Amongst hardcore bikers, to ride “mash” usually involves propelling oneself on a fixed—gear bike through traffic, pedestrians, and stop signs at the highest possible speed. Given San Francisco’s precarious geography and many high-grade streets, the crew at MASH Transit represent some of the most daring members in this scene.

With its storefront on 14th Street in Duboce Triangle, Mash Transit is both a store and gathering point for San Francisco’s entrenched biking community. Having gained prominence in 2007 for their film “MASH SF” chronicling San Francisco’s fixie bike culture, they currently stage street races, publish a webzine and produce their own video series. Their store also offers up quality custom-built bike frames, accessories and equipment, just in case zooming through busy intersections isn’t quite your thing.