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Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit w/Composite Bottle

Marsoni M251S
Sale price$879.89
Pay 4 payments of $219.97 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit w/Composite 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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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1852 reviews
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J
Verified Purchase
JAMES ERIK FOREHAND
New York, US
★★★★★ 5
Great
Size: 1.9" x 9.9" x 11.4"
Great value for the money and easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
M
Verified Purchase
Mark Liszkiewicz
Belleville, US
★★★★★ 5
nice quality
Size: 1.9" x 9.9" x 11.4"
I happen to be a fan of K&N air filters. Fit perfect in my vehicle. Seems like a much nicer quality filter than the cheapo filters from the parts store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
G
Verified Purchase
gwpconcreteman
Grantham, US
★★★★★ 5
excellent product
Size: 1.9" x 9.9" x 11.4"
easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
L
Verified Purchase
Leyla Raymondo
New York, US
★★★★★ 5
Great purchase!
Size: 1.9" x 9.9" x 11.4"
This has worked out quite well. I have had it since 2023 and have been cleaned thru about 6 maintenance schedules. It's been 2 yrs and it's in great shape. Worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
O
Verified Purchase
OldMan
Carnegie, US
★★★★★ 4
Really filters the cabin air
Size: 1.9" x 9.9" x 11.4"
K&N filters are always a cut above. Can’t say the same for service/support after the sale.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026

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