The 195 HP rating is published HP at the flywheel not rear wheel. Mechanical losses through the transmission gearbox and final chain drive reduce this number. Numbers typically "thrown around" are approximately a 15% loss but this depends on so many factors: the type of gears (internal to transmission) and sprockets/chain/cush drive, lubricant viscosity at operating temperature etc, etc....yes, I am an engineer and deal with these issues on a daily basis and dislike all the "myths" spun on YouTube and the Internet. All things are not equal, unless they are. Using a 15% loss due to mechanical efficiency would produce 165 HP at the wheel given an SAE certified 195 HP at the crank (look up SAE certification, do not believe Ducati certifies this so all bets are off regarding actual flywheel HP)...and remember actual HP varies from engine to engine. And believe me all wheel dynos are not even close to being NIST certified, you could never afford to rent one if they were. Not to mention the correction factors regarding STP (standard temperature pressure). Again, everything is relative, like Einstein said, except the track, which is the great equalizer.