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Nitrous Express Proton Series Nitrous Kit w/5lb Bottle

Marsoni M251S
Sale price$250.85
Pay 4 payments of $62.71 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Express Proton Series Nitrous Kit w/5lb BottleNitrous Express. PROTON SERIES NITROU Proton Series nitrous systems combine performance durability and value in a compact and easy to mount module. Proton systems contain high quality made in the USA solenoids that are capable of producing 150 horsepower to the wheels. The black anodized aluminum housing not only looks great it pulls heat away from the solenoids for extreme durability. This Proton system includes jetting for 35HP 50HP and 75HP. This
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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.
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4.7 ★★★★★
Based on 2316 reviews
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Champ
Draper, US
★★★★★ 5
Quick delivery
Fit like they should and seems to be working great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
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Verified Purchase
GINGER B.
Draper, US
★★★★★ 5
Great product
Great product
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Reviewed in the United States on December 30, 2025
C
Verified Purchase
chris s
Fort Morgan, US
★★★★★ 5
Fit Mercury 150 saltwater 2 stroke great!
These fit my Mercury 150 perfect. Took it out for a test run and engine ran great with no overheating issues.
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Reviewed in the United States on August 26, 2025
R
Verified Purchase
Robert Werkhoven
New York, US
★★★★★ 5
Work’s okay
They work ok, as expected
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Reviewed in the United States on August 26, 2025
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Verified Purchase
Ron McCrea
Whiting, US
★★★★★ 5
Just as good as OEM
Exactly what I expected...
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Reviewed in the United States on August 9, 2025

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