SKU: 68762643265

Active Autowerke Catted Downpipe w/ G-Sport Cat - BMW / N55 / F3X M235I / 335I / 435I / F87 M2

Sale price$929.16 Regular price$1032.40
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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

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Description

Active Autowerke Catted Downpipe w/ G-Sport Cat - BMW / N55 / F3X M235I / 335I / 435I / F87 M2BMW introduced a new valvetronic, single turbo version of its direct injection engine for the F Chassis models beginning in 2012. The Active Autowerke N55 downpipe for the M235i, 335i, 435i and M2 helps unleash some of the potential that is restricted by the OEM downpipe. Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better. Unfortunately, the factory down pipe in the


BMW introduced a new valvetronic, single turbo version of its direct-injection engine for the F-Chassis models beginning in 2012. The Active Autowerke N55 downpipe for the M235i, 335i, 435i and M2 helps unleash some of the potential that is restricted by the OEM downpipe. 

Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better. Unfortunately, the factory down pipe in the N55 is quite restrictive, which results in slower exhaust gases and slower turbo spool.

The Active Autowerke F-Chassis N55 Signature down pipe utilizes 3.5” diameter stainless steel piping in order to provide more power, quicker spool, and extreme durability.  This variant includes a 4.5" high flow GESI catalytic converter that will NOT produce a CEL! 

The GESi® G-Sport Ultra High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESi® UHO-Series Catalytic Converters are EPA certified in 49 states and fully OBD2 compliant. GESi® proprietary precious metal loading technology ensures greatly reduced emissions, eliminating most "Check Engine Lights". These high flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems.

The GESi® UHO-Series Catalytic Converters are rated for engines putting out between 500 and 850 horsepower while maintaining a high flow capacity. The reduced back-pressure from this high flow catalytic converter will allow you to maximize your engines horsepower without the harmful emissions. Say goodbye to Check Engine Lights and failed emissions tests!

Please Note: These catalytic converters are not legal for use on vehicles registered in the state of California as a result of California Vehicle Code Section 27156 and 38391.

 

Features:

  • NO CEL when using this downpipe
  • Designed to be as unrestrictive as possible 
  • GESI EPA registered high flow and fully OBD2 compliant 
  • High flow 4.50" GESI cat with 3.50" piping allows for maximum power output
  • Quicker turbo spool - improved power over stock 
  • Rated for 500 to 850 hp applications
  • Withstands up to 1500° F
  • Can reach operational efficiency within 9 seconds of startup 
  • Easily bolts-on – no cutting or welding required 
  • Durable construction from TIG welded 304 stainless steel 
  • Precise fitment
  • Modular design for later upgrades
  • Made in Miami, Florida
  • Ultra high flow 300 cell per square inch catalyst 
  • EPA certified for use on OBD2 vehicles (1996 and newer) except in California 
  • Full 304 stainless steel construction 
  • 304 stainless steel substrate in the catalytic converter is furnace braised to the mantle for outstanding durability 
  • GESi® proprietary precious metal loading technology ensures greatly reduced emissions 
  • Ideal for Forced Induction Applications with no loss of HP 
  • Both passengers and drivers are safe from harmful emissions and noise 
  • Covered by 5 Year / 50,000 Mile Warranty (on catalytic converter)

 

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: 68762643265

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4.3 ★★★★★
Based on 26 reviews
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Verified Purchase
Jessica Horn
Phoenix, US
★★★★★ 5
It’s a YES from me!
Color: B-brown
I absolutely love this purse. And I’m so heartbroken because something got spilled inside of it and it affects the functionality of the person on the inside and it makes me so sad but I still use it anyway because there’s one side I can use completely and half a side I can use on the other side lol. It is very good quality. The storage is A+. It is definitely a good value for the price. I was skeptical at first as we all are ordering a purse off Amazon, that is not real leather, but it’s supposed to be good quality. It didn’t really have much of a smell. I actually don’t use the strap provided since I seen that the straps could be interchangeable, I used my strap off my previous purse instead, and now I love it love it! 😍 I get compliments on it all the time!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2025
M
Mandee~
Lake Worth, US
★★★★★ 5
Perfect size!
I love a good large hobo bag! This one has a great slouch to it and you can fit a ton in it! I've had everything from my iPad and a makeup bag plus yoga clothes and still had room for a water bottle too! The fabric is gorgeous and although I'm not always keen on logo-prints, I like that the bag's print is so understated and discreet.
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Reviewed in the United States on May 22, 2026
K
Kelly from TX
San Leandro, US
★★★★★ 5
Large, non zipping, sturdy, stylish
large cream MK purse I’m giving my thoughts on this purse that I got recently and here is what I liked. Size- This is a large purse. It has one large main compartment that is secured with a gold, snapping clasp. It doesn’t come apart unless you push both sides of this clasp. 1 pocket inside for my phone or whatever I need quick access to. 2 vertical outside pockets with working zipper. The pockets run the height of the purse and are narrow. I can get a skinny water bottle in there. Not Adjustable This comes with a short shoulder strap. The strap is not removable. There are two D-rings (H-ring) on each side that hold the strap so if I want I can add a long strap. Really though, this is not the kind of purse that would look good with a long strap. There is plenty of room to put the purse on your shoulder and it feels very secure. Look and feel It looks and feels like leather to me but it says PU which is not leather. I’m fine with that. It is firm in a sturdy strong way, having structure and can stand up on a table. The material is the kind you can wipe with a damp cloth. This purse is not going to get stained unless it’s something like ink that stains practically everything. Mine has monogram NK but if you don’t look real close, I think it looks a lot like a designer purse with the monogram m and k. Function I tend to change purses a lot so I keep things in smaller bags. For example, I have small bags for makeup, medical etc and they fit neatly in here. There is not a designated place for cards and cash so you’d need a wallet or you could put it in the inside pocket. I use a medium sized wallet. My iPhone 14 with case fits in the inside pocket and hasn’t fallen out yet. The 2 outside zipper pockets are large enough to hold my phone and my wallet, one on each side. I can’t think of anything I’d add or change right now. This is a very nice bag to carry everyday. The holding capacity is similar to the neverfull. I’m happy I got this and can recommend it to you. It’s nice looking, makes good use of space, and for me, was a good deal.
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Reviewed in the United States on March 15, 2026
M
Verified Purchase
mary
Massapequa, US
★★★★★ 1
👎🏻
Color: Beige
0 stars Poor quality Arrived torn
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Reviewed in the United States on May 25, 2026
T
tiffanyking75
Port Orchard, US
★★★★★ 2
Quality is not there, I am very disappointed!
Color: Pink, Color: Pink
I am one of those very rare ladies that will wait until her previous purse is on its last leg before I buy a new one. That is when I decided I needed this one. Once I opened the package I noticed a very distinct odor, it was very obviously the purse and it was not a "new" smell it was very off-putting. The purse does not seem very durable as I noticed loose threads throughout the lining of the purse. I was also a little disappointed that this purse is so large but it only had one very large square pocket on the inside. The only reason I gave this more than one star is because of the two very nice pockets on the purse front. I appreciate what they were trying to do, I do not think they were quite up to par on the quality, I would not recommend this item.
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Reviewed in the United States on March 11, 2026

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