SKU: 11065363876

Active Autowerke Catted Downpipes (GESI G-Sport Cats) - BMW / F8X / S55 / M3 / M4 / M2 Competition

Sale price$1859.00 Regular price$2065.55
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Active Autowerke Catted Downpipes (GESI G-Sport Cats) - BMW / F8X / S55 / M3 / M4 / M2 CompetitionFor over 30 years, Active Autowerke has been the one to turn to for high quality BMW performance products. Committed to enhancing the performance of BMWs through the highest quality products is what Active Autowerke is all about. The newest addition to our BMW F87 M2C, F80 M3 and F82 M4 Collection, these F8X catted downpipes are a true testament to our outlook on creating innovative products with performance in mind. Developed for precise fitment on


For over 30 years, Active Autowerke has been the one to turn to for high quality BMW performance products. Committed to enhancing the performance of BMWs through the highest quality products is what Active Autowerke is all about. The newest addition to our BMW F87 M2C, F80 M3 and F82 M4 Collection, these F8X catted downpipes are a true testament to our outlook on creating innovative products with performance in mind. Developed for precise fitment on the F87 M2C, F80 M3 and F82 BMW M4, the difference in performance will be noticeable the moment you leave your driveway!

This variant includes a pair of 4" ultra high flow GESI catalytic converters (Gen 2 Advanced) that will NOT produce a CEL!

The GESI G-Sport High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESI HO-Series Gen 2 Catalytic Converters are EPA registered and compliant in 49 states and fully OBD2 compliant, perfect for use on 1996 and newer vehicles. GESI proprietary precious metal loading technology ensures greatly reduced emissions, eliminating most "Check Engine Lights". These ultra high flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems.

The GESI HO-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 ultra 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.

NOTE: Federal law prohibits the tampering of an emissions control device. u00a0Mobile Source Enforcement Memorandum 1A, allows for aftermarket parts to be used in the repair or replacement of emissions control systems, provided the emissions are not adversely affected. There is no mention or reference to cell density or converter volume dimension. The GESI catalytic converter will produce emissions that will meet the standards set by the EPA, not CARB.

Features:

  • NO CEL for catalytic efficiency when using this downpipe
  • Quicker turbo spool and response
  • Less restrictive, more free flowing
  • Improved low end and mid range performance as well as higher boost levels
  • GESI EPA registered high flow and fully OBD2 compliant
  • Casted upper stainless steel V-Band for precise fitment
  • Withstands up to 1500F
  • Can reach operational efficiency within 9 seconds of startup
  • Easily bolts-on with no cutting or welding required
  • Accepts OEM O2 sensor heat shield
  • Durable construction from TIG welded 304 stainless steel
  • Precise fitment
  • Ultra high flow 400 cell per square inch catalyst
  • EPA compliant for use on OBD2 vehicles (1996 and newer) except in California
  • 304 stainless steel substrate 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 shell and tube ends) and 2 year / 25,000 Mile Warranty on the Catalytic core
  • Made in Miami, Florida


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: 11065363876

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 1412 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jonathan
New York, US
★★★★★ 5
Super Comfortable!
Size: Queen (U.S. Standard)
Super comfortable, I would highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
F
Verified Purchase
Fran Ikard
Omaha, US
★★★★★ 4
Happy with product
Size: Queen (U.S. Standard)
Good packaging, fluffs up nicely, no neck pain after use and no allergies !!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
M
Verified Purchase
Megan Stearns
Birmingham, US
★★★★★ 1
Very thin & no support
Size: Queen (U.S. Standard)
I was thinking these pillows were going to be kind of firm with the way they are described and the picture but they are very thin and when I laid down on it, it was like whatever is in the pillow just instantly moved to each side of my head. Definitely not for me and my neck issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
G
Gadget Reviewer
Lake Worth, US
★★★★★ 5
Back sleeper here
Size: Standard
So since they were listed as down alternative, I was interested to see if they had that artificially puffy feel to them. They do get puffed up really well after a day. And the fabric is cool and comfortable. I do feel like these have good quality stuffing and the cover feels nice. I'm a back sleeper and it's just the right amount of bulk under my neck. I usually bunch the pillow up a little bit there so there's a little more pressure under my neck but with these it just felt good to lay on it without having to bunch it up in any special way. So I would definitely recommend them. So far I'm really liking having these pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
S
ScienceWriter
Carnegie, US
★★★★★ 5
Nice and Fluffy
Size: Standard
These "down alternative" pillows have been a winner for me. Came two to a package and once they have a couple of days our of the vacuum packaging are nice and fluffy with no noticable odor. Just the right amount of "spring" to them for my taste. Also don't overheat my face/neck as traditional down pillows sometimes have.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026

recommand products