Upgrade your Arctic Cat or Yamaha that came with three 8" wheels on the rear axle.  This kit comes with the hardware to add the 4th wheel between the rails, 2 plastic OE wheels with our Ceramic Hybrid Bearings, installed, and 2 Billet 8" Wheels also with our Ceramic Hybrid Bearings installed. 
 
Re-uses your existing rear axle hardware with the exception of the long centre spacer tube and washer.