THE ALL NEW 50 STUNT AXLE SLIDERS ARE TOUGH AS NAILS.  THEY PROTECT THE SWINGARM FROM HITTING THE STREET WHEN YOU DROP THE BIKE.  THEY COME WITH ALL THE MOUNTING HARDWARE AND BOLT UP IN MINUTES.  AVAILABLE IN A STUBBY 1.25 LENGTH FOR THE STREET, OR 2.25 FOR THE STUNT RIDER.  FITS DRZ 400 SM