{"product_id":"bmw-g90-g99-m5-catless-downpipe-with-heat-shield","title":"BMW G90\/G99 M5 Catless Downpipe With Heat Shield","description":"\u003ch1\u003eBMW G90\/G99 M5 Catless Downpipe with Heat Shield\u003c\/h1\u003e\n\u003cp\u003eUnlock the true performance potential of your BMW G90\/G99 M5 with this Catless Downpipe featuring integrated thermal heat shielding — engineered to maximise exhaust flow, improve turbocharger efficiency, and deliver an aggressive V8 soundtrack worthy of BMW's latest flagship M platform.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for the twin-turbocharged 4.4L S68 V8 engine, this high-flow catless downpipe eliminates the restrictive factory catalytic converters, allowing exhaust gases to exit more efficiently and reducing backpressure throughout the system. The result is faster turbo spool, sharper throttle response, increased power potential, and a significantly enhanced exhaust note.\u003c\/p\u003e\n\u003cp\u003eConstructed from premium 304 stainless steel and wrapped in high-temperature thermal shielding, this downpipe helps reduce engine bay temperatures while maintaining durability under extreme heat and performance conditions. Whether paired with a factory exhaust system or a full aftermarket setup, this upgrade provides the foundation required for serious performance gains.\u003c\/p\u003e\n\u003cp\u003ePerfect for Stage 2 applications and high-performance builds, this downpipe delivers the airflow and efficiency required to unlock the full capability of the S68 platform.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003ch3\u003eHigh-Flow Catless Design\u003c\/h3\u003e\n\u003cp\u003eRemoves restrictive factory catalytic converters for maximum exhaust flow and performance.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Thermal Heat Shielding\u003c\/h3\u003e\n\u003cp\u003eHigh-temperature heat shielding helps reduce radiant heat and protects surrounding engine bay components.\u003c\/p\u003e\n\u003ch3\u003ePremium 304 Stainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eManufactured from corrosion-resistant stainless steel for exceptional durability and long-term reliability.\u003c\/p\u003e\n\u003ch3\u003eImproved Turbo Efficiency\u003c\/h3\u003e\n\u003cp\u003eReduced exhaust backpressure allows the turbochargers to spool faster and operate more efficiently.\u003c\/p\u003e\n\u003ch3\u003ePrecision TIG Welded\u003c\/h3\u003e\n\u003cp\u003eHigh-quality welds engineered to withstand extreme exhaust temperatures and demanding performance use.\u003c\/p\u003e\n\u003ch3\u003eDirect Bolt-On Fitment\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for the BMW G90 and G99 M5 using factory mounting locations.\u003c\/p\u003e\n\u003ch2\u003ePerformance Benefits (When Tuned)\u003c\/h2\u003e\n\u003cp\u003e• Increased horsepower and torque potential\u003cbr\u003e• Faster turbo spool and improved throttle response\u003cbr\u003e• Reduced exhaust backpressure\u003cbr\u003e• Enhanced turbocharger efficiency\u003cbr\u003e• More aggressive and pronounced exhaust note\u003cbr\u003e• Ideal foundation for Stage 2 and higher-performance builds\u003c\/p\u003e\n\u003cp\u003ePerformance gains will vary depending on tuning, fuel quality, and supporting modifications.\u003c\/p\u003e\n\u003ch2\u003eSound Characteristics\u003c\/h2\u003e\n\u003cp\u003eCompared to the factory downpipes, this catless system typically delivers:\u003c\/p\u003e\n\u003cp\u003e• Deeper and more aggressive V8 exhaust tone\u003cbr\u003e• Increased turbo whistle and induction acoustics\u003cbr\u003e• Louder cold starts\u003cbr\u003e• More pronounced pops and overrun characteristics (when tuned)\u003cbr\u003e• Enhanced overall exhaust presence throughout the rev range\u003c\/p\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eBMW G90 M5 Sedan (2025+)\u003cbr\u003eBMW G99 M5 Touring (2025+)\u003c\/p\u003e\n\u003cp\u003e4.4L Twin-Turbocharged S68 V8 Hybrid Powertrain\u003c\/p\u003e\n\u003ch2\u003ePlease Note\u003c\/h2\u003e\n\u003cp\u003eThis is a catless motorsport product intended for off-road and motorsport use only.\u003c\/p\u003e\n\u003cp\u003eProfessional installation is strongly recommended.\u003c\/p\u003e\n\u003cp\u003eECU tuning may be required to fully utilise the performance benefits and prevent potential check engine lights associated with catalyst removal.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Proven Performance Parts\u003c\/h2\u003e\n\u003cp\u003eWe specialise in high-performance parts for European vehicles — including Volkswagen GTI \u0026amp; R models, Audi S\/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.\u003c\/p\u003e","brand":"Proven Performance Parts","offers":[{"title":"Default Title","offer_id":52343431299354,"sku":null,"price":1090.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/ShopifyPOST2_2.png?v=1781202679","url":"https:\/\/provenperformanceparts.com.au\/products\/bmw-g90-g99-m5-catless-downpipe-with-heat-shield","provider":"Proven Performance Parts","version":"1.0","type":"link"}