Bunnell, FL (3/10/2014) - Wienen Motorsports Yamaha's Nick Gennusa throws down a big whip on his Yamaha YFZ450R in Florida. Gennusa will be competing for the Championship in the Mtn. Dew ATV Motocross Pro-Am Class Championship. Nick Gennusa is the latest addition to the powerhouse team of Pro ATV Motocross defending champion Chad Wienen & Thomas Brown.