An amazing bike I've never heard of... An Ace Polini tuned V2 Simson.

Wow.... just plain freaking WOW!  I've never even heard of this bike.  what an amazing little machine!

From Hagen Schroot:
 Hello, here are some pictures and videos from an Simson S51 V2 with 50HP. The Simson S51 is 50ccm motocycle with 3,6 HP stock bulid in East Germany in 1980`s. This Simson is the personal ride from an famous exhaust manufacturer for the Simson scene. At the moment is only 120km/h fast, because of the brakes , but lift up the front in 5tgh gear!