Use the "sizing & fit" link at the top of any product page to find the size that's best for you. While styles vary, the approach to sizing remains the same, using a rider's height and leg length to determine the frame size. Road bike – Leg inseam (cm) x 0,70 = Your frame size (If your leg inseam is 76cm, then your right mountain bike size is 50 cm (20”), road bike 53cm and city bike 52cm) or use the the . This calculator will recommend a road bike … Road bikes sizes are usually given in centimeters while mountain bike and hybrid sizes are usually given in inches. Road Bike … If you’re looking at a used bike online, you might need to contact the seller to provide this information, although they usually include it in the description. We're here to help you with your bike sizing and cycling apparel sizing needs. Sizing charts. Third Method: Bike Size Chart (advanced): Mountain bike size chart Most road bikes come in two styles – racing road bikes (long in the top tube and low at the front for faster riding) and sportive road bikes (which tend to have shorter top tubes and higher front ends for extra comfort). Available in many different styles, road bikes are commonly used for racing, touring and commuting. For hybrid sizing, see here. Road Bike Sizing Guide.