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Nitrous Express nitrous purge valve with poly line (4AN) is part of the NX purge system that includes a Lightning purge solenoid and a 4AN manifold plus push button and vent tube. Purging air from the nitrous line allows harder launches and quicker 60‑ft times; this valve installation takes advantage of built‑in purge ports on solenoids to add purge functionality where available.
Nitrous Express Nitrous Purge Valve w/Poly Line (4AN)
