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The Nitrous Express purge system with a 4AN manifold, push button and vent tube includes a Lightning purge solenoid to vent air from nitrous lines. Purging the air allows harder launches and quicker 60‑ft times, which the source reports can trim up to two‑tenths off quarter‑mile elapsed times. The kit is intended for systems where solenoids lack an integrated purge port.
Nitrous Express Nitrous Purge Valve (4AN Manifold Push Button and Vent Tube)
