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Nitrous Express 4150 Assassin Plate Stage 6 Nitrous Kit (50-300HP) w/15lb Bottle

Marsoni M251S
Sale price$618.34
Pay 4 payments of $154.59 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/15lb 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.
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4.9 ★★★★★
Based on 985 reviews
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Verified Purchase
Jim C
Massapequa, US
★★★★★ 5
It's K&N. Top quality filters
Fit perfectly. I've used K&N filters before and they worked great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 22, 2025
J
Verified Purchase
John E. Souder
Omaha, US
★★★★★ 5
Fits perfectly
Fits perfectly and easy installation. Thanks !!!
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Reviewed in the United States on October 6, 2025
A
Verified Purchase
AmazonCustomer
Fort Morgan, US
★★★★★ 5
2024 Honda CR-V
Worked for 2024 Honda CR-V Sport (Hybrid). Sizing was appropriate and the new filter slid in without any issue. Consider the filter to be of good quality. Would recommend.
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Reviewed in the United States on December 20, 2025
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 4
more power
get more horse power & gas mileage
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Reviewed in the United States on April 19, 2026
S
Verified Purchase
Stymy
Lowell, US
★★★★★ 5
It Fits
it s fit and works like other K &N products
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Reviewed in the United States on July 8, 2025

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