The LS2 Thunder is the race and track day successor to the very popular Arrow and Arrow Evo. The Thunder features a host of important updates. An improved stronger visor mechanism, easy to use visor release, bigger and better ventilation plus a revised aerodynamic shape allied to the huge aperture make this a great choice for club racers and keen track day goers.

A spare dark visor, pinlock, protective padded helmet bag and tear offs just add to the great value that all LS2 helmets offer.

SHELL Certified ECE 22.05 & DOT 1400 ±50 XS - 2XL CARBON 3 Shells Long Oval	COMFORT Chin Curtain Liner Washable Breathable Hypoallergenic Laser-Cut Foam	VISOR UV Resistant Ready for Tear OFF Pinlock Max Vision Ready Quick Release System
SECURITY Safety Reflectives Patches Double D Ring Emergency Release System Reinforced Chin Strap Multi-Density EPS	VENTILATION Top Vents Front Vent Exhaust Ports Channeled EPS Breath Deflector
SIZES LS2 offers multiple shell sizes, specifically sized EPS protective liners and our high quality, high performance comfort padding with LS2’s exclusive 3D Laser Cut Foam for the perfect fit and all-day comfort ADULT SIZES HEAD CIRCUMFERENCE XXS 51-52 cm XS 53-54 cm S 55-56 cm M 57-58 cm L 59-60 cm XL 61-62 cm XXL 63-64 cm