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

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

Marsoni

M251S

$574.62

Get it in 3 business days with 1 day shipping. Friday, May 29

Nitrous Express 4150 Assassin Plate Stage 6 Nitrous Kit (50-300HP) w/10lb BottleAssassinate 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, particularly small and big block Fords.

Easy Shipping

Quick Dispatch:

Your Nitrous Express 4150 Assassin Plate Stage 6 Nitrous Kit (50-300HP) w/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 Nitrous Kit (50-300HP) w/10lb Bottle ships.

Need Help?
Questions about Nitrous Express 4150 Assassin Plate Stage 6 Nitrous Kit (50-300HP) w/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 Nitrous Kit (50-300HP) w/10lb Bottle in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

I bought these shoes for my daughter to wear to kindergarten. They wear navy uniforms and she loves pink so I thought these were perfect. I ordered her size according to the size chart (but didn’t check width because she’s never needed wide shoes in the past). The normal width were too tight on her toes but the length was right. I returned them for the wide and they are perfect. 2 months into school they still look brand new. Just be sure to check both length and width. I printed a measuring guide from Saucony’s website.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 4, 2021

Verified Purchase

RJS

Houston, US

★★★★★ 5

Nice, Tough & Comfortable!

Size: 6.5 Wide Big Kid, Color: Black

Bought as an everyday school shoe for my 10 year old son. He likes them a lot and is holding up great through rough boy play, and they still look good after a couple months now.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 20, 2026

Verified Purchase

Peri Nikolas

Belleville, US

★★★★★ 5

Great

Size: 4.5 Big Kid, Color: Pink/Purple

perfect

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 12, 2026

Verified Purchase

FLbookworm22

Lowell, US

★★★★★ 5

Pink and purple perfection

Size: 13 Little Kid, Color: Pink/Purple, Size: 13 Little Kid, Color: Pink/Purple

Fits great and perfect colors for my (not so) little. This is her first pair of "tie" shoes so we're still learning, but the laces are a good length for teaching and practicing. She says they're very comfortable too.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 27, 2026