BMW N55/S55 Direct Injectors

The Precision Raceworks N55/S55 Upgraded DI Injectors are designed for customers looking to push the limits without port injection (or in addition to port injection).  Our high flow injectors were developed in a partnership with NHP, taking advantage of resources offered by both companies to produce the highest quality and highest flowing direct injector upgrade ever for the N55 engine.

These high flow injectors flow 55% over stock!  This means that these can support up to *950 whp on gasoline or *715 whp on E85 without PI!

Each injector is tested and calibrated using state of the art high pressure flow calibration equipment and then matched to a set of 6.  

Installation of these is a snap and is as simple as replacing your injectors, a little coding, and then checking a checkbox!  You can make installation even easier with our Direct Injector tool!

Can I run E85?  Of course!  Just like all other Precision Raceworks products our direct injectors are compatible with E85 and all other fuels as well!

Is it supported by tuners?  Absolutely!  The Precision Raceworks stage 2 direct injectors are supported by MHD, Bootmod3, Ecutek, and others.  If you need help beyond that just give us a shout and we will get you fixed up!

***Only works with cars with factory electronic wastegate***

* whp is a theoretical based on overall capability of injectors and with a fully built system and all supporting mods. 

The items installed or applied to vehicles are intended strictly for off-road use only and track vehicles. These modifications may not comply with emissions, safety, or environmental regulations required for public road use under Environmental Regulatory Agency (ERA) laws. It is the sole responsibility of the vehicle owner or operator to ensure adherence to all applicable local, state, and federal regulations. Use on public roads may result in legal penalties or vehicle impoundment. Always verify compliance with local authorities before installation.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

If you're unsure whether a part will fit your vehicle, feel free to contact us here with your inquiry. Our helpful sales team will reach out to confirm if it's the right match for you.

We offer a flat-rate shipping fee across the continental United States. This excludes Alaska, Hawaii, and U.S. territories. For international orders, additional shipping costs will apply. Please contact us for a quote if you are outside the continental U.S.

Also, feel free to also contact us at ColoradoN5X@Gmail.Com for any other questions.

Not all items are covered by warranty. Items including warranty, will clearly state that there is warranty within the product description. Most of these items will be a standard 1-year warranty against manufacture defects. You, the customer, will be responsible for shipping and handling. We will fix/replace that item with a product that is in working condition if you meet the warranty criteria. Please note that you will be allowed ONLY 1 claim within the year for that product. ColoradoN5X is not responsible for any damage caused during the installation of our products.