SKU: 91444609241
boost box n54

boost box n54 BMW N54 135 335 Turbo Kit

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Description

boost box n54 BMW N54 135 335 Turbo KitThe DOC Race turbo kit is the ultimate turbo kit for your street machine! They come complete with all necessary hardware to install and is listed below. The kits come with Precision turbos because they are leaders in the industry for offering top performing products that are reliable so you can make good power and not have to service your turbo for years to come. You can choose from your choice of a 5862 up to a 6870 with horsepower ratings from 640hp

The DOC Race turbo kit is the ultimate turbo kit for your street machine!  They come complete with all necessary hardware to install and is listed below.  The kits come with Precision turbos because they are leaders in the industry for offering top performing products that are reliable so you can make good power and not have to service your turbo for years to come.  You can choose from your choice of a 5862 up to a 6870 with horsepower ratings from 640hp up to 1100hp (ratings below). 

Included is a T4 twin scroll manifold which is the heart of this turbo kit.  Our manifold has been redesigned (9/20) to now be a one piece design for ease of installation.  It was put to the test by a handful of very high performing race cars before attempting to fit to our test car.  With the design it is capable of producing well beyond 1000hp for anyone looking to really push the limits of this platform.  To control all of this, boost is regulated by a pair of Turbo smart 40mm wastegates which are mounted down low and out of the way of heat.  The wastegates can be accessed easily without taking out any hot exhaust parts.  This will come in handy if you ever need to change springs in your wastegates on the dyne or after hard runs.  

Boost is fed to the intercooler by a single 2.5" aluminum charge pipe.  The downpipe is made of 3" stainless tubing in two pieces which is V-Band and connects to your factory or any aftermarket exhaust that accepts factory gaskets.  

5862 GEN2 CEA- 640HP
6062 GEN2 CEA- 750HP
6266 GEN2 CEA- 800HP
6466 GEN2 CEA- 900HP
6766 CEA- 935HP
6870 GEN2 CEA- 1100HP

 * Factory fuel injectors will support upwards of 550hp.  It is advised to use an aftermarket port injection system when going beyond that level.  We suggest an AD-Engineering port injection kit which include additional fuel injectors to support the power level this turbo kit is capable of.  This is the system we run on the DOC Race car and is driven daily without any sort of stalling.

* As of 9/20 our kits come with the most updated O2 placement to help with burning out O2 sensors.  

 Parts list:

Precision Turbo, (2) Turbosmart Comp40 wastegates (comes with 14psi springs), DOC Race Stainless Multi-Piece V-Band Manifold, 3" Stainless Upper Downpipe, 3" Lower Downpipe (connects to factory location exhaust), V-Band Clamps, (2) Stainless Dump Tubes, 2.5" Aluminum Intercooler Charge Pipe, 2.5" Silicone Couplers / Clamps, 4" Shorty Filter, 5/8" Oil Drain Line Hose, Heat shield, T4 Turbo Gasket, (6) OEM Style Doughnut Gaskets, (4) 10x1.25 Studs / Nuts, -4an Oil Feed Line Kit, Coolant Block Offs & Oil Feed Adapter Fitting, CNC Coolant Pipe / Hardware, Coolant Tank Relocation Bracket, Coolant Hose To Waterpump / Hose Clamps, 5/8" Silicone Hose To Coolant Tank / 5/8" Barb Fittings / Hose Clamps, Nuts / Bolts, 10 ft Silicone Vacuum Hose, (3) Vaccuum Tees, DOC Race Turbo Blanket

FAQ:

Does the kit come with a MAC solenoid?

  • No the kit does not come with a MAC solenoid and is not required for an install.  It is only required when you are wanting to change boost settings with a tuning device such as JB4 or Motiv boost box.

Is it required to remove the subframe to install the kit?

  • It is not required to remove the subframe to install the kit.  For our one piece design manifold you will need to lift the motor approximately 2" and install the manifold from up top. 

What other things should I plan on purchasing when installing your kit?

As with any build you should think about the supporting mods required for your individual power goals. Supporting intercooler, chargepipe/BOV Combo, Fueling, Clutch, Tuning Software MHD/JB4, established tuner and if you're smart.. fresh brakes, tires and any needed maintenance. The 2 items below are what we suggest you replace as preventative maintenance. 

  • 2 x BMW OEM 2 Bolt Exhaust Gaskets - 18307553603
  • 1 x BMW Coolant Pipe O-Ring  - 11537545302

    Stainless steal braided oil drain line now included.

Fits RWD models only

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 91444609241

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wes
Pawtucket, US
★★★★★ 5
Simple installation
Size: 16inch, Color: 2 Sets
Super easy to put together and came just as it said it would and the directions were very thorough and simple!
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Reviewed in the United States on February 1, 2026
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Paula Ricketts
New York, US
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Super cute!
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Very nice for our coffee nook and sturdy too!
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Reviewed in the United States on January 28, 2026
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Violeta Mendez
Battle Creek, US
★★★★★ 4
Nice decor for a coffee station
Size: 16inch, Color: 1 Set
I returned this item because it was too big for the area I needed it for. The shelf is a less sturdy than I expected, I think it would hold cups and accessories. It was a nice size and would do well in any coffee station.
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Reviewed in the United States on May 3, 2025
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Rebecca M. O'Brien
Charlottesville, US
★★★★★ 5
Problems solved quickly
Size: 16inch, Color: 2 Sets
I ordered this shelving unit because I love the way it looks and it fit the space it's intended for perfectly. When it arrived it looked exactly as described. So happy, then I discovered no hardware. Dread. Memorial Day weekend, 11pm. I took a chance and got ahold of Amazon. Within 30 minutes they instructed me on how to get ahold of the manufacturer. And by the time I went to bed at 6am the manufacturer was working on a plan to get me the parts needed. Originally it was going to take a month to get the parts sent from China, but they came up with a better solution. Not only do I have the parts that were missing but I received them two days ago. Delivery was expected today the 5th. I decided to give 5 stars because initially yes I was upset, but they did their due diligence to make sure I received what was ordered and in a timely manner.
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Reviewed in the United States on June 5, 2025
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Amazon Customer
Draper, US
★★★★★ 5
Holds a Lot!
Size: 16inch, Color: 2 Sets
These shelves hold a good bit of smaller items and I love that cups can hang from the hooks. The shelf is real wood and a lovely stain. I wish the baskets didn't come all the way out, but sometimes that's more handy than fishing around inside them while they're in place. I bought four of these shelving units (they're packaged as two) to hang together as a group on a kitchen wall over my coffee station. They make quite an impression when grouped together. Although these shelving units are not large, they are big enough and the shelf is deep enough to hold things of substance. A great way to organize an area and make it look neat.
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Reviewed in the United States on January 6, 2025

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