Nitrous Express Proton Plus Jet Pack

Marsoni

M251S

$61.93

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

Nitrous Express Proton Plus Jet PackNX Jets are manufactured on CNC equipment, and are guaranteed to be within . 0005 of specified jet size. In recent testing, using the same jet size, NX jets out flowed the competition by 35%! That's right 35% more flow through the same orifice, how you ask? The NX jet was designed to be more than just a hole in a piece of brass; its contoured inlet and multi stepped outlet allow turbulence free flow with no restrictions. Certificate of Origin Warranty

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Fast: 2-3 business days
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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.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Bought exactly 1 year ago for 3rd Gen Tundra. So far, it really does the job. At first I didn’t realize how awesome it was until I had to remove and clean it yesterday. Although I keep my truck immaculate inside and out, after 1 years use, the filter had become extremely filthy and the air had an old mildew, vomit, stank smell. When clean and set for fresh air, I can only faintly notice diesel exhaust smells from those in front of me. I also notice little to no dust accumulation on my dash and flat surfaces. In my opinion the K&N cabin filter kit is an essential tool for cleaning this filter. K&N made the filter, so I would imagine that they know how to clean and refresh it properly. By the way, refresh solution is nearly fragrance free. I bought the refresh kit at a big box auto supply and it came in a mostly black box instead of the white box as sold on here. Don’t know if that means the formulation has changed or not.

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Reviewed in the United States on March 2, 2025

Verified Purchase

Blake

Carnegie, US

★★★★★ 5

Like A Glove

Size: 1" x 1" x 1"

Perfect fit for ‘26 Tundra.

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Reviewed in the United States on May 22, 2026

Verified Purchase

Brady

Boise, US

★★★★★ 1

Wrong size for Toyota tundra 2023

Size: 1" x 1" x 1"

Bought for 2023 Toyota tundra & it doesn’t fit. Completely wrong size.

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Reviewed in the United States on March 23, 2026

Verified Purchase

Izzy

Battle Creek, US

★★★★★ 5

Great quality and performance

Size: 1" x 1" x 1"

The quality of the filter is great and it is easy to installed in your car. Also, it helps to improve the performance of your vehicle, keep clean air flowing and avoid bad smells. What I love about it it’s the option to washed it and reuse it over an over.

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Reviewed in the United States on July 24, 2025