LS2 FF390 Breaker vs LS2 FF320 Stream

Looking at the selected models side by side: All listed helmets share the same certification entry: UN ECE REG 22.05. FF390 Breaker is the lightest listed at 1.4 kg; the heaviest is FF320 Stream at 1.5 kg (about 0.10 kg apart; weight can vary by size). Verified SHARP star ratings in our data: FF390 Breaker: 2.0 SHARP stars; FF320 Stream: 3.0 SHARP stars. SHARP is an independent assessment, not a legal certification. These points summarise measurable catalogue fields; fit and real-world comfort still depend on trying the correct size.

FF390 Breaker 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: FF390 Breaker: 2.0 stars; FF320 Stream: 3.0 stars.

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.

Comparing the stored legacy zone codes: at the right side, FF320 Stream maps mid while FF390 Breaker maps weaker; at the left side, FF320 Stream maps mid while FF390 Breaker maps weaker. These comparisons use the legacy four-zone fields only; impact speed was not verified for the three-speed map.

Listed weights: FF390 Breaker: 1.4 kg; FF320 Stream: 1.5 kg. FF390 Breaker is the lightest in this set, about 0.10 kg below the heaviest. Treat this as catalogue data for a typical size — exact mass can change with size and lining.

Pinlock-ready anti-fog visor support is marked for FF390 Breaker 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 FF390 Breaker and FF320 Stream.