8,000 on my 2010 Ultra Classic. One 4K trip to Key West via the Dragon and Cherohala Skyway and a 2,400 mile trip to Sturgis. Box stock and NO heat problems on the trip to Key West in 102 to 105 degree temperatures every day for 8 days. In the 90's on the Sturgis trip.
Cat still installed and stock programing. Even in a one hour traffic tie up due to a wreck the engine never went into the mode turning off the rear cyclinder. The heat issue is much overstated from my experience. Sure, exhaust pipes will melt stuff that touches them. So will a exhaust pipe on a water cooled motor.
The only complaint is the gas tank which is a 6 gallon tank. Maybe in the design engineers dream. It will not fill very full and will not draw to fully empty. I was running on the low fuel light for about 15 miles when I pulled into Wall, S.D. and it only took 4.77 gallons. I think the best that can be drawn out of the tank is five gallons. The mileage was poor at an average of 41 mpg.