LS2 FF353 Rapid vs LS2 FF320 Stream

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FF353 Rapid
0

LS2

Full specs page
FF320 Stream
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
LS2 FF353 Rapid Front
FF353 Rapid
LS2 FF320 Stream Front
FF320 Stream
Right side
LS2 FF353 Rapid Right side
FF353 Rapid
LS2 FF320 Stream Right side
FF320 Stream
Rear
LS2 FF353 Rapid Rear
FF353 Rapid
LS2 FF320 Stream Rear
FF320 Stream
Left side
LS2 FF353 Rapid Left side
FF353 Rapid
LS2 FF320 Stream Left side
FF320 Stream

Technical specifications

Feature FF353 Rapid FF320 Stream
Brand LS2 LS2
Model FF353 Rapid FF320 Stream
Product / model code — —
Safety summary SHARP: 2.0 stars SHARP: 3.0 stars
Helmet type Full face Full face
Durability
Weight 1.3 kg 1.5 kg
Size XS S M L XL XXL XXXL XXS XS S M L XL XXL
Listed price (reference) $50 $110
Material Thermoplastic Polycarbonate
Retention system Micrometric Micrometric
Certification UN ECE REG 22.05 UN ECE REG 22.05
Shell sizes Multi size Single 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

LS2 FF353 Rapid vs LS2 FF320 Stream: 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. FF353 Rapid is the lightest listed at 1.3 kg; the heaviest is FF320 Stream at 1.5 kg (about 0.20 kg apart; weight can vary by size). An internal sun visor is listed for FF320 Stream. 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?

FF353 Rapid is listed with UN ECE REG 22.05. FF320 Stream 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: FF353 Rapid: 2.0 stars; FF320 Stream: 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 left side, FF320 Stream maps mid while FF353 Rapid 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: FF353 Rapid: 1.3 kg; FF320 Stream: 1.5 kg. FF353 Rapid is the lightest in this set, about 0.20 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 FF353 Rapid and FF320 Stream (ready/compatible in our catalogue — not “insert included in the box” unless the retailer says so); an internal sun visor is marked for FF320 Stream; no internal sun visor flag for FF353 Rapid.