These sprockets were so scarce we had to resort to "borrowing" 20 tooth sprockets for the 30mm billet transmission output shafts from fellow competitors.  That was enough to convince us to bug the hell out of a market leading manufacturer to make some for us since they didn't want to market them.  

That being said, these sprockets are made with the best hardened steel available and have performed flawlessly on many of the fastest bikes in Land Speed Racing.

The sprocket is supplied as pictured with spacer and fits OEM sprocket covers and Robinson Bearing Support Kits.

  ** It is only for the Robinson or TTS 30mm billet output shafts**

**This sprocket does not fit the original Hayabusa Gen 1 or Gen II output shafts**