I had idling issues with my Duc. Thought it might be the coils, so I purchased a new pair from my local Duc dealer last month.
The new coils did not fix the problem, so the old coils went back in. I sold the Duc and now I have a pair of practically new 4th gen ignition coils (latest version w/ cable plug) up for sale.
Asking $200 Firm for the pair shipped to all lower 48. Includes original packaging and receipt. You will not find a pair of coils in this almost new condition for this price. This is a great deal for any 749/999 with bad coils!