Whether it's a younger rider or perhaps you are just small framed yourself, an 18 inch BMX Bike may be just the fit. The 18" bike provides a solution for the rider who is too big for a 16, but not quite big enough to move up onto a 20 inch bike just yet. <p>Shop 18in BMX Bikes here at Dan's Comp. Click on any of the bike models to view a description and specs.</p>