Sleeper: A stealthily upgraded Triumph Street Twin

We’re all for extreme machines that draw a crowd when parked up, but we also love ‘sleeper’ customs—those that keep their performance potential under wraps. At first glance, this Triumph from Amsterdam looks like a regular Street Twin with a mild retro makeover. But it’ll probably get its rider from A to B faster than any other Street Twin in Europe, thanks to a heavily reworked engine and big suspension upgrades. It belongs to sculptor Ram Katzir, whose work is shown all over the world—from theaters in Tel Aviv to parks in Japan. And when Ram isn’t working on static...