The LS2 FF805 Thunder

LS2 claim that their ‘all-new for 2021’ ultra light, full-carbon FF805 Thunder is their most technically advanced helmet yet, offering the latest race technology, first class safety, comfort and practicality for the road. And it comes in colours other than black! Or at least the graphics do…

The press release says Thunder’s 100% carbon fibre shell offers high penetration resistance and energy dispersion, yet is ultralight – weighing just 1400 grams. Designed and developed in LS2’s European HQ in Barcelona, it’s aerodynamically optimised to help keep the head stable at speed and comes in three outer shell sizes for the smallest, lightest possible helmet in each fitment range. It’s an aggressive style that seems to carry many motocross cues.

Up front there’s a 3D optically correct visor, which sits in an ultra-wide aperture for maximum all-round vision. It features an ingenious quick release system, derived from LS2’s race helmets and comes with a Pinlock Anti-Fog System as standard.

There are induction ventilation ports at the chin, forehead and on top and there’s internal channeling through the EPS liner to large exhaust ports at the rear. Each port is said to be quick and easy to open/close,to suit.

The Thunder’s comfort lining is breathable and hypoallergenic, as well as being removable and washable for year-round freshness. The shell is designed with a ‘long-oval’ shape to follow the natural contour of the head. Combined with Laser-Cut Foam inserts, it gives a snug and reassuring fit. A Chin Curtain also comes as standard, helping to reduce wind noise, but as we haven’t tested this newly-released LS2 yet we can’t vouch for how well this works.

Alongside the carbon fibre shell, Multi-Density EPS inside the Thunder helps cushion the head from impact, and should the worst happen an Emergency Release System allows first responders to remove the cheek pads without disturbing the head and neck. Safe and secure fastening is provided by the reinforced chin strap and proven D-Ring fastener.

The LS2 FF805 Thunder is available in a solid carbon option and eye-catching graphics too. Prices start from just £379.99 – incredibly competitive for a full carbon road helmet – and at £419.99 for graphics. For detailed specifications and to find your nearest stockist, visit