Hi. I'm new to this sight, I hope I'm doing this right? I have a 06 R/K Custom. Out of the box I had the dealer do the big bore kit and cams (stage 2). Have now 8,500 miles on it. When they did the stage 2 it didn't want to run good when cold. Dealership had to do another program to make it run right. But since I have put all the miles on it, it has always had a vibration between 65-73 miles an hour. This is where I notice it more. But really, I think the vibration has more to do with rpm, at 65-73 mph the rpm is more substain. The Customs do not have a tach. So, I took it to the dealer today. They thought the vibration may be from the belt being a bit loose. They tightened it. Vibration still there. Now they make reference to the injectors. Being #8, they say that it needs now the #25. They claim this will rid the bike of the vibration. They say it is running too lean and with this #25, my problems will go away! What are your thoughts? Anybody ever heard of this? Thanks for your time!

 

yea, Ive seen where they had prob's with injectors and made the switch you mention

 

I have an 06 RK. Changed from the 8 degree injectors to the 25.
Never had vibration before or after the change. Doubt that the injector
change will cure the vibration, but it's worth a try.

 

Thanks Jack49.I hope this replacement of injectors does rid the bike of vibration. I've been thinking all kinds of things. How does the change of injectors decrease vibs? Better spray pattern due to about double the fuel orifices, allowing better pattern? How might that solve a vibration issue? Well, the dealer is doing it, no cost to me, we will see if it helps?