SKU: 87291486002

Competition Series Catless Downpipes for 2016-18 M550i/750i N63 Engine

Sale price$627.75 Regular price$697.50
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Competition Series Catless Downpipes for 2016-18 M550i/750i N63 EngineIntroducing our Competition Series Catless Downpipes for your twin turbo N63 engine! Fits 2016 18 M550i 750i (G30 G11). Key Features: Made in the USA! Manufactured in house. Now available for the 2016 18 M550i 750i N63 Engines! Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Better throttle response and faster turbo spool up times. Mandrel Bent 3" piping. Smooth transition to the exhaust

Introducing our Competition Series Catless Downpipes for your twin turbo N63 engine!  Fits 2016-18 M550i/750i (G30/G11).

Key Features:

  • Made in the USA!  Manufactured in house.
  • Now available for the 2016-18 M550i/750i N63 Engines!
  • Higher Max Horsepower Power Curve
  • Higher Initial Torque Curve.  Torque curve hits faster and higher and longer.
  • Better throttle response and faster turbo spool up times.
  • Mandrel Bent 3" piping.  Smooth transition to the exhaust system.
  • 100% Stainless Steel Construction
  • 100% TIG welded for better quality welds
  • Precision CNC machined turbocharger V-Band flange.
  • Retains factory donut style gasket.
  • Mirror polish or brush finish
  • Available with high temperature black thermal coating to reduce underhood temperatures.
  • Compatible with the factory or aftermarket exhaust systems.
  • Track tested durability.
  • Includes all hardware for complete installation.
  • Limited Lifetime Warranty.

Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars.  Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly.  The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction.  The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves. Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the exhaust system thus causing a major exhaust flow restriction.  It also causes turbulence after the catalytic converter which causes the exhaust flow to slow down (which increases restriction).  By replacing the factory downpipe/catalytic converter with our Competition Series Catless Downpipe, more power is unleashed!  You will feel the difference instantly. 

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 3.5" 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. The factory donut flange design is retained.  100% bolt on.

Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system.  There are no compatibility issues whatsoever.  The downpipes will come by default with brushed finish.

OPTIONS

Ceramic Thermal Coating - The purpose of ceramic coating downpipes is to keep heat from the exhaust gases inside the downpipe from radiating out. This keeps underhood temperatures lower and less heat absorption by nearby parts/surfaces.  Another added benefit is that by keeping in heat (energy) in the exhaust gases inside the downpipe, exhaust flow velocities stay up, resulting in lower backpressure. The ceramic coating also adds additional corrosion resistance. We utilize the best ceramic coating possible. Our thermal coating can resist up to 2000F of heat. It is available in black only (all the other colors cannot withstand the high levels of heat).

CAUTIONThis product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution controlled vehicles upon public road/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA.  In addition to vehicle use verification, a Vehicle Compliance Waiver needs to be signed.

THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHILES IN THE STATE OF CALIFORNIA. 

The item is for sale for international customers without restriction.

Please contact us at [email protected] or call us at (626) 334-6609

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: 87291486002

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Christine Buchler
Boise, US
★★★★★ 5
Dogs like the flavor
Flavor Name: Beef, Size: 1.5 Pound (Pack of 1)
My dogs love it!
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Reviewed in the United States on April 14, 2026
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Keepin’ItReal77
Lake Worth, US
★★★★★ 5
Perfect for small dogs!
Flavor Name: Peanut Butter, Size: 55 Count (Pack of 1)
My toy poodle loves these little sticks. They are small and easy for him to chew, and he loves the peanut butter flavor. The twists are high quality, according to my pup! He gets one a day, and he looks forward to treat time. The snack is perfect for a treat because it does not keep him from eating his food.
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Reviewed in the United States on January 23, 2026
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Happytipp
New York, US
★★★★★ 5
Great treat!
Flavor Name: Peanut Butter, Size: 55 Count (Pack of 1), Flavor Name: Peanut Butter, Size: 55 Count (Pack of 1)
Wonderful treat for my Corsos! They also easily break apart if they need just a small goodie 🙂 I've had these on Subscribe & Save for over a year now.
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Reviewed in the United States on April 17, 2026
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Heather S (inkedrt)
Chelsea, US
★★★★★ 5
Poochie love
Flavor Name: Peanut Butter, Size: 55 Count (Pack of 1)
My dogs LOVE these SO much! Great quality for some cute, pampered poochies!
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Reviewed in the United States on March 13, 2026
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Leilani
Los Angeles, US
★★★★★ 5
My dogs say these are five stars (and they’re the real bosses here)
Flavor Name: Peanut Butter, Size: 55 Count (Pack of 1), Flavor Name: Peanut Butter, Size: 55 Count (Pack of 1)
I was a little worried these treats might be teeny tiny, but they’re actually the perfect size for my 10 and 13-pound rescue Chihuahuas. They love them so much that if I even touch the bag, they come running like it’s the ice cream truck for dogs. The texture is great — chewy but not too hard — and they keep the pups busy for a little while. I also like that they’re rawhide-free and easy to digest. The peanut butter smell must be amazing to them because they act like it’s the best thing they’ve ever tasted (and honestly, judging by their excitement, maybe it is). I’ve officially learned that I’m not allowed to open this bag unless I’m ready to hand out treats immediately — no exceptions!
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Reviewed in the United States on October 13, 2025

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