ULTRABIKEX, Is a full service bike shop in the heart of beautiful Key Biscayne. With a variety of services like: Bike Rental, Retul bike Fitting, Repairs, and much more. A knowledgeable staff will answer any question or doubt you can have at the moment you enter the store. If you are a beginner or a advance cyclist UltrabikeX has a great inventory of bikes that can fir your budget.