1. Woodcraft slider spools
These are good quality, typical of Woodcraft. I give them 3 stars for two reasons: One, on my R6, there are two options to mount the spools, one forward of the axle, one at the back of the swingarm. Due to the flange of these, they will only mount in the rear position, so that's one reason. Second, when mounted in that position, they don't allow you to use a Pit Bull trailer restraint. You have to remove them to install the trailer restraint, as they block the axle plugs. If you are using tie downs, and don't mind your spools being at the back of the swingarm, they'll be fine. If you don't, I'd look at another slider.