44/28 gearing
Is it possible to get this gearing on a standard crank. I notice the new sram XX has an option with this, but is it possible to buy new rings for my racface to get this combination?
If it is any idea of a company who makes them and also what position they would sit in? Either a 42 upper or 30 lower may be acceptable, but I'd rather have what I specified in the title.