It looks like no stock of GSS06 (2ea 23mm adaptors) at www.headrushhobbies.com or www.customrccars.com either however I see GS217 1ea 23mm Wheel Hex at [link=http://www.customrccars.com/product_temp_trial.asp?id=1667&cat=21&custom=0]www.customrccars.com[/link] it is listed as a replacement part for the Nemesis, should work on the Genesis.