The Zipp Service Course Stem is a versatile and reliable piece of equipment that can help any rider find their ideal riding position. Input from professional riders across all disciplines lead to the development of this stem. It is made with an aluminum body and steel hardware. A slightly lower grade of aluminum than the SL drops the price while maintaining low weight and high strength. With an outstanding stiffness to weight ratio, it is great for sprinting and climbing alike. This version has a rise of 25 degrees and is available in four different lengths. Note that this version accommodates 1 1/8-inch steerer tubes. The Zipp Service Course Stem offers an outstanding price on confident and comfortable riding.