LS2 Stream II Full Face Helmet Review: What I Learned

Finding a full-face motorcycle helmet that feels safe, comfortable, and practical without becoming overly expensive can be harder than it sounds. I spent time looking into the LS2 Stream II Full Face Helmet, paying close attention to the things that matter after the first few rides: fit, airflow, visor use, weight, noise, and everyday comfort.

What I like about the Stream II is that it tries to balance several needs instead of focusing on just one. LS2 lists a KPA shell, ECE 22.06 approval, a built-in sun visor, removable liner, multi-density EPS, and several ventilation points.

LS2 Stream II Full Face Helmet: The Basics

The Stream II is aimed at urban and touring riders. It has a fairly clean shape, but the feature list is more useful than the simple look suggests.

The current LS2 specifications list a KPA shell, three shell sizes, a weight of about 1,550 ± 50 grams, and ECE 22.06 homologation.

Feature	What I Found
Shell	KPA
Weight	About 1,550 ± 50 g
Certification	ECE 22.06
Shell sizes	3

Why the ECE 22.06 Rating Matters

This was one of the first things I checked. ECE 22.06 is a newer European helmet standard with more demanding testing than the older ECE 22.05 standard.

The Stream II is officially listed by LS2 as ECE 22.06 approved.

That does not mean any helmet can prevent every injury. Fit still matters enormously. A certified helmet that fits poorly is not something I would choose just because the label looks impressive.

How the LS2 Stream II Fits

Fit is where I would spend the most time before buying. The Stream II is generally described as an intermediate-oval helmet shape by major motorcycle retailers.

That means it may suit a head that is somewhat longer front-to-back than side-to-side, rather than a very round head.

Fit Check	What I Want
Cheek pads	Firm but not painful
Crown	Snug with even pressure
Movement	Minimal when shaking my head
Strap	Secure without choking

My Biggest Fit Lesson

I would not judge the fit during the first 30 seconds. New helmet padding can feel quite firm at first, and that is not always a bad thing.

The better test is whether the helmet stays stable without creating sharp pressure points. I would also measure my head carefully and then try the helmet on before relying only on the size chart.

LS2 Stream II Ventilation in Real Use

Ventilation is another area where the Stream II looks well thought out. LS2 lists a top vent, chin vent, exhaust ports, and a breath deflector.

That gives warm-weather riders several ways for air to enter and leave the helmet.

I would still keep expectations realistic. A full-face helmet will usually feel warmer than an open-face design, especially when sitting in traffic.

Ventilation Part	Main Job
Top vent	Brings air toward the upper head
Chin vent	Helps airflow around the face
Exhaust ports	Help move warm air out

What Happens on Slow City Rides?

This is where ventilation systems can feel less impressive. When the bike is moving slowly, there is less air pressure pushing through the vents.

At higher speeds, airflow generally becomes more noticeable. So I would not judge the Stream II’s ventilation after sitting at a traffic light on a hot afternoon.

The Visor and Built-In Sun Shield

The visor setup is one of the Stream II’s more useful features for daily riding. LS2 lists a scratch-resistant, UV-resistant main visor, a quick-release system, a built-in sun visor, and Pinlock readiness.

I particularly like the idea of having a drop-down sun visor. It saves me from carrying a second tinted shield or stopping to change visors when sunlight suddenly becomes annoying.

Visor Feature	Practical Benefit
Sun visor	Helps with bright sunlight
Scratch resistance	Useful for daily handling
UV resistance	Adds protection from UV exposure
Pinlock ready	Allows an anti-fog insert

One Thing I Would Buy Separately

The helmet is Pinlock-ready, but the anti-fog insert may not be included. LS2’s current specifications specifically list the helmet as ready for Pinlock, while accessories are sold separately.

For riders dealing with cool mornings, rain, or high humidity, I think this is worth keeping in mind.

Is the LS2 Stream II Comfortable?

Comfort depends heavily on head shape, but the Stream II has several features aimed at long-term use. LS2 lists laser-cut foam, a removable and washable liner, hypoallergenic materials, a chin curtain, and an extra-comfort liner.

That washable liner is something I value more after owning motorcycle gear for a while. Sweat builds up. Dust gets inside. Eventually, every helmet needs some attention.

What About Helmet Weight?

At roughly 1,550 grams plus or minus 50 grams, the Stream II is not an ultra-light racing helmet.

Still, I think that number is reasonable for a feature-rich full-face helmet with an internal sun visor.

Riding Style	My View
Short city rides	Very suitable
Daily commuting	Suitable
Weekend touring	Suitable
Long high-speed rides	Fit and personal comfort matter more

How Noisy Is the LS2 Stream II?

This is one area where I would avoid making a promise. Wind noise changes a lot with motorcycle type, screen height, riding position, speed, and even the shape of the rider’s head.

Independent testing has described the Stream II’s noise insulation as satisfactory, rather than class-leading.

For me, that means I would still use proper motorcycle ear protection on longer or faster rides.

Is It Good for Touring?

The answer is yes, with a small qualification. The Stream II has the features I would want for everyday touring, including a sun visor, ventilation, washable liner, and Pinlock-ready shield. LS2 also lists it as ready for an LS2 intercom.

I would just remember that touring comfort depends on more than the helmet itself.

LS2 Stream II Pros and Cons

After looking at the specifications and real-world testing information, I think the strengths are fairly clear.

The compromises are also worth knowing before spending money.

Pros	Cons
ECE 22.06 approval	Not especially lightweight
Built-in sun visor	Pinlock insert may be extra
Removable washable liner	Wind noise varies by rider
Good ventilation setup	Fit must match head shape
Multiple shell sizes	Full-face helmets still get warm

Who Should Buy the LS2 Stream II?

I think the Stream II makes the most sense for riders who want one helmet for commuting, city riding, and occasional touring.

The feature set is strong for a practical road helmet. The biggest reason I would consider it is the combination of ECE 22.06 certification, sun visor, ventilation, washable interior, and Pinlock-ready main shield.

Rider	My Take
Daily commuter	Good choice
Urban rider	Very practical
Weekend tourer	Worth considering
Track rider	I would choose a track-focused helmet

Final Thoughts on the LS2 Stream II Full Face Helmet

My biggest takeaway is that the LS2 Stream II is not trying to be an exotic racing helmet. It is a practical full-face helmet built around everyday road riding.

I especially like the combination of ECE 22.06 certification, internal sun visor, useful ventilation, washable liner, and Pinlock-ready shield.

My advice is simple: get the fit right first, then judge the features. A comfortable helmet that stays securely in place is much more useful than one with a long feature list that does not suit your head.

Frequently Asked Questions

Is the LS2 Stream II a good full-face helmet?

Yes. The LS2 Stream II offers ECE 22.06 approval, a KPA shell, sun visor, ventilation, washable liner, and Pinlock-ready shield for daily road use.

Is the LS2 Stream II heavy?

It weighs about 1,550 ± 50 grams. That is reasonable for a full-face helmet, but riders seeking an ultra-light helmet may prefer a lighter model.

Does the LS2 Stream II have a sun visor?

Yes. The Stream II has a built-in drop-down sun visor, so you can reduce glare without changing the main clear visor.

Is the LS2 Stream II Pinlock ready?

Yes. LS2 lists the Stream II as ready for a Pinlock insert. The Pinlock accessory may need to be purchased separately.

What head shape fits the LS2 Stream II?

The Stream II is generally listed as an intermediate-oval fit. The best approach is still to measure your head and try the helmet on before buying.