Priced an even grand below the XSR900, the new 2018 XSR700 is a smaller, lighter, and more affordable way into Yamaha’s retro-streetbike realm. And so, which to choose, given that their design approach is similar? Essentially, the XSR700 is a much simpler machine. Its 689cc parallel-twin engine has 19 percent less displacement than the XSR900’s triple, and it doesn’t feature the bigger bike’s advanced ride-by-wire throttle system. Likewise, its frame is steel versus aluminum on the XSR900, and its basic suspension lacks the damping adjustability of the bigger bike. In good news, though, the XSR700 has triple disc brake with standard ABS and contemporary 17-inch wheel and tire sizes.