Only around 25K on mine.
Last year I stopped for gas in Nevada (I was on my F650GS Twin) and a rider on an 04 Electra Glide Standard pulled in. Looking it over I noticed it had the stock exhaust and was actually almost totally stock other than a solo seat and the air box. He'd bought in new and just turned over 150,000 miles that week. I asked what he'd done to it over those 150K? He said he's on his 3rd rear cylinder header "Y pipe" and the stock tensioners and oil pump were changed somewhere around 50,000 miles, other than that gasoline, oil, tires, and brake pads. He changes oil about every 5K and it goes to the dealer "once every year or two just be checked over". The motor has never been opened up it even had the original drive belt.