If you have an opportunity to visit Tokyo City, make a visit to this district. It's called "Motorcycle Town" or "Bike Town" because it's the motorycle district of Tokyo with 2 blocks of shops selling all kinds of motorcycle & riding stuff.

Here are a couple of pics that i took when i was there.

Directions

1. Take the subway to Ueno Station
2. Exit the station through the "Asakusa" Exit
3. You will see a highway. Motorcycle Town/Bike Town is under the highway, opposite the park & museums.
4. To really enjoy this place, it's either you can speak Japanese or have someone who can speak the language accompany you . English is not a widely spoken language in Japan and the further you are from the business district the less it's spoken.

Click here to download a map of Ueno district