This Krugger-built machine is the coolest SR400 we've seen in a long time
Based in Belgium, Fred 'Krugger' Bertrand has built the Yamaha SR400 that you see here, as the latest addition to Yamaha's Yard Built custom bike program. Inspired by Yamaha's MotoGP heritage, the SR400 has been built in collaboration with Fred's friend and fellow Belgian, Bernard Ansiau, who happens to be a mechanic for... Valentino Rossi! And if that weren't enough, Ansiau has even worked on the bikes raced by former greats like Wayne Rainey, Kenny Roberts, Randy Mamola and Norick Abe.

Together, Fred and Bernard have built this SR400 in tribute to Yamaha's 1970s TZ racebikes. "I think it's impossible to have a custom machine that lives and breathes our racing history better than this," says Cristian Barelli, Yamaha Motor Europe's Marketing Coordinator. "It's such a beautiful bike and the longer and closer you look at it, the more detail you find to enjoy. You wouldn't normally associate the SR400 with MotoGP racing, but this build is as genuine and authentic as it's possible to get, a real Yard Built special," he adds.
In order to extract some performance from the air-cooled single-cylinder SR400 engine, Fred and Bernard have given it an Aisin 300 supercharger, with a custom-built plenum chamber, a one-off stainless steel exhaust system and an S&S 48mm carburettor in place of the original fuel-injection system. No pow...