Easton EC90 SL 10 Degree Carbon Stem. Easton wanted to make the lightest stem in the world that could withstand years of rigorous abuse on race courses like Paris Roubaix and the result is the superbly crafted EC90 SL carbon fiber stem. In fact, the EC90 SL stem is so strong it will hold up just fine for cyclocross and XC mountain bike realms as well. Easton was able to whittle the stem's weight down to just more than 100 grams in the 100mm length thanks to their EC90 carbon fiber, exclusive TaperWall technology, and a touch of titanium hardware. And because Easton wanted to be sure the EC90 SL would never leave you wanting more when it came to handling or durability, they utilized proprietary Distributed Stress Technology and a Top Lock face plate to optimize the handlebarstem interface for ease of maintenance and peace of mind.