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Nitrous Express 4150 Covert Crossbar Plate System Stage 6 50-300HP (5lb Bottle)

Marsoni M251S
Sale price$567.99
Pay 4 payments of $142.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Express 4150 Covert Crossbar Plate System Stage 6 50-300HP (5lb Bottle)Nitrous Express. Injection System The new NX Covert Crossbar nitrous plate systems have just raised the bar in nitrous plate technology. The CNC machined design eliminates round spray bars resulting in excellent atomization and cylinder distribution. With no spray bars to sag rotate or disrupt airflow this is truly the Next Generation in cross bar nitrous plate technology. This system includes a 15lb nitrous bottle with the billet aluminum Lightning
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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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4.7 ★★★★★
Based on 300 reviews
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Gary0529
Los Angeles, US
★★★★★ 5
It works!
Size: 16 Fl Oz (Pack of 1), Style: Individual
A short story long---LOL---My zero turn started acting quirky-it would not run at full power and would begin to stall when put under a full load - like trying to mow some taller or thicker grass- never did stall since I would immediately kill the mower but obviously it was not right. I checked and changed the fuel filters-this one has 2 . One in the pick up line in the tank and one is inline just before the fuel pump unit. No help! So, before I dropped the big bucks to have the local farm dealer come and pick it up (at $75 per pickup and return) plus h=whatever shop charges that would result I thought "What the heck, lets give this stuff a try" I gambled $6 . I put in 5 ounces for the 5 gallons tank, and filled it with the gas I had on hand- should have been relatively fresh gas -no more than 2 weeks since pumped . Well, whatever the cause of the issue within about 15 to 30 minutes of low speed running- mostly at idle - the engine seemed to be idling smoothly as opposed to before where it surged but never died, I gave it a try at mowing. YEA!!!! full power and no bogging down - I finished mowing the yard and a part of the pasture (not yet grown up much so it is not requiring the rotary cutter YET) My only guess is perhaps a batch of either old gas or some water in the gas can or mower tank but whatever the cause it fixed it --and all for $6.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2025
N
Verified Purchase
Nancy McKenzie
Lake Worth, US
★★★★★ 5
Convenient to order from Amazon
Size: 16 Fl Oz (Pack of 1), Style: Individual
Works as expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026
T
Verified Purchase
Tommy Domino
Fort Morgan, US
★★★★★ 4
Good product
Size: 16 Fl Oz (Pack of 1), Style: Individual
Works well for my lawnmower. It's running better after first time using.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
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Verified Purchase
HOWARD J ALLEN
Port Orchard, US
★★★★★ 5
Fuel stabilizer
Size: 16 Fl Oz (Pack of 1), Style: Individual
Great additive
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
R
Verified Purchase
Rusted Junk Garage
Los Angeles, US
★★★★★ 5
Keeps the lawn equipment happy.
Size: 16 Fl Oz (Pack of 1), Style: Individual
I use this product in my lawn equipment to keep the carburetors clean.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025

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