Zipp set out with one clear goal design the best-performing carbon stem. Ever. The SL Sprint is optimized for the stiffness required by pro road sprinters, while still being light weight. Just as cyclists maximize performance by being as light, but as powerful as possible, the SL Sprint Stem strikes the ideal balance of stiffness and lightweight to deliver responsive handling without wasting a single watt. The stem weighs in at just 1.8g per newton meter of stiffness. Howd we do that? The SL Sprint was designed using SRAMs Exogram technology, the same used in the ultra light and strong SRAM RED cranks. The SL Sprint was designed with feedback from top pros to meet the unrelenting demands of Grand Tour sprinters. Zipp also tapped into expertise gained from its pioneering carbon stems and exhaustively researched the marketplace to create the SL Sprint Stem.