BMW Downpipes for BMW X6 M S63 4.4L

Downpipe To Cat-Back Reducer - Priced Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:22427013

Part#: 006555ECS06B

In Stock

Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD

Add to Wish List

Qty

Sale - Save 25%

$ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD

Add to Wish List

Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

Allows for seamless connection between downpipe and cat-back exhaust
High-quality construction for durability
Tight seal reduces exhaust leaks
Enhances overall exhaust flow
Easy installation and compatibility with various exhaust systems

Show More Show Less

Genuine BMW Exhaust Nut - Exhaust Manifold to Cylinder Head - F01 F02...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:36828

Part#: 11627576992

Ships in 2 Business Days

3% off MSRP $ 6.42

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 6.20 USD

Add to Wish List

Qty

3% off MSRP

$ 6.42

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 6.20 USD

Add to Wish List

Genuine BMW Hex Nut Wiht Flange -
This item fits the following BMW Chassis:
E71,F01,F02,F06,F10,F12,F13,F15,F16

Fits BMW Engines including:
N63,N63N

Show More Show Less

Evolution Racewerks Sport Series High Flow Catted Downpipes - Polishe...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:6061578

Part#: BM-EXH026PCAT

Ships in 8 Business Days

$ 2,495.00 USD

Add to Wish List

Qty

$ 2,495.00 USD

Add to Wish List

Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing as many exhaust flow restrictions as possible 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. Evolution Racewerks use a 200 cell metallic core for their Sports Series High Flow Catted Downpipes. By having fewer cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through them more easily. Therefore, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic, like the factory, is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts. The Evolution Racewerks catted downpipe is constructed out of grade 304 stainless steel and utilizes mandrel bent 3" piping. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which has been 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. Evolution's downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever with any exhaust designed to bolt up to stock downpipes. The downpipes will come by default with a brushed finish. Features & Specifications: High Flow 200 cell metallic catalytic converter used Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Mandrel Bent 3" piping. Smooth transition to the exhaust system - Better throttle response and faster turbo spool-up times. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Retains factory slip-on style connection. Compatible with the factory or aftermarket exhaust systems. Track tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution-controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA.

Show More Show Less

Evolution Racewerks Sport Series High Flow Catted Downpipes - Brushed...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:6061577

Part#: BM-EXH026SCAT

Ships in 8 Business Days

$ 2,395.00 USD

Add to Wish List

Qty

$ 2,395.00 USD

Add to Wish List

Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing as many exhaust flow restrictions as possible 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. Evolution Racewerks use a 200 cell metallic core for their Sports Series High Flow Catted Downpipes. By having fewer cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through them more easily. Therefore, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic, like the factory, is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts. The Evolution Racewerks catted downpipe is constructed out of grade 304 stainless steel and utilizes mandrel bent 3" piping. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which has been 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. Evolution's downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever with any exhaust designed to bolt up to stock downpipes. The downpipes will come by default with a brushed finish. Features & Specifications: High Flow 200 cell metallic catalytic converter used Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Mandrel Bent 3" piping. Smooth transition to the exhaust system - Better throttle response and faster turbo spool-up times. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Retains factory slip-on style connection. Compatible with the factory or aftermarket exhaust systems. Track tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution-controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA.

Show More Show Less

Active Autowerke Performance Catted Downpipes - Flanged - E70/71 E60/...

For Model Years 2010-2012 Only

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Model Years 2010-2012 Only - VIN Required for Purchase

T#:22822600

Part#: 11-041F

Ships in 10 Business Days

5% off MSRP $ 2,999.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,849.99 USD

Add to Wish List

Qty

5% off MSRP

$ 2,999.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 2,849.99 USD

Add to Wish List

The S63 and N63 twin-turbo V8s are world-class powerplants, but they’ve got a breathing problem. From the factory, your BMW X5M, X6M, 550i, or 650i is suffocating under massive backpressure caused by restrictive, bulky catalytic converters that trap heat and kill momentum. If you want real power, you have to let those turbos spin. Active Autowerke’s Signature High-Flow Downpipes are the ultimate "no-compromise" upgrade for the serious BMW enthusiast. Hand-fabricated in Miami, these 3.0" downpipes utilize GESi G-Sport Ultra High Output technology. You get the raw performance and rapid spool of a track setup with the refined, odorless experience of a daily driver—and most importantly, no Check Engine Light. Why These Downpipes Belong on Your BMW: Turbo performance is all about the pressure differential. By clearing the path behind the turbine wheel, you allow the turbos to work significantly less to produce significantly more. Instant Turbo Response: Experience a massive reduction in lag with quicker spool-up and instant throttle tip-in. Massive Power Ceiling: The 4.5" GESi 400-cell cores are rated for 500hp to 850hp, ensuring they won't become a bottleneck as you climb the ladder of modifications. Clean & Odorless: Forget the "gas station" smell of catless downpipes. These proprietary precious-metal catalysts keep the air clean and your cabin comfortable. Hand-Built Precision These aren't mass-produced units. Each set is TIG-welded 304 stainless steel with cast upper V-band flanges for a factory-perfect, leak-free seal. Because Active Autowerke builds these in-house, the fitment is surgical—designed for a straightforward bolt-on installation with no cutting or welding required. Turner Fitment Note: To guarantee 100% accuracy for your build, please provide your VIN at checkout. Note: These are F-chassis specific; G-body vehicles with the N63B engine require a different configuration. Core Features: No CEL Guarantee: Optimized for catalytic efficiency to keep your dashboard clear. 49-State Legal: EPA Registered and fully OBD2 compliant (Excludes CA). Built for Heat: Rated to withstand up to 1,500°F and reaches operational efficiency in just 9 seconds. Legendary Durability: 304 stainless substrate is furnace-braised to the mantle for maximum vibration resistance. Warranty Protected: Includes a 5-year/50,000-mile structural warranty and a 2-year/25,000-mile catalyst core warranty.* Technical Specs: Material: TIG-Welded 304 Stainless Steel Tubing: Full 3.0" (76mm) Mandrel-Bent Piping Catalyst: GESi Ultra High Output (400 CPI) HP Rating: 500hp - 850hp Lead Time: Custom made-to-order (Approx. 2 weeks) *A Note on Burble Tunes: We love a good exhaust crackle as much as anyone, but "aggressive" burble or pop maps physically destroy catalytic substrates. Use of such tunes will void the warranty on the GESi core.

Show More Show Less

Evolution Racewerks Sport Series High Flow Catted Downpipes - Thermal...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:6061579

Part#: BM-EXH026TBCAT

Ships in 8 Business Days

$ 2,595.00 USD

Add to Wish List

Qty

$ 2,595.00 USD

Add to Wish List

Restrictions in the exhaust system rob horsepower and torque, especially on turbocharged cars. Thus, removing as many exhaust flow restrictions as possible 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. Evolution Racewerks use a 200 cell metallic core for their Sports Series High Flow Catted Downpipes. By having fewer cells per square inch, these individual "cells" are bigger in size thus allowing exhaust gas to pass through them more easily. Therefore, the lower the cell count, the higher the flow. Higher flow = more power, faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. The benefits of a metallic catalytic converter vs a ceramic, like the factory, is that it can take higher temperatures and is more durable (last longer). They are also lighter than their ceramic counterparts. The Evolution Racewerks catted downpipe is constructed out of grade 304 stainless steel and utilizes mandrel bent 3" piping. They are 100% TIG welded by in-house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which has been 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. Evolution's downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsoever with any exhaust designed to bolt up to stock downpipes. The downpipes will come by default with a brushed finish. 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. Evolution utilizes the best ceramic coating possible. Their thermal coating can resist up to 2000F of heat. It is available in black only (all the other colors cannot withstand the heat that high). Features & Specifications: High Flow 200 cell metallic catalytic converter used Higher Max Horsepower Power Curve Higher Initial Torque Curve. Torque curve hits faster and higher and longer. Mandrel Bent 3" piping. Smooth transition to the exhaust system - Better throttle response and faster turbo spool-up times. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Retains factory slip-on style connection. Compatible with the factory or aftermarket exhaust systems. Track tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. CAUTION: This product is intended for OFF ROAD COMPETITION USE ONLY. Not legal for use on pollution-controlled vehicles upon public roads/highways. THIS PRODUCT IS FOR SALE FOR ALL 49 STATES EXCLUDING CALIFORNIA. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHICLES IN THE STATE OF CALIFORNIA.

Show More Show Less

Racing Dynamics Catted Downpipes W/Heat Shield - F95/F96 X5/X6M ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For model years 2022+

T#:8965600

Part#: 1301063590

Ships in 5 Business Days

$ 2,295.00 USD

Add to Wish List

Qty

$ 2,295.00 USD

Add to Wish List

Racing Dynamics' Gen2 Downpipes are an evolution of their line of performance downpipes. These new downpipes include improvements in the flex joint to reduce vibration and allow better alignment during installation, O2 sensor bungs for reinstallation of the OE O2 sensors, and mounting brackets to support the weight. Performance downpipes are designed reduce restrictions of the catalytic converters allowing your turbos to breathe more efficiently. This reduced restriction allows the turbos to spool up quicker and provide a more aggressive turbo sound. Features: Large 3" diameter TIG welded 304 stainless steel piping throughout for maximum power. High temperature heat shield through engine compartment to reduce heat buildup and protect engine components Direct bolt-on complete with Euro 5 200 cpsi sport catalytic converters. Straight-through design allows for maximum power and sound. Less back pressure improves turbo response and improves horsepower and torque significantly. These parts are intended for off road or track use only! This product is not for sale or use in California. Racing Dynamics has been a huge part of the European community since the early 80's. Their sway bars and strut braces are developed from pure professional experience, utilizing the expertise of skilled race engineers to develop or improve products to meet the demands of BMW drivers. The dedicated focus on performance, comfort, and strength are what make Racing Dynamics products the best on the market no matter if it's street or track.

Show More Show Less

Project Cars

SELECT YOUR BMW

BMW Downpipes for BMW X6 M S63 4.4L

Downpipe To Cat-Back Reducer - Priced Each

Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Genuine BMW Exhaust Nut - Exhaust Manifold to Cylinder Head - F01 F02...

Evolution Racewerks Sport Series High Flow Catted Downpipes - Polishe...

Evolution Racewerks Sport Series High Flow Catted Downpipes - Brushed...

Active Autowerke Performance Catted Downpipes - Flanged - E70/71 E60/...

Evolution Racewerks Sport Series High Flow Catted Downpipes - Thermal...

Racing Dynamics Catted Downpipes W/Heat Shield - F95/F96 X5/X6M ...

Select Vehicle

Purpose

Category

Brand

Price

Special Offers

Shipping

Narrow Results