Just as a tidbit of info. BAC Technologies here in Ohio sells Carbon Fiber Axles that weigh about 7.5lbs. They seems legit to me......HOWEVER....being carbon fiber....it's not cheap. About $630 for those that are EPIC serious about getting an axle. They don't make any SPECIFICALLY for the Blaster, however, they do make it for the Banshee so it might work....not sure.
Carbon Fiber ATV Axles by BAC Technologies Ltd.