AFE BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW F85 X5 M S63 4.4L

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Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.
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aFe MACH Force-XP 304 Stainless Steel Cat-Back Exhaust System w/o Muf...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:557826
Part#: 49-36342-B
Ships in 1 Business Day
Sale - Save 10% $ 4,312.00

This product was last offered at the strikethrough price on
06-29-2026

$ 3,880.80 USD
Sale - Save 10%
$ 4,312.00

This product was last offered at the strikethrough price on
06-29-2026

$ 3,880.80 USD

Add power, sound and unique style to your BMW X5/X6 M with this aFe Power cat-back system which produced gains of up to +15 horsepower and +23 lbs. x ft. torque as measured on our in-house dyno. Dual 3" to 2-1/2" mandrel-bent, TIG welded, brush finished 304 stainless steel tubing keeps exhaust flowing smoothly for power gains you can feel. The factory exhaust valve motor is used to regulate the exhaust flow from a closed-valve, aggressive tone to wide-open, competition sound. True quad, 3 1/2" black stainless steel exhaust tips with laser etched aFe Power logo for a custom finish.

DETAILS:

  • In-house dyno testing produced gains of up to +15 horsepower and +23 lbs. x ft. torque
  • 3" - dual 2-1/2" mandrel bent, brush finished 304 stainless steel tubing outflows and outlasts factory exhaust
  • True quad 3 1/2" diameter black stainless steel exhaust tips with laser-etched aFe Power logo
  • 100% CAD designed for a custom, high tolerance factory fitment
  • Muffler deleted design and integrated mitered merge evenly distributes exhaust pulses
  • Includes extension leads for exhaust valve motor relocation

Performance Gains:
In-house dyno testing produced gains of up to +15 horsepower and +23 lbs. x ft. torque

Brush finished 304 Stainless Steel Construction:
This exhaust system is constructed of 3" - dual 2-1/2" mandrel-bent, brush finished 304 stainless steel tubing for maximum flow, corrosion resistance and quality finish.

True Quad 3 1/2" Black Stainless Steel Exhaust Tips:
Finishing off this system are quad 3 1/2" diameter black stainless steel exhaust tips. Laser-etched with aFe Power logo for a custom, stylish finish.

Flow and Performance:
This cat-back system features a muffler-deleted design and Integrated mitered merge to evenly distributes exhaust pulses for an aggressive to track-style exhaust tone.

Simple, Hassle Free Installation:
This system has been 100% CAD designed to factory tolerances for a direct bolt-on fitment with no cutting or modifications required. Quality stainless steel hardware and valve extensions included for a hassle-free installation.

TIG-Welded:
100% TIG-welded for race proven strength and durability.

Emissions Disclaimer:
This product does not require a CARB EO# (CARB Aftermarket Parts Verification Guidelines).

aFe POWER exhaust systems are engineered and manufactured in our Corona, California

Show More Show Less
aFe MACH Force-XP 304 Stainless Steel Cat-Back Exhaust System w/ Blac...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:557828
Part#: 49-36341-B
Ships in 1 Business Day
Sale - Save 10% $ 4,472.00

This product was last offered at the strikethrough price on
06-29-2026

$ 4,024.80 USD
Sale - Save 10%
$ 4,472.00

This product was last offered at the strikethrough price on
06-29-2026

$ 4,024.80 USD

Add power, sound and unique style to your BMW X5/X6 M with this cat-back system which produced gains of up to +20 horsepower and +33 lbs. x ft. torque as measured on our in-house dyno. Dual 3" to 2-1/2" mandrel-bent, brush finished 304 stainless steel tubing keeps exhaust flowing smoothly for power gains you can feel.  Designed with a transverse, high flow muffler finished in high temp powder coating for long lasting good looks and unique sound. The factory exhaust valve motor is used to regulate the exhaust flow from a closed-valve, sporty tone to wide-open, aggressive, performance sound. True quad, 3 1/2" black stainless steel exhaust tips with laser etched aFe Power logo for a custom finish.

DETAILS:

  • In-house dyno testing produced gains of up to +20 horsepower and +33 lbs. x ft. torque
  • 3" - dual 2-1/2" mandrel bent, brush finished 304 stainless steel tubing outflows and outlasts factory exhaust
  • True quad 3 1/2" diameter black stainless steel exhaust tips with laser-etched aFe Power logo
  • 100% CAD designed for a custom, high tolerance factory fitment
  • Transverse, high flow muffler and Integrated mitered merge evenly distributes exhaust pulses
  • Uses the factory exhaust valve motor and Includes extension leads

Performance Gains:
In-house dyno testing produced gains of up to +20 horsepower and +33 lbs. x ft. torque

Brush Finished 304 Stainless Steel Construction:
This exhaust system is constructed of 3" - dual 2-1/2" mandrel-bent, brush finished 304 stainless steel tubing for maximum flow, corrosion resistance and quality finish.

True Quad 3 1/2" Black Stainless Steel Exhaust Tips:
Finishing off this system are quad 3 1/2" diameter black stainless steel exhaust tips. Laser-etched with aFe Power logo for a custom, stylish finish.

Flow and Performance:
Transverse high flow muffler supports true quad pipe exhaust flow and unique exhaust notes. Finished in a high temperature metallic black powder coating that helps prevent corrosion.

Simple, Hassle Free Installation:
This system has been 100% CAD designed to factory tolerances for a direct bolt-on fitment with no cutting or modifications required. Quality stainless steel hardware and valve extensions included for a hassle-free installation.

TIG-Welded:
100% TIG-welded for race proven strength and durability.

Emissions Disclaimer:
This product does not require a CARB EO# (CARB Aftermarket Parts Verification Guidelines).

aFe POWER exhaust systems are engineered and manufactured in our Corona, California

Show More Show Less
aFe MACH Force-XP 304 Stainless Steel Cat-Back Exhaust System w/o Muf...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:557825
Part#: 49-36342-P
Back Ordered
Sale - Save 10% $ 4,013.99

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

$ 3,609.00 USD
Sale - Save 10%
$ 4,013.99

This product was last offered at the strikethrough price on
05-27-2026

$ 3,609.00 USD

Add power, sound and unique style to your BMW X5/X6 M with this aFe Power cat-back system which produced gains of up to +15 horsepower and +23 lbs. x ft. torque as measured on our in-house dyno. Dual 3" to 2-1/2" mandrel-bent, TIG welded, brush finished 304 stainless steel tubing keeps exhaust flowing smoothly for power gains you can feel. The factory exhaust valve motor is used to regulate the exhaust flow from a closed-valve, aggressive tone to wide-open, competition sound. True quad, 3 1/2" polished stainless steel exhaust tips with laser etched aFe Power logo for a custom finish.

Performance Gains:
In-house dyno testing produced gains of up to +15 horsepower and +23 lbs. x ft. torque

Brush Finished 304 Stainless Steel Construction:
This exhaust system is constructed of 3" - dual 2-1/2" mandrel-bent, brush finished 304 stainless steel tubing for maximum flow, corrosion resistance and quality finish.

True Quad 3 1/2" Polished Stainless Steel Exhaust Tips:
Finishing off this system are quad 3 1/2" diameter polished stainless steel exhaust tips. Laser-etched with aFe Power logo for a custom, stylish finish.

Flow and Performance:
This cat-back system features a muffler-deleted design and Integrated mitered merge to evenly distributes exhaust pulses for an aggressive to track-style exhaust tone.

Simple, Hassle Free Installation:
This system has been 100% CAD designed to factory tolerances for a direct bolt-on fitment with no cutting or modifications required. Quality stainless steel hardware and valve extensions included for a hassle-free installation.

TIG-Welded:
100% TIG-welded for race proven strength and durability.

DETAILS:

  • In-house dyno testing produced gains of up to +15 horsepower and +23 lbs. x ft. torque
  • 3" - dual 2-1/2" mandrel bent, brush finished 304 stainless steel tubing outflows and outlasts factory exhaust
  • True quad 3 1/2" diameter polished stainless steel exhaust tips with laser-etched aFe Power logo
  • 100% CAD designed for a custom, high tolerance factory fitment
  • Muffler deleted design and integrated mitered merge evenly distributes exhaust pulses
  • Uses the factory exhaust valve motor and Includes extension leads

Emissions Disclaimer:
This product does not require a CARB EO# (CARB Aftermarket Parts Verification Guidelines).

aFe POWER exhaust systems are engineered and manufactured in our Corona, California

Show More Show Less

aFe MACH Force-XP 304 Stainless Steel Cat-Back Exhaust System w/ Poli...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AFE - Corporate Logo
T#:557827
Part#: 49-36341-P
Back Ordered
Sale - Save 10% $ 4,312.00

This product was last offered at the strikethrough price on
06-29-2026

$ 3,880.80 USD
Sale - Save 10%
$ 4,312.00

This product was last offered at the strikethrough price on
06-29-2026

$ 3,880.80 USD

Add power, sound and unique style to your BMW X5/X6 M with this cat-back system which produced gains of up to +20 horsepower and +33 lbs. x ft. torque as measured on our in-house dyno. Dual 3" to 2-1/2" mandrel-bent, brush finished 304 stainless steel tubing keeps exhaust flowing smoothly for power gains you can feel.  Designed with a transverse, high flow muffler finished in high temp powder coating for long lasting good looks and unique sound. The factory exhaust valve motor is used to regulate the exhaust flow from a closed-valve, sporty tone to wide-open, aggressive, performance sound. True quad, 3 1/2" polished stainless steel exhaust tips with laser etched aFe Power logo for a custom finish.

DETAILS:

  • In-house dyno testing produced gains of up to +20 horsepower and +33 lbs. x ft. torque
  • 3" - dual 2-1/2" mandrel bent, brush finished 304 stainless steel tubing outflows and outlasts factory exhaust
  • True quad 3 1/2" diameter polished stainless steel exhaust tips with laser-etched aFe Power logo
  • 100% CAD designed for a custom, high tolerance factory fitment
  • Transverse, high flow muffler and Integrated mitered merge evenly distributes exhaust pulses
  • Uses the factory exhaust valve motor and Includes extension leads

Performance Gains:
In-house dyno testing produced gains of up to +20 horsepower and +33 lbs. x ft. torque

Brush Finished 304 Stainless Steel Construction:
This exhaust system is constructed of 3" - dual 2-1/2" mandrel-bent, brush finished 304 stainless steel tubing for maximum flow, corrosion resistance and quality finish.

True Quad 3 1/2" Polished Stainless Steel Exhaust Tips:
Finishing off this system are quad 3 1/2" diameter polished stainless steel exhaust tips. Laser-etched with aFe Power logo for a custom, stylish finish.

Flow and Performance:
Transverse high flow muffler supports true quad pipe exhaust flow and unique exhaust notes. Finished in a high temperature metallic black powder coating that helps prevent corrosion.

Simple, Hassle Free Installation:
This system has been 100% CAD designed to factory tolerances for a direct bolt-on fitment with no cutting or modifications required. Quality stainless steel hardware and valve extensions included for a hassle-free installation.

TIG-Welded:
100% TIG-welded for race proven strength and durability.

Emissions Disclaimer:
This product does not require a CARB EO# (CARB Aftermarket Parts Verification Guidelines).

aFe POWER exhaust systems are engineered and manufactured in our Corona, California

Show More Show Less