Stock head pipe, Randy. I decided against riding it on Sunday after holding my fingertips near the crack and feeling how much exhaust was escaping. It's just a hairline crack, but I was shocked at just how much hot air was blowing out of it, yet you could not hear a thing. Who knows how long it's been that way, but now that I know it's there, I don't want to ride it that way. I rode it 20 miles to the dealer tonight for them to work on between now and Thursday evening. They were kind enough to get it in on short notice for me so I can get it fixed before the IL HOG Rally this weekend.
What is the opinion on whether or not this could've done any damage to the motor? My thought is probably not, but I suppose this would've caused the rear cylinder to run lean, at least to some extent.