Knight Design Rear Axle Sliders for Buell XB models, spool style, black anodized Get protection, function and looks with these quality axle sliders! Proudly made in USA. Fit all XB models, including XB9R, XB12R, XB9S, XB12S, XB9SL, XB9SX, XB12Ss, XB12SCG, XB12STT, XB12SX, XB12X Ulysses, XB12XP and XB12XT Easy installation: slip the shaft through the middle of your axle, and mount a sliders on each side with the included bolts. Tighten bolts securely. We recommend using removable threadlocker on the bolts during installation.