Login
Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle)
Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle)
Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle)
 Next

Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle)

Marsoni M251S
Sale price$624.62
Pay 4 payments of $156.16 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle)Nitrous Express. N2O Injector Plate Assassinate 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
Easy Shipping

Quick Dispatch:

Your Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle) orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle) ships.

Need Help?
Questions about Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle), sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (10lb Bottle) in your area.

Get Shipping Estimates

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
4.5 ★★★★★
Based on 2436 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Martin Walyor
Alexandria, US
★★★★★ 5
Fantastic product
Size: 8 Fl Oz (Pack of 1)
Works Great, at first didn't believe all the reviews, I've bought 5 chainsaws from one season to the next. After each winter couldn't get them to start. Followed the instructions to flush and let sit for a few days. Every one started and ran great. Hands down, this is a remarkable product for cleaning out blocked fuel systems from sitting all winter would recommend it for all 2 cycle engines and use the stable blend for winter as well as anytime use to prevent fuel spoilage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
W
Verified Purchase
Wayland Efird
Lexington, US
★★★★★ 5
Efird, a great product
Size: 8 Fl Oz (Pack of 1)
Used this in a Troy Built Garden Tiller, the tiller would stall and hard to crank until we use the Sta Bil Fast Fix, tiller now runs great and does not stall.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
A
Verified Purchase
Amazon Customer
Dallas, US
★★★★★ 5
Worked great, saved me hundreds.
Size: 8 Fl Oz (Pack of 1)
I've had issues with the carburetor on my 2003 Honda ATV for years. It has needed cleaned regularly to stay running, and one repair shop wanted over $400 to replace the carburetor. One treatment with STA-BIL and it's running smooth again. Very impressive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
C
Verified Purchase
Chris Wildy
Phoenix, US
★★★★★ 4
Great for 2 cycle, meh for 4 cycle.
Size: 8 Fl Oz (Pack of 1)
This stuff is flat out amazing for 2 cycle small engines, works like advertised. 4 cycle isn't as good, if your engine hasn't ran in years, you'll still have to clean the carb, but it does help some. The 2 cycle oil for one is a lubricant and inhibits varnish buildup (especially a synthetic premium brand), and usually premium oil has a fuel stabilizer in it. Plus if you don't have a float bowl, there's not enough fuel for phase separation. I also use it in my mix for my ultrasonic cleaner when cleaning carbs. Overall a very good product, but understand it's limitations in this modern age of ethanal fuel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
G
Verified Purchase
G123
Whiting, US
★★★★★ 5
It works well.
Size: 8 Fl Oz (Pack of 1)
Great product that delivers on what it says it does. This won’t fix a mechanical problem or damaged component, but it will fix a stuck float, varnished tank, gummed up jet, or partially blocked emulsion tube.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026

recommand products

Rotary Shaft Oil Seal 25mm x 52mm x 10mm (TC) - Nitrile/Carbon Steel
Rotary Shaft Oil Seal 25mm x 52mm x 10mm (TC) - Nitrile/Carbon Steel
14.29
 Rotary Shaft Oil Seal 26mm x 38mm x 7mm (TC) - Nitrile/Carbon Steel
Rotary Shaft Oil Seal 26mm x 38mm x 7mm (TC) - Nitrile/Carbon Steel
11.18
 14K Yellow Gold Round 1.7 Mm Polished 1/2 Ctw Natural Diamond Anniversary Band Size 7
14K Yellow Gold Round 1.7 Mm Polished 1/2 Ctw Natural Diamond Anniversary Band Size 7
593.11
 Rotary Shaft Oil Seal 25mm x 42mm x 8mm (TC) - Nitrile/Carbon Steel
Rotary Shaft Oil Seal 25mm x 42mm x 8mm (TC) - Nitrile/Carbon Steel
11.69
 Rotary Shaft Oil Seal 26mm x 52mm x 7mm (TC) - Nitrile/Carbon Steel
Rotary Shaft Oil Seal 26mm x 52mm x 7mm (TC) - Nitrile/Carbon Steel
14.78