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Looks good works well. These are the correct spools specific for the ninja/z400 models. The part number is DXS-8.4 which can be found on Driven's website. They come with a pair of washers that are needed because the thread hole of the 400 is slightly recessed from the face of the swingarm. 4 stars because if you look closely at the black part of the spool you might find inconsistencies in the finish like on mine. Basically, some parts look more black than others as if a really fine final coating didn't spread out evenly on the metal. Honestly you would never see it unless you're really looking at it.
3. Great Swingarm Spools
Posted by Elvis Henry on 23rd Apr 2020
Just got mine today, I was shocked how fast they got here considering Covid 19 world we live in now. Install was super easy, make sure you have blue or red thread lock. These are a must have if you plan to do your own work like oil changes, chain cleaning etc...
4. Driven D-axis spools
Posted by Andy B. on 7th Jul 2019
Very well made product! Even the package is very nice! Easy to install and looks great on the bike, and works great with the pit-bull rear stand!
5. Swingarm spools
Posted by Michael Bell on 29th May 2019
The product worked well on my ZX6R but required trimming with a dremel because of spool shape on my ninja 400. I am sure that DRIVEN could care less.
Posted by Ivan Baychev on 5th Jun 2018
Spools are spools. But these look great, have a nice finish and are quolity build
Posted by Unknown on 5th May 2018
Over all pretty good. Functional, nice finish, simple design. Work well.