This trick race bike started as a standard 848 engine that was stripped and converted to a single cylinder by removing the vertical cylinder and the crank was modified and rebalanced. Cylinder and piston were increased to a 1098 making the single cylinder displacement increased to about 520cc. No head work was done and it uses standard 848 early cams but. by adding later 848 cams and porting. horsepower could rise between 4-8hp. Engine currently provides 63hp and was built here at GP Motorcycles. For a full history of the bike google Felkins SuperMono. much more information is available there. Bike is in great condition. ready to ride and race. Ohlin suspension. fresh Diablo Supercorsa tires. GoPro mounts on the tail and tank. too much to list. Offered at a fraction of the build cost. A rare find. don't miss the opportunity to own this amazing race bike. Avaible for viewing here in San Diego. CA. Crating and shipping are available for an additional fee.