Our mountain bike standard stem is as tough as they come. Using a 3/2.5 US-made seamless extension to reduce flex, this stem lives up to anything 31.8mm handlebars can throw its way. A four-bolt faceplate keeps things locked down up front, with our smooth, no-knee-bruising dual binder taking care of business on the steerer tube clamp. Flawless welds and precise machining carry throughout this high quality Moots stem. Built in 5 stock sizes with custom always available.