I have the x3 and apart from the wind noise (wear ear plugs anyway as im going deaf) i find it an amazing helmet, i got my on the recomendation of my dad who got one after having the x2

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Less Brake, More Throttle

MoDs,
Kev's fork spaces, Givi Engin Bars, Carbon Fiber frame and hand guards, R&G Fork and swing arm Protectors, CCC stainless steel Ovals