This offset Bobbin kit replaces the standard chain adjusters allowing the rear stand to clear aftermarket exhaust systems and the standard rear mudguard. The Cotton Reel protects the swingarm and swingarm core components in the event of a crash or drop, but also double up as paddock stand bobbins. Allowing the motorcycles rear wheel to be lifted into the air via a paddock stand to performance chain adjustment, tyre changes and cleaning! This particular pair of R&G Cotton Reels are compatible with the Kawasaki Z900 '17- & Z900RS '18- & Vulcan S Fitting Instructions: Open PDF