Gearbox failure ??
My XB12s has done about 8000 miles. Riding at about 80mph and it jumped out of gear and into a neutral. The gear-lever is locked solid so can't get any gears - it made a tiny tinkling noise from the gearbox (I guess) as I coasted to a stop.
Motorcycles - Buell - Lightning XB12S - 2004 Buell Lightning XB12S
Answers & Comments
You need to overhaul the engine and check the gear drum selector and it's bearings