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Forced Induction

E46 M3 Topmount Twinscroll Manifold

We are working hard to gain a wide range of results with this highly anticipated Twins...

We are working hard to gain a wide range of results with this highly anticipated Twinscroll Topmount Manifold. Be sure to checkout our DOC Blog with updates of development with various projects hosting this manifold. -Michael Essa from GSR Autosport is working with us on development for the 2013 Formula Drift season. -Platteforme A.G. Time-attack E46 Limited-class record holder running twinscroll setup for 2013. Application Notes: -T4 Twinscroll Standard (twinscroll V-band opt...

$2,695.00

Chargepipe Upgrade Kit 07-13 BMW N54 135i 335i ...

DOC Race BMW N54/N55 Factory Aluminum Charge Pipe Upgrade After many requests from our...

DOC Race BMW N54/N55 Factory Aluminum Charge Pipe Upgrade After many requests from our customers we introduce a 3" Aluminum Charge Pipe upgrade option for your N54.Every single unit is hand built and fitted in house by our team of talented welders and fabricators.This pipe is the one of the weak points when doing even a simple Flash Update for more boost or even stock cars. - 3" Inch High Grade Aluminum Pipe - TIG Welded @ Doc Race- Tial BOV Flange- 1/8" NPT Meth Bung (plug include...

$145.00

BMW 335i N54 Single Turbo Oil Feed Line

  This is the oil feed line used on our N54 single turbo kit.  It is stainless steel b...

  This is the oil feed line used on our N54 single turbo kit.  It is stainless steel braided over teflon hose so it will hold both high pressure and high temp.    

$95.00

BMW 335i N54 Lower Downpipe

 This is the lower downpipe that connects to your factory or any aftermarket exhaust t...

 This is the lower downpipe that connects to your factory or any aftermarket exhaust that accepts factory gaskets.  This piece is included with our N54 turbo kit but may be purchased to work with other brand turbo kits.  Note that there are no returns on this item.  This downpipe will only work with other brand turbo kits with modifications.     The unit is made from 100% 304L stainless material.  It starts as 3" v-band and enters a 3" stainless flex bellow (not cheap flex couplers...

$345.00

BMW 335i 135i 2011-2012 E90/E92/E82 N55 Top Mou...

More info on this product coming soon.

More info on this product coming soon.

$4,595.00

DOC Race T4 Turbo Blanket Carbon

DOC Race Turbo Blankets solve the problem of extreme underhood heat, stops heat damage...

DOC Race Turbo Blankets solve the problem of extreme underhood heat, stops heat damage of painted or carbon fiber hoods and helps turbos spool faster. Turbo blankets provide the ultimate means of reducing turbo lag and serve as a superior heat barrier. Carbon blankets can withstand direct heat up to 1800°F and 2500°F radiant heat. Allowing more heat in the turbine and less damaging underhood radiant heat resulting in a boost in horsepower. These blankets are designed to work with a...

$99.00

BMW 335i N54 Top Mount Turbo Hot Parts Kit

335i N54 top mount turbo hot parts kit will consist of  -Multi piece Turbo manifold.  ...

335i N54 top mount turbo hot parts kit will consist of  -Multi piece Turbo manifold.  To be used with T4 twin scroll turbo and dual MVS wastegates -Multi piece downpipes to connect to factory location exhaust -2 Tial MVS dumptubes Note: Pictures are parts in raw finish.  All hot parts kits will come ceramic coated in satin black. 

$2,995.00

BMW 335i N54 Single Turbo Oil Feed Interface Fi...

N54 oil feed interface fitting are used when installing an upgraded turbo system.  The...

N54 oil feed interface fitting are used when installing an upgraded turbo system.  They are low profile so they will fit just about any single turbo kit on the market.  Comes with Chemical-Resistant Viton® Fluoroelastomer o-ring which can hold up to extreme temperatures and will connect to a -4an line.     

$69.00

BMW 335i N54 Single Turbo Manifold

More info on this item coming soon T4 twin scroll Works with dual Tial MVS wastegates ...

More info on this item coming soon T4 twin scroll Works with dual Tial MVS wastegates    

$1,995.00

BMW 335i N54 Oil Drain Fitting For Top Mount Turbo

Our N54 oil drain fitting was designed to be used on top mount turbo setups.  This is ...

Our N54 oil drain fitting was designed to be used on top mount turbo setups.  This is a direct fit and is perfectly angled so you get max flow for your turbo.     

$65.00

BMW 335i 135i N54 Top Mount Single Precision Tu...

Turbo kits currently have a 1 week build time. All turbo kits will now come fully cera...

Turbo kits currently have a 1 week build time. All turbo kits will now come fully ceramic coated for protection! We are currently shipping turbo kits with O2 sensor spacers which will reduce the risk of burning out your factory sensors.    The DOC Race turbo kit is the ulimate turbo kit for your street machine!  Our turbo kit currently holds the N54 single turbo HP record at 889hp.  They come complete with all nessary hardware to install and is listed below.  The kits come with Pre...

$5,795.00

BMW 335i 135i N54 Top Mount Single Garrett Turb...

Turbo kits are currently 3-4 weeks out from shipping!   The DOC Race turbo kit is the ...

Turbo kits are currently 3-4 weeks out from shipping!   The DOC Race turbo kit is the ulimate turbo kit for your street machine!  Our turbo kit currently holds the N54 single turbo HP record at 889hp.  They come complete with all nessary hardware to install and is listed below.  The kits come with Garrett  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 ...

$5,095.00

335i 2013+ F30 N55 Top Mount Turbo Kit

Hi guys, I thought I would share some news on what we've been working on at the shop. ...

Hi guys, I thought I would share some news on what we've been working on at the shop. We have ourselves a new player in the N55 upgraded turbo game. With such great results with the N54 turbo kits I figure why change things.  We will use all the same great parts (Precision, Tial, Vibrant) even the same size exhaust tubing, hell we are even using the same head flange.  There have been some tweaks but the new kit is practically the N54 kit. We just had to make some small adjustments ...

$5,995.00