I just purchased an 2015 K1600GTL Exclusive. The bike has the Akrapovic slip on mufflers. I am willing to trade anyone with a K1600 their stock exhaust for the Akrapovics. Although the Akrapovics are a little throatier, they are not loud, I just prefer the OEM exhaust look and sound.
My research says these fit all of the K16 GT and GTLs up through 2021
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