★★★★★ 5
Very good filter
Size: CA12290-Premium
Very good filter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
Nitrous Outlet Weekend Warrior 4500 Tunnel Ram System - Gas/E85 (5-55 psi)(100-400 HP)(15LB Bottle)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Nitrous Outlet Weekend Warrior 4500 Tunnel Ram System - Gas/E85 (5-55 psi)(100-400 HP)(15LB Bottle)4500 Flange Dual Wet Nitrous Plate System Includes Gaskets Nitrous Jetting for 100 400hp Fuel Jetting for Gas and E85 for 5, 7, 10, 45, and 55psi Includes Hard Lines Includes Installation Hardware Continuing Innovation: The Weekend Warrior is a first for Nitrous Outlet as we have never offered our own single billet bar style nitrous plate. It is intended to work with dual plane intakes, but is equally at home on 4500 flange single plane intakes. Its
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Your Nitrous Outlet Weekend Warrior 4500 Tunnel Ram System - Gas/E85 (5-55 psi)(100-400 HP)(15LB Bottle) orders ship within 1-2 business days.
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- Fast: 2-3 business days
- Express: 1-2 business days
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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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4.1 ★★★★★
Based on 1972 reviews
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Product Reviews
★★★★★ 3
Not 99.9 %
Size: CA12290-Premium
Only 98% efficient. Says 99.9 in the ad. There is a huge difference between those two efficiencies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
★★★★★ 5
Accord
Size: CA12290-Premium, Size: CA12290-Premium
Fit was perfect on 2018 accord, delivery fast and packaging intact.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2025
★★★★★ 5
Prefect fit
Size: CA12290-Premium, Size: CA12290-Premium
Excellent product! OEM Replacement. If you are buying for horse power gains. You will not really notice any difference
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2025
★★★★★ 5
K and N is the best
Size: CA12290-Premium
In my opinion, you can’t buy a better air filter. Been buying them for all my cars since the 1990s.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2024
