The real limit of a Triumph Bobber is tank range not comfort. You run out of fuel long before numb bum can set in!

But you do occasionally see them outside of their natural habitat. I've seen them on track at both Castle Combe and Thruxton. At both riders were enjoying the performance but not the lack of ground clearance.

If you're worried abut them being overpowered don't Google "Thornton Hundred" or you'll see a 200bhp 170mph supercharged version. That was run at Goodwood a few years back to great applause.