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Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoids/.177 Fuel Solenoids/Dual Passage Injection Rail/90 Degree Discharge Nozzles (Alcohol)(5-7-10 psi)(50-250HP)(15lb Bottle)

Marsoni M251S
Sale price$726.50
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Nitrous Outlet 4 Cylinder Direct Port System - .122 Nitrous Solenoids/.177 Fuel Solenoids/Dual Passage Injection Rail/90 Degree Discharge Nozzles (Alcohol)(5-7-10 psi)(50-250HP)(15lb Bottle)Low Fuel Pressure (5 7 10 PSI) Flow Up To 400HP Four Cylinder Wet System Single Untapped Injection Rail Single Stage All Hardware, Fittings and Accessories Included Includes Jetting For 50 100 150 200 250HP High Horsepower. Nitrous Outlet's 4 cylinder direct port systems are designed to be high flowing for high horsepower applications. This system comes with one 90 degree wet nozzle per cylinder capable of flowing 200 HP each. High Quality
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 1414 reviews
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Product Reviews
A
Verified Purchase
Amanda Burns
Grantham, US
★★★★★ 5
Caution can cause addiction
Style: Sport, Size: 12in
My dog has become addicted to tennis balls because of this! She sees the blue handle and she immediately loses her mind! I love it because I don't have to bend down as far to pick up the ball, which is amazing after 2 back surgeries.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
S
Verified Purchase
Sandy
Charlottesville, US
★★★★★ 3
12 " too short, no direction.
Style: Sport, Size: 12in
I got the twelve inch handle. It is too short and does not flex enough to release ball in right direction. Its almost impossible to aim and doesn't sent the ball far enough.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
A
Verified Purchase
Anthony Marcetti
Grantham, US
★★★★★ 5
Excellent balls
Color: 12 Tennis Ball, Color: 12 Tennis Ball
Good size and keeps my senior dog active. Very durable and they squeak
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
B
Verified Purchase
Beverly Elkins
Port Orchard, US
★★★★★ 5
Great toy my dog loves!
Color: 12 Tennis Ball
My dachshund, Winston, loves these balls because they squeak and of coarse it’s a ball. Only thing is he is destructive and the squeaker doesn’t last long but by far his favorite toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2023
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 4
Balls need to squeak out of the box
Color: 12 Tennis Ball
The squeaky ball lights up the faces of my dog shelter furiends, they love to fetch and chew the ball to make it squeaky. I have been buying these balls for about a year now. They don’t last long with some of the dogs, but the joy is worth the price. Lately some of the balls do not squeak right out of the box but many of the balls are fine. Returning the box doesn’t make sense because I used some already so I thought I would comment, dropping one star so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2025

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