My local dealer is insalling this Stage IV kit (part 92500011) as I write this thread. This kit apparently was released in February of this year and does not appear in the 2012 catalogs. Says it fits '10 and later touring bikes with a 103 but can upgrade from a 96 with additional purchase of big bore cyclinders. The thing that sold me besides specs of 103hp and 110 ft-lbs is that it "will maintain the factory warranty". I still have about 3 years of warranty left so that was a HUGE selling point. This is my first engine build EVER. Its unnerving to see my bike apart and missing its heads.

 

I am running a very similar set-up. The SE-Pro Stage VI did not have a trottlebody compatible with the electronic throttle on the 2012's, so I did the SE Pro Stage III and added the Factory CNC Ported heads with the head exchange program. So, the biuld included the 10.5:1 Pistons, SERT, 259E Cams and the CNC Heads. It was installed before I took delivery, so the dealer is covering under the manufacturers warranty I have not had it dyno'ed yet, but it pulls great and has plenty of passing strength at highway speeds. I love it. I am concerned about long term reliability, but I paln on purchasing the extended warranty. I can tell you the gas mileage is less than stock, but what do you expect if your are installing race parts.

I believe the main difference between the race kit and the street legal kit is the SE Tuner. They porbably just have a download with the street legal one.

 

I just got my bike back from the dealer after the install of the 103 SE Stage IV kit (92500011). The bike dyno'd at 106hp and 112ft-lbs. Wow! I immediatley loved the sound of idle. You can hear the cams tuggin for fuel. When I hit the road the bike was ready to surge. It really punches now in all gears and I reached 100mph easily. Start-ups are fine; no stalls at idle. Accelerates and decelerates smoothly; no popping just pure rumble. No heating issues. Surprisingly little effect on fuel economy. After 500 miles I'm averaging 38mpg mostly highway.