Gravel drivetrains now exist to accommodate the ever-burgeoning gravel market. The question is, do we really need them? VeloNews tech editor Dan Cavallari and editorial director Ben Delaney discuss the ins and outs of gravel drivetrains and help you decide whether you need one or not. Is a road drivetrain okay to use on a gravel bike? What are the benefits of a gravel drivetrain?Listen to this week's episode to find out.