With Excel discontinuing the "x" wheel, we are not stockign these wheels. They replicate the yamaha spoked wheel, but are 5mm larger to help reduce slide wear.  They use the stock 6005 bearing so they are a direct replacement on all skids with oem wheels containing 6005 bearing. 
 
Will not work on 05 rage, 03-04 RX-1 and 04-05 RX Warrior.