Few modern motorbikes can boast of the lineage and authenticity of Yamaha’s SR400. The venerable air-cooled single has been in continuous production since 1978, changing only a little in the nearly four decades hence. Yes, the 2016 models offer electronic fuel injection and maintenance-free batteries, but the kickstart-only thumper remains gloriously unchanged. As a result of its longevity, the SR has spawned a customization cult like few, if any other Japanese motorcycles. There’s enough parts available to make an SR resemble anything from a Manx Norton to Matchless or, in this case, something truly unique. This images comes our way from Richard Wilder of aftermarket parts supplier Wilder Factory. His work transforming this ordinary SR into a quick, eye-catching custom is impressive to say te least. Many of the bits installed on the SR are one-offs fabircated by Wilder and full details will appear in the April/May issue of Cafe Racer magazine, so keep an eye our singles fans.