The LS2 Valiant II 180-degree flip, modular motorcycle helmet. Building upon the success of the original Valiant, LS2 has again pushed the envelope of technological development. A newly designed chin bar mechanism is smaller and slimmer than the original, making for a more aerodynamic shell. The Valiant II retains all of the features and functions of the original Valiant, but with a new more modern look. The lightweight, aerodynamic shell is made from LS2's proprietary Kinetic Polymer Alloy (KPA). This proprietary material uses nanotechnology to blend microscopic particles of aramid fibers into a high-end polymer. This material is absolute state-of-the-art in energy management materials, offering a bit of built-in flexibility to disperse energy, the penetration resistance of.