Nitrous Express Lightning 375 Nitrous SolenoidThe NX Lightning 375 is the largest progressable solenoid on the planet! Engineered with only one internal 90 degree turn in the nitrous flow path, a true . 375 orifice and its ability to be electronically progressed makes this solenoid a must have for any serious competitor. The 375 minimizes nitrous boiling and delivers a denser form of liquid nitrous to the system resulting in a cleaner running and easier to tune nitrous system. The 375 is