Nitrous Express GM EFI Dual Stage Nitrous Kit (50-150HP x 2) w/5lb Bottle

Nitrous Express GM EFI Dual Stage Nitrous Kit (50-150HP x 2) w/5lb Bottle

Marsoni

M251S

$706.28

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

Nitrous Express GM EFI Dual Stage Nitrous Kit (50-150HP x 2) w/5lb BottleNitrous Express. GM EFI DUAL STAGE (5 Want more horsepower without the hassle and expense of going direct port? Then the NX dual stage nitrous systems are the way to go. Having two stages means you double your power options at the click of a switch. The dual ? Shark nozzles give adjustability from 50 to 300 wheel horsepower in 25hp increments. System comes complete with 5lb nitrous bottle stainless bottle bracket Lightning solenoids extra long

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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Looks nice. Doesn’t work. This watch does not keep time. You’ll be resetting it constantly, and every time you do, the poorly placed dials end up shifting the date too. The design is impractical. The buttons and dials get bumped during normal, everyday use, which throws everything off again. The date display is also extremely hard to read, especially if you have even minor vision issues. The glow feature? Never worked at all. As for the warranty, don’t count on it. The seller is unreachable, and the listed phone number is out of service. I even purchased an extended warranty, only to find out it’s useless until the original 24-month warranty expires, which you can’t even use in the first place. Bottom line: this is a good-looking piece of junk. Save your money.

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Reviewed in the United States on April 23, 2026