Unfortunately I can't find any parts fiche online that shows the latest gen of the two, so I can't confirm it or not. They sure do look the same, though.

Sold. Cheers.

I’ve had 2x Mk1s and am now on my second Mk2 - the previous 3 bikes were fine, perfect even when it came to throttle control -  this 2020 plate though has a terrible jerk - just a slight mis-position at low throttle can lunge the bike forward in a corner - it’s definitely a thing and baffling why this bike is different - engine is the usual bag of nails - it also whines loudly in top gear (my first Mk2 did it in second) - all part of  BMs reputation, backside saving and compensating extended warranty approach no doubt? . Great to ride as long as you put anxiety to the back of your mind !!!

I swapped saddles on my Fireblade for a Corbin and it was horrible, it completely ruined the riding position.

I only took delivery of my S1K this weekend but have done 100 miles over two days on the stock saddle with bar risers and I would say that for me the riding position is close to spot on, but the saddle could be a bit more comfortable. However as the riding position is so good, I’ll just keep it.

Well, that's the thing- bums are different and prefer different seats. What works for one rider may be a torture rack for the next.

I've had the stock seat, the comfort seat and now the Sargent on mine, and I've done long (1000+ mile) days on all three.

But then, I've done plenty of 100 miles and 24 hour mountain bike races on skinny little racing bike saddles, too, so I may not be the best judge of comfort!