Will a triumph to 160?....
I couldn't possibly answer that, though I'm sure on a private road I saw over 150 appear...
On paper yes it's geared to hit 160, and I'm about 5hp up from stock... So I guess it might be possible.
When you're doing that speed though, no matter how much you have your wits about you, and no matter how much observation you have it is just too quick for a human brain to cope with in terms of an emergency I must admit.
However, I remember riding down to Lymington going along the A31, with a lovely slightly crested straight with no less than 12 cars pootling along - overtaking all those cars with one overtake was seemless and easy, but as a result my speeds were rather high by the time I passed the last car.... I didn't keep those speeds up, and woudln't on a country public road, but sometimes you have to hit silly speeds to make the overtake faster and therefore safer. If a car is going 50, I'd rather over take it as fast as is safely possible.
Ok so this guy wasn't overtaking, and he probably did get carried away - it's very easy to do. Heck, it's easy to break the speed limit in 1st gear without even trying or realising. Bikes have a bigger responsibility of their own safety but licence too as it is so much easier to accrue speed.
Whether or not we think that road is safe or not is not our possibility to judge, the fact is he did over 160 and survived, but was caught. I've unfortunately seen bikers lose limbs riding at 40mph, so the speed argument is daft really.
The 11th commandment - don't get caught.