It's nearly the end for Yamaha's little single-lunger, the SR400. Emissions regulations are going to put the 400cc standard out of production, and the writing is on the wall for the reliable air-cooled single. But before that happens, Portuguese bike builders Nuno Capêlo and Ricardo Santos took to the bike before it rides off into the sunset. What they came up with is a modern cafe-styled SR400 that harks back to some of the great Yamahas of the past. A completely revised suspension with USD forks makes the bike very corner friendly, and hand-laid fiberglass front and rear fairings give it a nouveau retro look. Wider rubber and a conversion to front drum brakes speak to racers of the past, and the cork seating surface and grips are a nod to one of Portugal's chief exports. The SR400 may be going, but this example won't be forgotten.