SKU: 52887168301
boost box n54

boost box n54 BMW 335i 135i N54 Top Mount Single Precision Turbo Kit – DOCRace

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Description

boost box n54 BMW 335i 135i N54 Top Mount Single Precision Turbo Kit – DOCRaceClick here to expedite your build! Current lead time on PTE is 4 weeks. If you can not wait 4 weeks please do not place an order! *** Billing and shipping address must match when checking out or orders WILL be canceled. Stainless steal braided oil drain line now included. Fits RWD models only. Please do not ask us if we would make a kit for AWD. Please note you will receive 2 packages. Please do not be alarmed if you do not see your turbo in the box.

Click here to expedite your build!

Current lead time on PTE is 4 weeks.  If you can not wait 4 weeks please do not place an order!

***  Billing and shipping address must match when checking out or orders WILL be canceled.  

Stainless steal braided oil drain line now included.

Fits RWD models only.  Please do not ask us if we would make a kit for AWD.  

Please note you will receive 2 packages.  Please do not be alarmed if you do not see your turbo in the box.  Your turbo will be shipped to you directly from Precision Turbo and they normally take anywhere from 2-4 weeks to ship.  If you would like an accurate lead time please email us. 

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 Turbosmart 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

 

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 52887168301

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4.8 ★★★★★
Based on 17 reviews
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R
R. Moheban
Omaha, US
★★★★★ 5
Robust pipe & fittings with a beautiful, smooth black finish
Size: side table leg
This set of pipe & fittings for use as low table legs is heavy duty and aesthetically pleasing. Especially when the pieces are handled, the tactile sensation is much nicer than with plumbing steel pipe because this product is beautifully finished smooth. The black pipes are quite smooth as well as the fittings. The pieces are all also pretty robust, though the wall thicknesses are less than in pipe for pressurized water systems. Of course that makes sense as this product does not need to hold fluid pressure. In my view they got the heaviness factor of this product just right; it's not as heavy or robust as black pipe used in natural gas supplies, but still robust and pretty heavy. Assembled, this product is absolutely stiff and unyielding for a solid table that could hold a man's weight easily. The feet utilize a brilliant scheme so that each foot can be independently adjusted for an uneven floor. Thus a level table on an uneven floor is easily accomplished. The feet simply extend the effective leg length by screwing counter-clockwise. To prevent any shifting at the threads adding some pipe compound or teflon tape may be advised. Even masking or duct tape might work as the idea is to just fill any gaps where male threads meet female threads. The four flanges at the tops of the legs provide a wide, solid surface for attaching the table top, with either hidden screws underneath or you could through-bolt a glass table top (provided you have the skill to drill glass!). I think this product would look great with a glass top. Assembly is quick and easy. The hardest part is drilling holes underneath the table top to accept screws. No pipe wrenches are needed as the pieces screw together by hand to an adequate tightness. If any doubt whether they are tightened enough have a strong person with grippy gloves finish. The "X" in the center attaches to the legs with a very clever machine screw system tightened with the included hex wrench. This is presumably because if tightened simply by screwing the fittings, the point of snugness would not likely be where the "T" fittings are exactly vertical. The maker has solved this problem so that you are assured that all legs will be in the perfect vertical position once everything is tight. The setup is also nice and rigid once tightened. This is a huge benefit of steel pipe projects; they are really solid. The black finish is clearly very durable, like a powder coat. It appears that it will provide excellent protection against rust. Coverage is complete; I found no dings or scratches anywhere on any piece. Overall this is a very well-designed product for function and aesthetics. Perfect for a beautifully renovated warehouse condo where an industrial vibe is desired in a rock-solid table that won't shift around. The smoothness of the pipe is top notch. I've used lots of pipe in projects, some of it actual water pipe and some decorative pipe such as this. I've never seen better quality decorative pipe as this maker put in the effort to finish it beautifully smooth. At currently $34.99 I find the price quite reasonable too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
P
Verified Purchase
patricia
Grantham, US
★★★★★ 3
the height is only 16"
Size: coffee table leg
The height is only 16". From the description it appears to be 24" wide and 24" high.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
C
CMC20
Los Angeles, US
★★★★★ 4
Good DIY Pipe Legs but Powder Coat Quality Lacks
Size: side table leg, Size: side table leg
These industrial style pipe legs make building a DIY end table easy and the kit saves a trip to the hardware store. The fittings go together normally and assembly is simple. Comes individually wrapped. My main issue is the powder coating looks and feels cheap and rubs off easily. The pipes already had marks from touching each other from unboxing. If you do not mind some wear on the finish over time this is a decent purchase. The metal at the hardware store will be thicker and more durable but will cost more. I’d recommend based on ease of having a kit and it being delivered saving me a trip.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
M
Mark Weinberg
Fort Morgan, US
★★★★★ 5
Stable, attractive, and easy to turn into a table with your choice of top
Size: side table leg
The X-shape of the table legs - constructed with solid metal flanges, T-joints, X-joints and 1-inch diameter pipes - provides a strong and sturdy base for a wood top. The legs have adjustable feet pads to prevent scratches and ensure stability. Assembly of the legs is relatively simple (the instructions are clear) but you will need your own tools to attach a top. The industrial design is especially well suited to rec room or finished basement use. I am adding a 28" diameter raw edge slab of wood from a recently felled tree as the top and it is very attractive. (Photo unavailable because after I made certain it would work I sent the slab out for drying and finishing.) If you want a custom table and have a particular piece of wood you want to use, these legs are an excellent choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
G
Grammar Guru
Massapequa, US
★★★★★ 5
Very nice kit: Beware it is NOT heavy duty plumbing pipe though!
Size: side table leg
I want to give this kit a high rating, but I need to address the "truth in advertising" bit since there may be an important disconnect between what you think you are getting and what actually comes in the box. Black plumbing used for shelving or table legs is part of an important niche in interior design. I like the industrial loft look myself and have a variety of glass, steel, and masonry elements in my home. This kit fits that look and provides plenty of "strength" for most domestic uses, like shelves or coffee tables. But they are NOT "industrial pipe" or "maximum durability pipe." Note the phrase "cast iron finish feet," which together with the other claims might lead you to think these are cast plumbing fittings. They are NOT! The feet and flanges feel like electrical conduit fittings, and the pipe sections are likely aluminum. They might be electrical or they might be multi-use, lightweight pipe. While all this might lead you to think that you're getting a truly retro, heavy-duty pipe kit made of black plumbing pipe, you are not. But, does it matter? Depends. I find the lighter pipe's smooth finish a nice "tone-down" from the rough plumbing look. All together, this kit provides plenty of strength for most furniture and the rustic pipe look, but with a nicer, lighter finish. To me that is a plus--this is a very nice kit and costs less that if you'd pieced it together from real plumbing parts (I priced it out to compare), and looks retro but cleaner. I knew what to expect because while I got this kit free on Vine, I had purchased a nearly identical kit from another seller last year. So, I'm giving it 5 stars for what it actually is and for the price, JUST BE AWARE THE NARRATIVE IS MISLEADING. Which is unfortunate because just like some people might want the heavier pipe, I'm betting more would be attracted to the look with a cleaner, lighter feel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 31, 2025

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