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Nitrous Express 4150 Assassin Plate Pro Power Nitrous Kit (100-500HP) w/15lb Bottle

Marsoni M251S
Sale price$956.50
Pay 4 payments of $239.12 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Express 4150 Assassin Plate Pro Power Nitrous Kit (100-500HP) 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.
  • 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
4.2 ★★★★★
Based on 1282 reviews
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Rodolfo Baca
Birmingham, US
★★★★★ 5
very good and very fast service.
Size: 10 Wide, Color: Black/Black
very well made shoes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
J
Verified Purchase
John D. Furlow III
West Palm Beach, US
★★★★★ 3
Looks not finished
Size: 14, Color: Black/Black
They are probably good shoes but they look unfinished
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Stylish comfy shoes
Size: 11.5, Color: Black
My husband adores these shoes. They are true to size. Comfy and stylish and lightweight which makes the ideal combo for him. Glad I purchased them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
S
Verified Purchase
Steve C
Massapequa, US
★★★★★ 5
Good shoe!
Size: 12, Color: Black
Comfortable shoes for someone with wider feet and challenges finding comfortable dress loafers! Good price for the quality and comfort! Have two pairs
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Reviewed in the United States on December 29, 2025
D
Verified Purchase
Dr. Scott Williams
Alexandria, US
★★★★★ 5
Comfort and Appearance
Size: 9, Color: Black
The shoes were as advertised. Marc Joseph (I hav 4 other pairs) are the perfect shoes for me with my physical needs. Additionally they are exceptionally comfortable and attractive. This pair I returned because they weren’t quite the right fit for me. They are, like my other Marc Joseph shoes, very well made and very attractive.
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Reviewed in the United States on February 19, 2026

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