A bicycle stem allows you to change the way your bike fits and how it rides. Shorter stems are typically found on mountain bikes and downhill bikes as they can improve handling. Longer and lower stems are typically found on a lot of racing bikes as they can allow the rider to achieve a more aerodynamic position on the bike. It is important to ensure your bike is fitted with the correct length stem to give you the best possible fit on your bike. Shop in-store and online for 99 Bikes range of bicycle stems.