Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75 HP) w/15lb Bottle

Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75 HP) w/15lb Bottle

Marsoni

M251S

$508.82

Get it in 3 business days with 1 day shipping. Friday, May 29

Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75 HP) w/15lb BottleNitrous Express. ALL SPORT COMPACT EF If you want the best this is it. The NX Stage 1 EFI nitrous system is the top of the line EFI power booster on the market. From the highest flowing solenoids to our patented Shark nozzle this system screams nothing but quality. NX has a system for every EFI car in the world. Available in horsepower levels from 35 50 75 for most 4 and 6 cylinder cars and up to 150 for 8 10 and 12 cylinder engines. This NX EFI Stage

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This relay has experienced failure again after just a couple of months of use. It's not the mag coil that fails but rather the contacts are of such low quality that they corrode beyond their ability to conduct power, and fast. I have had to change two of these so far and am on the third one. The seller will ship replacements but who wants to keep replacing them? I have to travel in my RV with a spare. This relay has never been exposed to the elements. It's safely mounted inside a sealed bay. Be aware of any brands that look like this, they are all the same.

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Reviewed in the United States on November 15, 2025