If the Japanese style customs of Bratstyle or Gravel Crew get your juices flowing, here's a look at what another Japanese company is doing with European bikes like Moto Guzzis, BMWs and even old BSAs and more. Ritmo Sereno is the place and from what I can tell (the site is all Japanese) they both manufacture their own parts and source a selection of proper pieces to turn your Euro bike into a beautifully customized cafe racer. You can purchase parts individually or they can put a complete bike together for you. Their bikes are built for both street and track.
They have a huge selection of photos in their custom file section. The before and after shots are what get you, from very ordinary beginnings to a refined and sleek machine. All of those plain jane used bikes for sale everywhere suddenly take on a whole new look when you see the possibilities, the Moto Guzzi LeMans III shown above is a great example.
I can't help but think if you filled a bike shop with work like this, you wouldn't be able to keep any on the floor for very long. Subtle and classy!
More photos below:
Link: Ritmo Sereno Euro Motorcycle Shop