SKU: 31257855976
n54 boost box

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

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Description

n54 boost box 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: 31257855976

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4.5 ★★★★★
Based on 26 reviews
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R
Verified Purchase
R L
Natrona Heights, US
★★★★★ 4
Review of product 9-20-24
Size: 6 Outlet
Have yet to use the product however writing a placeholder reveiw for now. I spent nearly an hour or maybe more looking at sooooo many surge protector/power strips at least 100 on 8 different websites and let me tell you.. not sure on quality but OMG good luck on trying to find a high joules this one being 3300J that also has individual off and on switches and be heavy duty at this price point.. nothing to do with price point even they simply don't make them.. this is the legit only one.. the rest were low joules around 1200J did not have individual switches, or were not heavy duty. So If I wanted all of these things this was the product I had to choose from. That being said this does look like a decent quality item that will actually last me several years possibly my lifetime. I prefer to buy quality products that actually work as intended for a minimum of 10 years of quality service life regardless of what product I am buying. 10 years of quality service life is a reasonable standard for products that would potentially see daily use. the standard for those that might not know used to be 100 years of quality service which was most people's lifetime on all products regardless of what they were, however the whole. History lesson for those that don't know about manufacturing goods. Planned obsolescence is In economics and industrial design, planned obsolescence (also called built-in obsolescence or premature obsolescence) is the concept of policies planning or designing a product with an artificially limited useful life or a purposely frail design, so that it becomes obsolete after a certain predetermined period of time upon which it decrementally functions or suddenly ceases to function, or might be perceived as unfashionable. I like to call out products and companies that are not making quality goods and also causing world pollution, to further decrease from 100 years quality standard to 10 years and companies still have problems meeting my lowered standard of 10 years is insane to me that people let themself be used like this, and end up supporting these terribly manufactured goods. These low quality goods end up contributing to world pollution on a massive scale over the years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2024
C
Verified Purchase
Christopher Flynn
Draper, US
★★★★★ 5
Great for my workshop
Size: 10 Outlet
So I love these long strips. There's a few companies that make these but when I saw the individual power switches on this for each outlet, I thought this would be great for my workshop desk. Now I can know for sure that the power is off to a particular device and I don't have to go plugging in and unplugging to be safe. Just hit the switch. I also like that there are plenty of outlets so I don't have to unplug something just to plug something else in. I don't often use all the devices at the same time so this works out perfectly for me.
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Reviewed in the United States on March 20, 2026
C
Verified Purchase
Christopher Campbell
Natrona Heights, US
★★★★★ 5
I need more of these
Size: 6FT, Style: 1 Pack
I recently picked up the HHSOET Rotating Mountable Power Strip to tame the chaos of cords in my home office, and I’ve got to say, it’s been a fantastic addition. With 12 outlets, a sleek black metal design, and a clever rotating feature, this thing delivers both function and style in spades. Right out of the box, the build quality impressed me. The all-metal construction feels rugged and durable—definitely a step above those flimsy plastic power strips I’ve used in the past. It’s got a solid heft to it, which gives me confidence it’ll hold up under daily use, whether I’m plugging in my laptop, monitors, or a slew of chargers. The black finish adds a stylish touch, blending seamlessly with my setup instead of sticking out like an eyesore. The standout feature for me is the 360-degree rotating design. I mounted it under my desk using the included screws (super easy install, by the way), and being able to swivel the outlets to the perfect angle made cable management a breeze. Whether I needed the plugs facing forward for easy access or tucked back to keep things tidy, this power strip adapted effortlessly. It’s such a smart touch for a versatile setup—great for everything from a gaming rig to a workshop bench. With 12 outlets, I’ve got more than enough space for all my gear. The spacing isn’t super wide, so bulky adapters might block neighboring slots, but I managed to fit my essentials without too much hassle. The 6-foot power cord is a nice length—long enough to reach my wall outlet without needing an extension, but not so long that it’s a tangled mess. Plus, the built-in 1200-joule surge protector gives me peace of mind, knowing my pricey electronics are safe from power spikes. The on/off switch is another handy perk. It’s got a satisfying click and a light to show when it’s powered, making it easy to cut power to everything at once without unplugging a single cord. I’ve found it especially useful for saving energy when I’m done for the day. There are a couple of small quirks. The outlets are a bit close together, so if you’ve got a lot of oversized plugs, you might not use all 12 spots. Also, while the metal body looks great, it’s a fingerprint magnet—nothing a quick wipe won’t fix, though. Mounting was straightforward, but I’d recommend double-checking your surface; the included screws worked fine on wood, but drywall might need anchors. All in all, the HHSOET Rotating Mountable Power Strip is a sturdy, stylish, and versatile solution for anyone juggling multiple devices. It’s transformed my cluttered desk into a clean, organized workspace. If you’re looking for a heavy-duty power strip that doesn’t compromise on looks or utility, this one’s a winner.
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Reviewed in the United States on March 18, 2025
D
Verified Purchase
David Pierce
Chelsea, US
★★★★★ 5
Good power strip for under-desk mount.
Size: 6FT, Style: 1 Pack
Affordable power strip. 12 plugs. Good build quality. It says "Surge Protector" in the product description, but without actually taking it apart, I don't actually think there's a surge protector or anything built in - there's no breaker/reset button, which is usually the giveaway for that. Also, no USB charge ports or any extras like that. The plugs aren't only spaced the normal width apart - you won't get many wall-wart style power supplies connected with this. That should be obvious from the product images but I figured I'd mention it. You can get little 8-12" pigtail M/F power cables for cheap that address that problem, though. Easy to attach to underside of desk with included brackets. They're through-hole, not that weird slot/key thing, which is a plus, IMHO. (The last power strip had used those, and after it fell off a few times, I jut gave up and it lived on the floor. This won't do that.) The brackets are visible in the produce images, but come screwed on in reverse - you have to unscrew and flip them before you have the tabs to attach things. I assume that's what "rotating" means in the product description. It makes sense - the product package can be a couple inches shorter and most people presumably don't use the clips anyway. I just think it's great they're there if you need them. Getting all the cords up off the floor makes it a lot easier to sweep or vacuum under the desk, and a lot hard for cats to disturb things. Satisfied customer here!
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Reviewed in the United States on April 13, 2026
B
Verified Purchase
Benoit J. Lheureux
Alexandria, US
★★★★★ 5
Solid, well-made product. I like that you can rotate-to-mount for different situations.
Size: 6FT, Style: 1 Pack
Heavy-duty chord, heavy-duty sockets, heavy-duty metal frame. Works well, and I like the lighted on/off switch. Being able to rotate and mount however needed makes it versatile. As clearly illustrated in the product description, the sockets are *really* close to each other, but that perfectly met my needs - but look for alternatives if you plan to plug in wall-warts and other space-consuming devices.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026

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