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Mertop Race Tuning Downpipe B*** F30 335i , 435i, N55 no Kat

Sigo Industrial (Shanghai) Co., Ltd
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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
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Brand Name:
MERTOP
Place of Origin:
China
Model Number:
Mertop Race Tuning Downpipe B*** F30 335i , 435i, N55 no Kat
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Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
2 days

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Brand Name MERTOP
Place of Origin China
Model Number Mertop Race Tuning Downpipe B*** F30 335i , 435i, N55 no Kat
Item specifics

  • Brand Name:MAIZHI

  • Special Features:standard

  • Interchange Part Number:n/a

  • Manufacturer Part Number:n/a

  • For Vehicle Brands/Model:BMW

  • Other Part Number:n/a

  • Material Type:304 stainless steel

  • Condition:100% new

  • Surface treatment:Mirror Polished

  • Welding:Potented TIG Welding

  • Tube thickness:2.0mm

  • Fitment:N55 Single turbo 335i 435i the M235I M135I F30 F32 F22

  • Material:Stainless steel 304

  • Size:4inch

  • Car Maker:BMW




Product Description
 

2013+ N55 F30 F32 F33 F20 F21 Turbo Competition Series 4" Catless Downpipe 

1

Item specifics

1.latest Satin / Brush Finish

2.TIG welded

3.Fits all N55 single turbo motors from 2013+

 

Detail size as follow:

 

 

2

 


Competition Series 4" Downpipes for your 2012+ 335i (F30 Chassis) six cylinder N55 turbo engine, 2013+ 435i (F32/F33 Chassis) six cylinder N55 turbo engine and 2012+ M135i (F20/F21 Chassis) six cylinder N55 turbo engine

Between 2013-2014 N55 changed the downpipe features. 
Please read below important notes:

The F Series (1,2,3,4 Series) N55 cars all share the same downpipe.  When first introduced, the downpipes had a 3.5" v-band flange intlet on the turbocharger side.  On 07/13, n55 decided to change the downpipe.  This new downpipe featured a 4" v-band flange inlet instead.  Thus, the previous downpipes are not compatible with the new ones. 

Below is the breakdown on which downpipe to chose based on production date:

335i (U.S. Spec) - Up to 07/13 have the old downpipe (BM-EXH007)

                          After 07/13 have the new downpipe (BM-EXH012)

435i (U.S. Spec) - All 435i have the new downpipe (BM-EXH012)

M235i (U.S. Spec) - All M235i have the new downpipe (BM-EXH012)

M135i (European Spec) - Up to 07/13 have the old downpipe (BM-EXH007)

                                   After 07/13 have the new downpipe (BM-EXH-012)

IF THE VEHICLE IN QUESTION IS BUILT ON 07/13, IT CAN HAVE EITHER DOWNPIPE.  A VIN# CHECK SHOULD VERIFY WHICH DOWNPIPE IT IS.  TO BE ABSOLUTELY SURE, A VISUAL INSPECTION NEEDS TO BE DONE.  SINCE THE FACTORY PART# ON THE DOWNPIPES ARE DIFFICULT TO SEE, THE BEST WAY TO CHECK IS TO LOOK AT THE PART# ON THE BRACKET HOLDING THE DOWNPIPE.  THE OLDER DOWNPIPES HAVE 2 STUDS GOING INTO THE BRACKET AND ATTACHED BY 2 NUTS.  THE NEWER DOWNPIPE HAS 1 STUD ON TOP ATTACHED BY A NUT.  THE BOTTOM BRACKET IS ATTACHED WITH A BOLT, NOT A NUT.


 

4
Shown in brushed finish


Our Competition Series Catless Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping.  They are 100% TIG welded by our in house fabricators and built in the USA.  The factory turbocharger turbine housing utilizes a V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel.  Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods.  The O2 sensor is positioned at the factory location.  Since the outlet of the turbocharger is 3.5" and the factory exhaust system is 3", the factory downpipes reduces size using short transitions from 3.5" before the catalytic convert and 3" afterwards.  Due to space needed for the cataylic converter, the factory downpipes reduce in size using very short transitions.  Since our catless downpipes delete the cataylic converter, we have more space.  Thus, we use very long transitions.  These longer transitions allow the exhaust gas time to smoothly transition from the larger piping to the smaller.  Also, since we utilize a larger 4" pipe right after the turbocharger, turbo backpressure is significantly reduced.  This results in less exhaust turbulence and backpressure which again improves throttle response and increase turbocharger spool times (less turbocharger lag).
355070
 

 

CNC Machined Billet Stainless Steel V-band Flange


Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system.  
There are no compatibility issues whatsover.  
The downpipes will come by default in Brushed Finish.  We also offer a Polished Finish as an option.

 

CONDITION: BRAND NEWUniversal

 
 
 
 

 

Packaging Details

  • Unit Type: piece

  • Package Weight: 4.5kg (9.92lb.)

  • Package Size: 45cm x 25cm x 20cm (17.72in x 9.84in x 7.87in)


Product Tags: no Kat , Tuning Downpipe , MERTOP

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Sigo Industrial (Shanghai) Co., Ltd
Business Type
Manufacturer
Year Established
2016
Factory Size
1,000-3,000 square meters
Annual Export Value
US$2.5 Million - US$5 Million
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