LS2 · Stream 2
LS2 Stream 2
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
Designed for oval to intermediate head shapes; may feel tight on very round heads due to aggressive cheek pad design.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Design Concept & Background
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Conquer the open road with the LS2 Stream 2, a full-face helmet engineered for those who demand uncompromising style and safety. Featuring a sleek, modern aesthetic that commands attention, this helmet delivers superior aerodynamics to minimize wind fatigue on long-distance rides. The advanced ventilation system ensures your head stays cool, while the lightweight construction reduces neck strain. Equipped with LS2's signature MIPS technology, it offers critical rotational impact protection for peace of mind at any speed. Whether you are cruising city streets or carving through mountain passes, the Stream 2 combines premium comfort with robust performance, making it the ideal companion for your daily commute and weekend adventures.
Rider Profile & Intended Use
Where to buy
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Amazon (US)
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Price History & Trends
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Product Concept & Specifications
LS2 (Spain)Engineering & Technical Analysis
The LS2 Stream 2 utilizes a multi-density EPS liner and an adjustable retention system to ensure precise head locking without pressure points. Its aerodynamic shell design incorporates wind tunnel-optimized contours that significantly reduce drag while directing airflow through the integrated chin bar vents for efficient cooling.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Certification Documents & References
Interactive Size & Fit Finder
Designed for oval to intermediate head shapes; may feel tight on very round heads due to aggressive cheek pad design.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Part numbers
| Product style | MFR. product # | SKU | Availability |
|---|---|---|---|
| Matte Black / | — |
LS2-STRE-BLK | instock |
| Hi-Viz Yellow / | — |
LS2-STRE-YEL | instock |
| Vortex Red / | — |
LS2-STRE-VOR | instock |
| Vortex TC-2 / | — |
LS2-STRE-VOR | instock |
| Tech TC-1 / | — |
LS2-STRE-TEC | instock |
| Raptor Red / | — |
LS2-STRE-RAP | instock |
Available Colors & Graphics
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Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.