Mash is a group of riders, messengers, designers and photographers born some years ago among the fixed gear heads of San Francisco. Their first short eponymous short film pioneered a new aggressive urban cycling culture. A year in the making, this frame, collaboration between Mash riders and Cinelli’s designers, has just got meaner and meaner: “You may never blink again” is how they chose to describe it. We believe this to be the most advanced fixed-gear specific frame on the market.