In pursuit of pure speed, XC riders and racers demand the fastest, lightest, and most technologically advanced cross-country 29er hardtails available— Whether racing a World Cup or hammering their local trails, these athletes want to pedal hard, climb fast, and beat everyone on the mountain, so they won’t accept the slightest sacrifice in terms of weight, efficiency, agility, or ride quality.

We at Rossetti are big believers of the roll-over everything and momentum that 29ers are capable of. The Bertha delivers.The new 2012 Bertha is one of the most advance bikes in the world. It is light weight , stiff, and delivers speed under complete control. It is built using the latest in carbon fiber manufacturing techniques such as Nano technology and Monocoque construction 3k 30 ton.