Two Words: Freight Train !!!
This thing could not be any more different from my 2003 R1 if it had a mast and sailed on water...
A little background for comparison sake. I sold my 2003 R1 a few months ago to get into a Duc. It was an awesome bike, but I was bored and it's top end power surge really doesn't suit the shorter tracks I ride here at Firebird.
It was well set up with a full Ti Arata system, PCIII USB, Graves stacks, BMC Race filter, Custom map, Race tech springs & valving in the front and stiffer rear spring with Race Tech valving and adj. collar in the rear. I also ran a 180 rear tire and did a 520 conversion (-1/+1).
That said, it was a great bike and I will def miss it
The 999s has some goodies too. Section8 Superbike in Michigan installed an STM Slipper Clutch, Full 57mm Ti Exhaust with Corse ECU and filters, as well as a stiffer rear spring & revalve. They also set the cam timing, blueprinted the fuel injection, threw on a 180 rear and did a 520 conversion (0/+3) alnog with Cycle Cat rear sets.
First thing I noticed climbing on the Duc is how incrediby narrow it is. It really feels thin.
The riding position is very forward compared to the R1 which means a lot more pressure on my wrists. Easy street cruising is less comfortable and turning around to get a good look behind you is a little tougher since your hunched over more.
Start it up and the engine comes alive with a deep thump - almost like it's at the limit of the starter. Every Duc I've been on in the 999 series is like this. It's very different.
There's an incerdibly low thump thump thump from the 90 degree V Twin pumping away through the 57mm system. Def sends a tingle up your spine. This is not the smooth deep mean growl I got from my R1. It's more primal. Like a sleeping dragon! A very cool sound.
The dry clutch adds to the sound track too. For those who have never heard a dry clutch, think "bike sounding like it's about to explode into millions of teeny bits." Like a bad tambourine rattling down there. It's unique and nostalgic, but for the uneducated at a stop light, they're probably thinking "Nice that you can't take care of such a nice bike Jackazz!" Lol !