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Nitrous Express 4150 Assassin Plate Stage 6 Nitrous Kit (50-300HP) w/12lb Bottle

Marsoni M251S
Sale price$1403.50
Pay 4 payments of $350.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Express 4150 Assassin Plate Stage 6 Nitrous Kit (50-300HP) w/12lb BottleAssassinate the competition with the Assassin plate system. The Assassin is the most technically advanced single stage plate ever designed. The CNC machined design integrates the nitrous and fuel discharge ports into the outer perimeter. The Assassin offers a unique perimeter spray pattern that assures perfect nitrous fuel distribution. Which in turn solves the problems commonly found on single plane manifolds, particularly small and big block Fords.
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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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4.4 ★★★★★
Based on 1659 reviews
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Product Reviews
P
Verified Purchase
Perfect replacement
Waukegan, US
★★★★★ 5
Plug and play
Easy plug and play.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
H
Verified Purchase
HP
Omaha, US
★★★★★ 5
Excelente producto.
Case perfecto
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Reviewed in the United States on November 19, 2025
P
Verified Purchase
photomark
Pawtucket, US
★★★★★ 5
Worked out great
Replaced on my E46 with this, it had better finish than the original, since it had a worn coating. Fitted like OEM without the OEM price.
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Reviewed in the United States on August 31, 2023
C
Verified Purchase
Carlos peña
Cuba, US
★★★★★ 5
Perfecto
Casa perfecto
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Reviewed in the United States on August 7, 2025
G
Verified Purchase
Good for noisy workspaces 👍
Chelsea, US
★★★★★ 4
Good product
Fits nice. No proplem to install
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Reviewed in the United States on August 14, 2023

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