Single-Cylinder Serenity: Roninsu’s Yamaha SR400 Chopper

Single-Cylinder Serenity: Roninsu’s Yamaha SR400 Chopper When I close my eyes and envision a chopper, the mental reel usually defaults to a specific brand of Americana. I see the Harley-Davidson Panhead, a Shovelhead, or even a Sportster. To some, the metric Chopper world is a secondary thought, even with the long-standing popularity of Triumph Pre-Units,...