Kawasaki Ninja 250R 2008-12 Woodcraft 10mm Swingarm Slider Spools Make the most of your rear stand!! Woodcraft swingarm spools are designed wide for easy stand location with raised lips on their outer edges for security. Your stand will work even better when coupled with these spools. These spools are made from solid black delrin and have a fully supported Aluminum core to give them extra strength 09+ ZX6R NOTE: Will not work with stock exhaust (Exhaust will break swingarm spools when suspension is compressed).