Zipp sl sprint stemthe zipp sl sprint stem has been specifically designed to provide the ultimate performance for pro road riders zipp used feedback from grand tour sprinters to create a stem that has the stiffness to handle their unrelenting demands yet with as low a weight as possible it even features an aerodynamically shaped faceplate that smoothly integrates with the stems body the sl sprint has everything you need to make sure you out perform the opposition features material ud carb