Quick view Nitrous Express Nitrous Express Nitrous Solenoid Super Shark (.157 Orifice) - 15503 Compare $446.99 Wow, how do I start to tell the world why NX is different and better than any other company? Lets start with the NX philosophy: All components must be of the highest quality, no off shore junk; 99% of NX products are produced and assembled in the USA;... Add to Cart Add to Cart