This is pretty disturbing to me, using back brake
by itself is pathetic compared with every bike
I've ever owned.
I even have fuse #2 pulled out, and the yellow
abs light stays on so I believe it is disable
totally, zero pulsing, but so weak.
---
I didn't pay attention to it's performance level
until this am, I tried 'hard' to get it to skid on
pavement and it would NOT.
We all know the dangers of that back
wheel sliding out to the side, but when I'm in
the mood, I love to slide that back tire and
keep a bike in a straight line, where there
is no chance of a high-side so long as
balance is perfect and we don't let OFF the
brake if it does kick out, being sure to
keep it locked up until coming to a complete
dead stop. (I actually don't need 'complete' ,
just saying that for anyone new, cause they
should definitely be doing so until mastering
that kind of stunt, its not an advance stunt,
but still a stunt none the less, noobs should be
trying or learning first, with dirt-bikes first).

I haven't tried using just the rear brake on my 2024. It has Brembos all around and SS brake lines but so far I haven't noticed a big difference from my 08's Nissan brakes. The 14 has a sucky history of rear brake strength. It might save riders from over-braking in a panic situation. You can get an aftermarket rear brake master cylinder that should help. I was looking at the Berringer floating rear brake MC which would require special installation but it looks like the Gen1 has boltholes inside the frame that would suffice. You might need to fab up some spacers and stuff too. ...or you could probably just find an aftermarket MC that bolts on the foot rest assembly like the OEM one does. I can't remember anything about bore stroke ratios for MCs but that's the key. The 14's rear MC ratio creates extremely progressive pressure that isn't very high. For powerful brakes you can feel at a touch, you want the opposite.

It's so strange, if I had to stop quickly
and for some reason the front brake was unavailable
I'd be done for, this situation is far worse imv
than 'sucky' this thing is flat out pathetic, I've
never had a car or Bike that couldn't just instantly
lock that thing up. And lock it up or not, this brake
slows me down and will eventually stop , but wow,
definitely not in time if I really needed it 'now'.
Front brake is good, and the back brake is super
smooth in slow speed stuff which is cool, so
at least there's that...
So a master cylinder upgrade may be the best solution
then (?) , that seems logical

Back brake is poor on my 2017. I feel your pain, but the front spanks so it's no big deal. My ST1100 with gear drive really stops well. But I sort of think it's the gear drive helping it.

I'd stay stock because I rely on the front more. Hardly use the rear and I know it's a bad habit not to use both all the time. Do a lot of engine braking instead. Rip it, coast it, tap the fronts, I'm stopped already.