The zipp service course 6 degree stem has everything you expect in a high performance stem strength stiffness reliability a precise fit and great visual look the redesigned service course stem now offers a new faceplate and body design for greater stiffness and easier installation at a price that meets any rider39s budgetthe service course stem new shape and 3d forged construction results in an improved stiffness to weight ratio of 175gnm the stemrsquos new design and clean g