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Nitrous Outlet 4500 Hornet 2 Dual Stage System - Hard-line/Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Four Solenoid Boomerang Bracket - (Gas/E85)(5-55 psi)(50-500 HP Per Stage)(12lb Bottle)
Nitrous Outlet 4500 Hornet 2 Dual Stage System - Hard-line/Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Four Solenoid Boomerang Bracket - (Gas/E85)(5-55 psi)(50-500 HP Per Stage)(12lb Bottle)
Nitrous Outlet 4500 Hornet 2 Dual Stage System - Hard-line/Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Four Solenoid Boomerang Bracket - (Gas/E85)(5-55 psi)(50-500 HP Per Stage)(12lb Bottle)
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Nitrous Outlet 4500 Hornet 2 Dual Stage System - Hard-line/Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Four Solenoid Boomerang Bracket - (Gas/E85)(5-55 psi)(50-500 HP Per Stage)(12lb Bottle)

Marsoni M251S
Sale price$1643.99
Pay 4 payments of $411.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Outlet 4500 Hornet 2 Dual Stage System - Hard-line/Two .122 Nitrous Solenoids/Two .177 Fuel Solenoids/Four Solenoid Boomerang Bracket - (Gas/E85)(5-55 psi)(50-500 HP Per Stage)(12lb Bottle)870 HP Max Flow Dual Entry 4500 Flange 360 Discharge Pattern Precise Atomization Anodized Billet Aluminum Stinger Plate Boomerang Solenoid Bracket Gasket, Jetting and Hardware Included Nitrous Jetting for 50 500 Per Stage Fuel Jetting for Gasoline and E85, 5 55psi Fuel Systems Dual Stage Hornet 2: The Hornet 2 is based on the hugely successful Stinger Nitrous Plate lineup and follows the ideology that nitrous plates are not one size fits all. It is
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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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4.6 ★★★★★
Based on 1627 reviews
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Product Reviews
S
Verified Purchase
Sam E
Houston, US
★★★★★ 5
Perfect fit and high quality.
Size: (Pack of 1)
Good product, not much to say. The product arrived quickly, looks to be of high quality construction, fit perfectly and took me only a couple of minutes to install. I love it when a product is no frills and delivers as advertised. I've used various filters from K&N before and have always had very good success with them so I will be buying more of these for sure when the time comes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
J
Verified Purchase
john A.
Grantham, US
★★★★★ 5
Better than most.
Size: (Pack of 1)
Looks good, perfect fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
W
Verified Purchase
Willy Bill
Bozeman, US
★★★★★ 5
Great Filter
Size: (Pack of 1)
This fits fine. Just wish it was a little easier to change.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
E
Verified Purchase
em
Cuba, US
★★★★★ 5
More power, slightly lower (8%) MPG.
Size: (Pack of 1)
Installed on a 2.0 liter Subaru Impreza. I drive up/down the I5 in california 3-4 times a year. For those that don't know there is about a 200 mile flat stretch where everyone runs at 75-85mph. With various filters (FRAM, BOSCH, Subaru OEM), I would consistently get 29.8 mpg. Once I installed the K&N, I could feel the car pulling with a bit more power, but I noticed that I was getting about 27.5 mpg. Totally worth it as the impreza is a little under powered and I don't drive many miles (6k/year) but if you are putting a lot of miles on your car, you may want to have more mpg.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
G
Verified Purchase
GregUPerkio
Port Orchard, US
★★★★★ 5
fits my 2013 chevy suburban 5.3 and appears to be high quality
Size: (Pack of 1)
fits my 2013 suburban perfectly. looks to be a well constructed unit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026

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