2012 Harley-Davidson Street Glide - FLHX, Part of the unmistakable style of the Harley-Davidson Street Glide motorcycle is plenty of room for showing off your paint. This classically styled, bold six-gallon fuel tank doesn't just give you a bigger canvas for premium or custom paint it holds six gallons of go so you can eat up a lot more road between pit stops. We know fuel economy is importantbut so is style. Sharp, eye-catching colors and precision-crafted Harley-Davidson tank medallions complete the unique look of this tough bagger.