Nitrous Express 4150 Gasoline (RNC) Nitrous Kit w/10lb Bottle

Nitrous Express 4150 Gasoline (RNC) Nitrous Kit w/10lb Bottle

Marsoni

M251S

$734.50

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

Nitrous Express 4150 Gasoline (RNC) Nitrous Kit w/10lb BottleThe conventional RNC (Restricted Nitrous Class) systems are the first choice for professional racers that are limited by jet size. These systems feature a CNC billet nitrous plate with enlarged nitrous passages, a . 250 orifice Lightning 250 nitrous solenoid, 8an feed line and a . 500 orifice DF5 bottle valve. The combination of these components results in a very dense liquid nitrous charge which allows the maximum amount of nitrous flow through a

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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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This relay has experienced failure again after just a couple of months of use. It's not the mag coil that fails but rather the contacts are of such low quality that they corrode beyond their ability to conduct power, and fast. I have had to change two of these so far and am on the third one. The seller will ship replacements but who wants to keep replacing them? I have to travel in my RV with a spare. This relay has never been exposed to the elements. It's safely mounted inside a sealed bay. Be aware of any brands that look like this, they are all the same.

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Reviewed in the United States on November 15, 2025

Verified Purchase

Dave Kulina

Fort Morgan, US

★★★★★ 5

Works great

I added extra batteries to run a truck camper without killing my main battery and this works great. Simple to install and i have no had any problems in the pay few months and i use it every single day

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Reviewed in the United States on April 18, 2021

Verified Purchase

Amazon Customer

San Leandro, US

★★★★★ 5

Installed in my RV.

This product works well. It is somewhat difficult to mount. The contact points are a little too close together. These deficiencies are understandable given its low cost and small size.

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Reviewed in the United States on January 18, 2021

Verified Purchase

Bret Jackson

Belleville, US

★★★★★ 5

Best main wire for price

Size: 25 FT, Style: 0 (1/0) AWG RED

Good main wire and is accurate size and length

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Reviewed in the United States on May 18, 2026

Verified Purchase