about 0.30 kg apart; weight can vary by size). Pinlock-ready anti-fog visor support is listed for FF397 Vector (not all models). These points summarise measurable catalogue fields; fit and real-world comfort still depend on trying the correct size.

Do these helmets have the same safety certification?

FG ST is listed with UN ECE REG 22.05. FF397 Vector is listed with UN ECE REG 22.05. On paper they share the same certification entry. ECE 22.05, ECE 22.06 and DOT are legal approval standards; a SHARP star rating (when present) is a separate independent lab assessment and must not be read as the same kind of result. We do not infer SHARP stars from an ECE mark alone. Verified SHARP ratings on this page: FG ST: 5.0 stars; FF397 Vector: 3.0 stars.

What do the colours on the impact zone map mean?

Our map stores regional codes on a 1–6 scale (greener ≈ stronger on this page; brown ≈ weaker). When verified multi-speed SHARP point data is present, you can switch 6 / 7.5 / 8.5 m/s and see front-top, front-lower, rear, left and right separately — missing speeds or points show “no data” and are never filled from another speed. Older records may only have the legacy four zones (front/rear/sides) without a verified speed label; those are not placed into the three-speed map. Zone colours are not the same thing as a SHARP star rating. For the models on this page where the safety source is marked SHARP, zone codes are treated as SHARP-linked map data.

How do these helmets compare in front, rear and side impact tests?

Comparing the stored legacy zone codes: at the right side, FG ST maps stronger while FF397 Vector maps weaker; at the left side, FG ST maps stronger while FF397 Vector maps weaker. These comparisons use the legacy four-zone fields only; impact speed was not verified for the three-speed map.

Which helmet is lighter, and by how much?

Listed weights: FG ST: 1.6 kg; FF397 Vector: 1.3 kg. FF397 Vector is the lightest in this set, about 0.30 kg below the heaviest. Treat this as catalogue data for a typical size — exact mass can change with size and lining.

Which helmets support Pinlock or have an internal sun visor?

Pinlock-ready anti-fog visor support is marked for FF397 Vector (ready/compatible in our catalogue — not “insert included in the box” unless the retailer says so); not marked for FG ST; an internal sun visor is marked for FG ST and FF397 Vector.