Here a few links to some pics and vids of a very rare 500cc GP machine the Librenti V4 500cc two stroke. In the pic above you see Marco Papa and the 1992 bike. These bikes were made by Giancarlo Librenti who died in 1993 at the age of 56. Librenti is one of the more illusive Italian makes, just like VRP. First you had Cagiva and then Paton and after that the small ones like Librenti and VRP.
Found some great pics on the web about König and the König factory. König was the manufacturer of the great four cylinder boxer two stroke outboard racing engines. These engines were also used in the 500cc motorcycle world championship by Kim Newcombe.
Honda RS500 triple two stroke racer ex Gustav Reiner aka Kamikaze Gustl, seen at the Classic Show in Bremen February 2012.
This time the old and forgotten Blatawcm site with a lot of very nice Yamaha YZR500 engine pics on it, grab them while you can!!
Cagiva/Suzuki RG500 MK4, this was the first bike in the 500cc class under the name of Cagiva. This is the ex Alex George machine as ridden in the TT of Man in 1979 and 4 Grand prix, Austria 13th, Italy 13th and 2 retirements. He won the big race at the TT beating Mike Hailwood on the Big Honda, but the Cagiva/Suzuki failed in the senior and Mike won the race.
This time a really amazing bike made by Brett De Stoop, this 1000cc triple Suzuki (based on a GT750 of 35 years old!!) with home made cylinderblock is capable of almost 374 kmph!!
