The Nitrous Express 1-1/4 inch billet bar mount for billet bottle brackets allows the mounting of your Nitrous Express nitrous bottle to be as unique as the kit itself. With NX bottle mounts, your options are limitless. NX bottle mounts are available in billet and stainless steel and for all bottles from 2.5 pounds motorcycle bottles to 12 pounds composite bottles and all the way up to 15 pounds NX bottles.