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Nitrous Express

Nitrous Express - 4150 RNC Conventional Plate System w/ .375" Solenoid w/ 15lb Bottle - 55140-15

$1,871.33

SKU: N004 55140-15

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Overview

Designed for professional racers limited by jet size, this RNC (Restricted Nitrous Class) system features a CNC billet nitrous plate with enlarged passages, a .375" orifice Lightning nitrous solenoid, 8AN feed line, and a .500" orifice Lightning 500 bottle valve. This combination creates a dense liquid nitrous charge, maximizing flow through specific jet sizes. NX guarantees superior power per jet size compared to other systems.
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Part #: 55140-15

The 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 .375 in. orifice Lightning nitrous solenoid, 8an feed line and a .500 orifice Lightning 500 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 certain size jet. Results of these RNC systems are so impressive that you will have to use one to believe it. Nitrous Express RNC (restricted class nitrous) systems are guaranteed to make the most power per jet size of any system on the market. If you dont make the most horsepower or are not 100% satisfied, NX will gladly refund you 100%.

4150 RNC Conventional Plate System w/.375in. Solenoid w/15lb Bottle

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandNitrous Express
Part NumberN004 55140-15

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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