Yamaha XS400 tracker

It’s usually Yamaha’s XS650 that gets the custom treatment, so it’s nice to see a smaller capacity XS get a workover. This tracker-style machine has a Yamaha XS400 motor squeezed into an XS250 frame, and it was built over a couple of years by Drew Scialpi-Sullivan, from rainy Manchester, England. He modified the frame to fit a Harley XR750 tail section, and designed a tank that would conceal a BMW brake master cylinder—to keep the Renthal bars looking as clean as possible. The engine has been freshened up with a light porting job, and fitted with NOS carbs and a...