In the background at the start of the first video there are modified KZ 1300, KZ 900 and an H1 500 triple 2 stroke. I owned all 3 in their stock form with a couple changes. My triple was an S2 350 which I rode in high school without a license...oops...and the other was an LTD 1000. Great bikes. The triple often had a speed wobble and scared me a few times.
The 1300 6 cylinder was a locomotive. Smooth as silk and very strong. I rode it in snow commuting a few times with no problems. Hit a rabbit at 120mph once and just felt a slight "tap" through the handlebars.
I'm thinking about getting a used Harley now....neighbor had a stroke and can no longer trust his legs to hold it up. He bought a beautiful GoldWing trike and is selling his 97 Electra Glide for a fair price with current maintenance and a few go-fast(er) parts.