Zipps sl speed stem represents the essence of carbon componentry its stiff secure and light weight with a sleek design that compliments any bike its a perfect addition to a mountain climbers favourite feather light road bike but its tough enough to tackle gravel and cyclocross designed using sram exogram technology found in sram red cranks the new sl speed stem weighs just 123g 100mm while exceeding our stiffness to weight standards zipp set a new standard of performance and sty