186.15 ~ USD (27,621 JPY)
Delivery Information
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Size Chart For Helmet
How to measure the size of your head
First, measure the circumference of your head with a measuring tape.
Measure from the highest point of your forehead, just above your eyebrows, horizontally backwards to the highest point of the back of your head and around.
Based on the measurement, choose the size from the table below.
However, unlike hats, helmets cannot be sized by head circumference alone.
Also, helmets of the same manufacturer may feel different even if they are the same size depending on the model.

Ordering Size | XS | S | M | L | XL | 2XL |
Head Measurement (cm) | 53 - 54 cm | 55 - 56 cm | 57 - 58 cm | 59 - 60 cm | 61 - 62 cm | 63 - 64 cm |
* This universal size chart is for reference only. Sizes vary by manufacturer and product.
Product detail
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color MATT TITANIUM GREY
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color type graphic
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Helmet SG mark ○
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Helmet PSC mark ○
[Color] MATTE TITANIUM GREY
[Model] STREAM II
[Standard] SG / PSC
[Material] KPA (LS2's proprietary high-performance composite resin based on ABS)
[Shell size] S, M-L, XL-XXL (3 shells)
[EPS size (interior compatible)] S, M, L, XL-XXL (4EPS)
[Features]
Full-face helmet with inner visor
[Detachable parts]
Head Pad
Cheek Pad
Chin strap cover
chin curtain
[Components]
Helmet pouch
[Type of PS Mark] PSC
[Name of Reporting Company] SEIDEN CORPORATION
**TITANIUM is a vintage finish color, so there may be small or large individual differences in the evenness of the scratch finish and the riding of dust.Bubbles may appear in the finish.
*Pinlock sheet is not included.
*Models with graphics are not available in size S.
*The image may contain other products.
*There may be changes in product specifications due to the manufacturer's reasons.
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Multifunctional full-face helmet with convenient features.
Full-face helmets with useful and convenient features for a wide range of users from touring to street.
■Cap
High impact resistance and flexibility.
LS2's unique lightweight material "KPA "*.
KPA material is used, which is characterized by its ability to efficiently absorb and disperse energy.
Three SHELL and four EPS are available depending on the size, providing the right size appearance and quality fit.
Abrasion resistance, 94% UV protection.
Prevents distortion of the field of view to the maximum extent possible.Ensures clarity of vision.
Wide viewing angle of 214 degrees in horizontal direction.
*KPA. Kinetic Polymer Alloy
A material made by synthesizing several materials, mainly ABS resin.
■Space
Wide space around the ear.
The new liner construction of JAPAN FIT reduces pressure around the ears, which has been a problem, and provides a secure hold.
It also prevents interference with the ear when a premium headset from another manufacturer is used.
■Shield inner visor
Highly sealed center-locking shield.
・CENTER LOCK SHIELD
Push-button quick release system.
The standard full-face model is equipped with a center lock mechanism, which is a nice feature for a standard full-face model.
The locking mechanism prevents wind noise and rain from entering.
・INNER VISOR
A slide switch on the rim of the cap allows smooth opening and closing.
Like the shield, it has 94% UV protection and is useful for riding in strong sunlight.
Compatible with Pinlock sheets (sold separately) manufactured by Pinlock, which are effective in reducing fogging.
■OTHERS
・Speaker Hall
Larger and deeper than conventional products.
Chinstrap buckle
Convenient and strong steel quick-release buckle.
Points of Attention
* The helmets sold on this site are based on the Japanese safety standard.
We are not responsible for accidents, damage, injury, or any other related matters as a result of purchasing this product.