On public roads, this Ducati turns heads with its classic livery and outright UFO appeal—and it stretched my neck with its 990cc V-Four GP-bike performance. It stretched my ear canals too: The D16RR desmo scream echoing off Ventura’s coastal foothills raised quite a racket. (Hearing it from the patio of Rusty’s Pizza on Main Street below, lucky owner Amstutz, builders Roland Sands and “Welding” Rodney Aguiar, and Thirdwheel John Burns would’ve sworn there was some sort of offshore powerboat race going on if they hadn’t known better.) Dirty Duc’s midrange feels comparable to what your typical liter-bike makes at peak, and it just keeps building till 14,200 rpm. If you were waiting for the rev limiter to arrest-hook your wheelie, it’s a good idea to have a back-up plan and your right foot covering the brake. On the other hand, thanks to upright ergos and the wide Fatbar, it’s comfortable to ride and easy to keep between the curbs around town; short-shifting keeps the decibels down to a dull roar no louder than a brace of open-piped Harleys.