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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Universal Catalytic Converter - 2.25"
Universal Catalytic Converter - 2.25"
Emico - Corporate Logo
T#:23152011
Part#: 602205
In Stock
$ 97.99 USD
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$ 97.99 USD
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Enhance your BMW's performance with this OBD II compliant universal fit catalytic converter. This converter, devoid of O2 sensor bungs, ensures compatibility with various vehicles. However, please note that it's not a 50-state legal catalytic converter. For California residents, it's recommended to verify local laws pertaining to aftermarket catalytic converters.
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Titanium Exhaust Wrap - 2" X 25'
Titanium Exhaust Wrap - 2" X 25'
Prosport Performance - Corporate Logo
T#:385025
Part#: HEA-WRAPKIT-25
Ships in 1 Business Day
$ 29.99 USD
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$ 29.99 USD
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Constructed for durability with a tight weave, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility. Fiberglass is rated for 1200 degrees, however, this titanium wrap can withstand 1800 degrees! 

Key Features:

  • 2" wide x 1/16" thick
  • Durable, tightly woven, 100% fiberglass
  • Reduce under hood temperatures
  • Protect other engine components
  • Protect your hands/arms from burns
  • Each roll comes with 5 FREE, 14" long stainless steel zip ties
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Prosport Titanium Exhaust Wrap - 2" x 50
Prosport Titanium Exhaust Wrap - 2" x 50
Prosport Performance - Corporate Logo
T#:385019
Part#: HEA-WRAPKIT-50
Ships in 1 Business Day
$ 49.99 USD
Free Shipping on orders $49 and up
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$ 49.99 USD
Free Shipping on orders $49 and up
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Constructed for durability with a tight weave, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility. Fiberglass is rated for 1200 degrees, however, this titanium wrap can withstand 1800 degrees!
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Prosport Gold Heat Reflective Tape - 2" x 15'
Prosport Gold Heat Reflective Tape - 2" x 15'
Prosport Performance - Corporate Logo
T#:385020
Part#: HEA-GWRAP-15
Back Ordered
$ 33.99 USD
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$ 33.99 USD
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Constructed of laminated light-weight glass cloth, this gold reflective heat tape is designed to reflect 80% of radiant heat. With excellent pliability, this tape is easy to install. It's as simple as peel and stick.
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Prosport Fiberglass Exhaust Wrap - Black - 2" x 50'
Prosport Fiberglass Exhaust Wrap - Black - 2" x 50'
Prosport Performance - Corporate Logo
T#:385018
Part#: HEA-WRAPKIT-BLK
Ships on Aug 12, 2026
$ 28.00 USD
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$ 28.00 USD
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Constructed of durable, tight-woven fiberglass, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility.
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Prosport Fiberglass Exhaust Wrap - White - 2" x 50'
Prosport Fiberglass Exhaust Wrap - White - 2" x 50'
Prosport Performance - Corporate Logo
T#:385017
Part#: HEA-WRAPKIT-WHT
In Stock at Vendor
$ 31.99 USD
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$ 31.99 USD
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Constructed of durable, tight-woven fiberglass, this heat wrap is designed to maintain proper thermal properties in your vehicles exhaust system. This material was hand selected specifically for it's heat characteristics and flexibility.
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Active Autowerke GESI Catted Downpipes - S63 N63
Active Autowerke GESI Catted Downpipes - S63 N63
For 2014+ model years only
Active Autowerke - Corporate Logo
T#:397488
Part#: 11-041
Ships in 3 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
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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
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Active Autowerke is proud to bring you our hand made Signature S63/N63 Downpipes for the twin-turbo V8 BMW X5M, X6M, 550i, 650i, X5, X6 models. This variant includes a pair of 4.5" ultra high flow GESI catalytic converter that will NOT produce a CEL!
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Active Autowerke S63 N63 A-Flow Catted Downpipes
Active Autowerke S63 N63 A-Flow Catted Downpipes
For 2014+ model years only
For 2014+ model years only
Active Autowerke - Corporate Logo
T#:51075079
Part#: 11-041A
Ships in 3 Business Days
New Item
$ 2,279.00 USD
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$ 2,279.00 USD
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For the BMW owner seeking increased performance without the drawbacks of a "catless" system, the Active Autowerke Aflow Catted Downpipes offer the perfect solution. These downpipes feature high-flow metallic catalytic converters that are specifically designed to maintain exhaust efficiency while preventing the dreaded Check Engine Light (CEL). Unlike track-only pipes that can produce raw fuel odors and cabin drone, the Aflow series maintains a sophisticated, refined exhaust note suitable for a luxury daily driver. Each set is custom-made in-house to ensure an exact bolt-on fit, providing a reliable solution that satisfies both the driver’s demand for power and the vehicle’s onboard diagnostic requirements. Key Features: No CEL Guarantee: Advanced Aflow catalyst technology prevents catalytic efficiency dashboard warnings. Refined Exhaust Note: Provides an aggressive V8 growl while maintaining cabin comfort for daily use. Bolt-On Installation: No cutting or welding required; replaces the bulky factory units directly. Thermal Resilience: Built to withstand the high temperatures generated by the S63 and N63 twin-turbo engines. Safe for Occupants: Reduces harmful emissions and raw exhaust odors compared to catless alternatives. Specifications: Primary Material: Brushed 304 Stainless Steel Fitting: Direct OEM Replacement (Bolt-on) Manufacturing Location: Hand-made in Miami, FL Weight Reduction: Lighter than the heavy, ceramic-core factory catalytic converters Surface Finish: Natural Stainless Lead Time: Custom made-to-order (Approx. 2 weeks)
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Turner Motorsport Double Wall Slash Cut Exhaust Tips - 2.75 Inlet - 3.5 OD - Stepped Left And Stepped Right- Titanium Black Chrome
Turner Motorsport Double Wall Slash Cut Exhaust Tips - 2.75 Inlet - 3...
Packaged by Turner - Corporate Logo
T#:55857771
Part#: 026732TMS03KTKT2
In Stock
New Item
$ 279.99 USD
Free Shipping on orders $49 and up
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$ 279.99 USD
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