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MTB stems are usually shorter as this results in more control, whereas road stems are longer to provide a more aerodynamic position. However, if you feel too stretched out on your road bike, then switching to a shorter stem can put you in a more upright riding position and improve your long term comfort. We would always recommend opting for a professional bike fit or consulting with your local bike dealer before changing any components, as even small changes can have a big effect. If you are confident in changing your MTB or road bike stem, then make sure you get these two measurements correct - the handlebar diameter and the steerer tube diameter. Match these up with your new stem to ensure both ends will fit your current setup. Feel free to get in touch for our expert advice, or contact your local retailer for further support.