It's not just about carbon. Our Blitzfire is the ultimate aluminium racing bike. Stiffer and more durable than many of the competition's carbon frames. Blitzfire integrates most of the qualities of its 27.5" inch brother in the Rock Machine family – the Explosion. It delivers outstanding agility, lightweight as well as race specific geometry. Blitzfire has everything any aspiring XCO racer can wish for... In an amazing price/performance Aluminium package. Stiff. Smooth. Fast!