Dimension 31.8 Stems are fully forged 6061-T6 aluminum stems that have a 4-bolt handlebar clamp. - 31.8mm can be used with 26.0 bars with additional shim (SM5317) - Dimension stems are not intended for use with carbon handlebars or carbon steer tubes - Weight: 130g-180g

An adjustable stiffness suspension stem that smooths out the ride by reducing the affects of impacts and road vibrations. - Unwanted vertical movement is absorbed by twin interchangeable elastomers - Stem retains torsional rigidity - Travel is limited to 1-2 centimeters - Made with 6061-T6 Aluminum - Includes 5 swappable elastomers (2 pre-installed, 3 additional) to customize the ride feel for your bike, weight, and riding style

The redesigned Range is lightweight, tech-ready, and sized for the modern rider. Now, let's dig into what makes this stem-fabulous. With a 3D forged alloy body, this stem is light with a large faceplate for a more secure clamping surface. For the tech nerd in all of us, it also has a GoPro/headlight mount. Because, if you don't get that footie, did it really happen? Plus, with the headlight mount, a world of nighttime adventures opens up. We sized this stem at 40mm and 50mm because we believe those options work best with modern bike geos and provide the right amount of space in the cockpit. Get excited about upgrading your stem this biking season...you know you want to.   Features: - Weights: 40mm - 174g / 50mm - 210g - For 31.8mm handlebars - GoPro/headlight mount - Fits 1-1/8" steerer tube - Stack height: 38mm - 3-year warranty!