At last fall’s EICMA motorcycle show in Milan, Italy, reborn OSSA revealed two fuel-injected two-stroke-powered machines—one for trials, the other an enduro. Two-stroke? Fuel-injected? Two-stroke streetbikes mostly disappeared after the mid-1980s because of their high unburned hydrocarbon emissions (UHC). The cause? With a carburetor fuel system and piston-controlled exhaust and scavenge ports, some fresh charge [...]