Have 07 RKC with IDS 66 tooth sprocket.
The QUESTION Is?
Does harley Make A 68 tooth sprocket to fit the IDS. How much do you have to change?
What kind of speedo error would there be?

Yes I did do a search. Came up with all kinds of primary drive changes. No final drive changes.
Believe 07 bike needs a little lower gear to start out with under a tour load. Sprocket change the quickest.

Thanks Ace

 

Just change the crank sprocket down a tooth or two. Changing the final drive will require more labor and a speedo recal. Most popular is 2 teeth down on the crank with will be close to the earlier ratios