Ensure Proper Fit with The RSX : The RSX is available for handlebars with a 31.8mm or 35mm diameters. This version is 31.8mm only. Please check your handlebar before purchasing and ensure you order the correct version. The RSX Direct Mount Stem is specifically designed to be used with a dual crown fork, making it a great choice for those in need of a stem for their off-road or downhill bike. RSX bike stem is precision CNC manufactured from 6061 aerospace grade alloy to provide a lot of support and rigidity, while keeping the weight as low as possible. Adjustable Extension : It is a beautifully simple yet brutally tough bike component, featuring built-in adjustment to offer 45mm and 50mm lengths with 20mm and 30mm rise. Choose the 31.8mm bar bore and 30mm rise model of the RSX Direct Mount Stem for a reliable and stylish upgrade to your Sur Ron bike. Introducing the RSX Direct Mount Stem - the ultimate component for your off-road or downhill bike. Specifically designed for use with dual crown forks, this bicycle stem is a must-have for rider looking to take their performance to the next level. Crafted with precision CNC manufacturing techniques and made from 6061 aerospace grade alloy, the RSX bike handlebar stem is both strong and lightweight, making it perfect for the demands of off-road and downhill riding. It features built-in adjustment for a customizable fit, with lengths of 45mm and 50mm and rises of 20mm and 30mm available. Plus, If you're looking to upgrade the stem on your Sur Ron X bike, Choose the 31.8mm bar bore and 30mm rise model may be a good option to customize the fit and handling of your Sur-Ron bike. But it's not just about function - the RSX Mountain Bike Direct Mount Stem is also a thing of beauty. Its sleek, simple design is both visually appealing and tough enough to handle even the toughest trails. And with a wide range of colors to choose from, you can find the perfect match for your bike's style. So why wait? Upgrade your ride with the RSX Mountain Bike Stem and experience the unmatched performance and durability of this top-of-the-line component. You'll be proud to show it off on every ride!