LS2 Stream II Lux Helmet
The LS2 Stream II Helmet features an aerodynamic, sport styled shell made from LS2’s proprietary Kinetic Polymer Alloy (KPA). KPA uses nanotechnology to blend microscopic aramid fibers with a high-end polymer and allows for amazing energy managing performance with managed flexibility that absorbs energy without the ricochet effect of inferior materials.
The Stream II meets the ECE 22.06 rotational energy management specifications using Advanced Rotational Energy Management Technology (AREM), another LS2 proprietary process. The rear spoiler allows for dynamic flow-through ventilation, plus the 3D laser cut foam in the cheek pads, removeable, washable liner with special flex-crown comfort system is super comfortable and easy to keep fresh. 3 shells and 5 energy absorbing EPS liners make for a fit that is nothing short of amazing. The overall finish and performance sets the Stream II at the forefront of full-face motorcycle helmets.
Features:
- Intermediate oval fit
- 3 shells
- 5 energy absorbing EPS liners
- High tech, aerodynamic, sport styled Kinetic Polymer Alloy shell
- AREM rotational energy management meets ECE 22.06 standards
- Dynamic, flow-through ventilation
- Quick release chin strap
- Class A polycarbonate Pinlock ready face shield (Pinlock sold separately)
- Moisture wicking liner and cheek pads
- Meets or exceeds ECE 22.06 and DOT FMVSS standards
It’s hard to imagine just how good the LS2 Stream II full-face motorcycle helmet is. Style, features and performance that surpass helmets costing literally twice the price, this helmet is an out-of-the-park home run. It starts with an aerodynamic, sport styled shell made from LS2’s proprietary Kinetic Polymer Alloy (KPA). This high-tech material uses nanotechnology to blend microscopic aramid fibers with a high-end polymer. This blend allows for amazing energy managing performance with managed flexibility that absorbs energy without the ricochet effect of inferior materials. The Stream II meets the ECE 22.06 rotational energy management specifications using Advanced Rotational Energy Management Technology (AREM), another LS2 proprietary process. The rear spoiler allows for dynamic flow-through ventilation. The 3D laser cut foam in the cheek pads, removeable, washable liner with special flex-crown comfort system is super comfortable and easy to keep fresh. 3 shells and 5 energy absorbing EPS liners make for a fit that is nothing short of amazing. The optically correct, Class A polycarbonate shield is Pinlock ready, for the ultimate in fog management (Pinlock sold separately). The overall finish and performance sets the Stream II at the forefront of full-face motorcycle helmets. Even those costing twice the price. Meets or exceeds ECE 22.06 and DOT FMVSS standards. Intermediate oval fit.
Before You Select a Size: Helmet-Fit Facts
A helmet is one of the most important pieces of riding gear you will choose, and the size printed on the label is only a starting point. Head circumference, head shape, crown contact, cheek-pad pressure and the retention system all affect whether a helmet fits correctly. Two helmets marked the same size can fit very differently—even within the same brand.
- Measure around the widest part of your head, keeping the tape level and approximately one inch above your eyebrows.
- A new helmet should feel evenly snug around the entire head without sharp or painful pressure points.
- When you move the helmet gently from side to side, your skin should move with the liner rather than the helmet sliding independently.
- Fasten the retention system and confirm that the helmet cannot roll forward or lift off the head.
- Wear the helmet for several minutes before deciding. Comfort padding may settle with use, but an incorrect shell shape or painful pressure point is unlikely to be solved by choosing blindly.
Why Come to Eagle Leather for a Helmet Fitting?
Our staff is trained to help with helmet fitting and can help you compare head shape, size, pressure points and retention across different models. Inventory changes daily, but Eagle Leather consistently carries many hundreds of helmets—often approaching 1,000 units—across half-shell, open-face, modular, adventure and full-face styles. That selection gives you the opportunity to compare brands and internal shapes instead of relying on a size label alone.
For such an important piece of riding gear, we encourage you to visit Eagle Leather for an in-person fitting before selecting a size without trying the helmet on.
