Great attempt to make a nice kit by including swing arm side collars. Most name brand kits don't include these. Unfortunately, the outer diameter of the side collars are wrong (too small). This creates a gap between the collar and the seal that goes around it. The seal isn't even close to mating against the collars - so they are useless. Also, the thrust bearing washers are not machined smooth. They are pitted out of the package and would most likely cause premature thrust bearing failure.