Great Spools, although not ideal for my Ninja 1000
These are clearly very high quality spools which threaded up perfectly with my 2015 Ninja 1000. I've mounted them and subsequently jacked up the back end with my track stand.
However, through no fault of the spools, the stock exhaust on my bike can hit the spools if I go over a bump. The Ninja 1000 has a weird exhaust shape, and until I change it out, I'll have to use some different spools. Somewhat disappointing because they look and work perfectly otherwise. I ended up using the Keiti Mini Swingarm Spools, which are just a bit shorter, and hence, they clear the exhaust cans even when the suspension is compressed.
I'm hanging on to these spools though, for when I change out my exhaust. So, in short, I recommend these spools for any bike, except the Ninja 1000 with stock cans. For this use the Keiti MINI Swingarm Spools.
The gen 4 Ninja 1000 has stock exhaust pipes very close to the swingarm. So finding spools that will fit the bike without hitting the stock cans is a bit of challenge. I had already tried a few without luck. These keiti mini spools work perfectly. I tried them out, and even compressed the suspension a few times. They fit with plenty of clearance, and they work great with my pitbull trackstand. So now they are threadlocked in place (with loctite blue, of course) because they can stay in all the time.
The spool sliders were easy to install. I put some thread locker on them before they were installed to keep them from backing out while I am riding. They feel like high quality parts and I am glad I was able to get them for a good price from Motorcycle Superstore.