{"product_id":"bmw-m3-m4-g80-g82-g83-axle-back-stainless-steel-exhaust-system","title":"Project Gamma BMW M3\/M4 G80 G82 G83 S58 Stainless Steel Valved Axle-Back Exhaust System","description":"\u003ch2 data-section-id=\"1oefdpd\" data-start=\"0\" data-end=\"71\" class=\"PDq2pG_selectionAnchorContainer\"\u003eBMW M3\/M4 (G80 | G82 | G83) Axle Back Stainless Steel Exhaust System\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"73\" data-end=\"413\"\u003eUpgrade the sound, performance, and rear-end appearance of your BMW G80 M3 or G82\/G83 M4 with the \u003cstrong data-start=\"171\" data-end=\"229\"\u003eProject Gamma Axle Back Stainless Steel Exhaust System\u003c\/strong\u003e. Designed specifically for the S58-powered G8X platform, this axle-back system delivers a deeper, more aggressive exhaust tone while maintaining factory-style comfort and drivability.\u003c\/p\u003e\n\u003cp data-start=\"415\" data-end=\"820\"\u003eThe Project Gamma axle-back exhaust features a \u003cstrong data-start=\"462\" data-end=\"499\"\u003evalved performance muffler design\u003c\/strong\u003e that works with the factory valve system, allowing you to keep full control over your exhaust sound. With the valves closed, the system provides a cleaner and more refined tone for daily driving. When the valves open, the exhaust becomes louder, sportier, and more aggressive, giving your M3 or M4 the sound it deserves.\u003c\/p\u003e\n\u003cp data-start=\"822\" data-end=\"1125\"\u003eConstructed from high-quality stainless steel, this system improves exhaust flow by reducing factory restriction while providing excellent durability and corrosion resistance. The quad-tip design also enhances the rear appearance of the vehicle, giving it a more aggressive and performance-focused look.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"1127\" data-end=\"1143\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1145\" data-end=\"1670\"\u003e\n\u003cli data-section-id=\"4n9md\" data-start=\"1145\" data-end=\"1185\"\u003eDesigned for BMW G80 M3 and G82\/G83 M4\u003c\/li\u003e\n\u003cli data-section-id=\"mp2099\" data-start=\"1186\" data-end=\"1228\"\u003eFits S58 3.0L twin-turbo engine vehicles\u003c\/li\u003e\n\u003cli data-section-id=\"1sh3cji\" data-start=\"1229\" data-end=\"1271\"\u003eAxle-back stainless steel exhaust system\u003c\/li\u003e\n\u003cli data-section-id=\"152jca1\" data-start=\"1272\" data-end=\"1319\"\u003eValved design retains factory valve operation\u003c\/li\u003e\n\u003cli data-section-id=\"1udwxqn\" data-start=\"1320\" data-end=\"1361\"\u003eDeeper and more aggressive exhaust tone\u003c\/li\u003e\n\u003cli data-section-id=\"15p7arn\" data-start=\"1362\" data-end=\"1404\"\u003eQuiet and refined when valves are closed\u003c\/li\u003e\n\u003cli data-section-id=\"dzv67w\" data-start=\"1405\" data-end=\"1453\"\u003eLouder and sportier sound when valves are open\u003c\/li\u003e\n\u003cli data-section-id=\"i1fgac\" data-start=\"1454\" data-end=\"1509\"\u003eImproved exhaust flow compared to the factory muffler\u003c\/li\u003e\n\u003cli data-section-id=\"6g6e1r\" data-start=\"1510\" data-end=\"1548\"\u003eDurable stainless steel construction\u003c\/li\u003e\n\u003cli data-section-id=\"11vhd3t\" data-start=\"1549\" data-end=\"1600\"\u003eQuad-tip rear design for an aggressive appearance\u003c\/li\u003e\n\u003cli data-section-id=\"rr5s1i\" data-start=\"1601\" data-end=\"1670\"\u003eGreat upgrade for stock, tuned, Stage 1, Stage 2, and custom builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"flhnjv\" data-start=\"1672\" data-end=\"1695\"\u003eSound \u0026amp; Performance\u003c\/h3\u003e\n\u003cp data-start=\"1697\" data-end=\"2040\"\u003eThe factory exhaust system on the G80 M3 and G82\/G83 M4 can feel restricted, especially for owners looking for more sound and character from the S58 engine. The Project Gamma axle-back system helps reduce exhaust restriction through a performance muffler design, improving exhaust flow and creating a sharper, more exciting driving experience.\u003c\/p\u003e\n\u003cp data-start=\"2042\" data-end=\"2191\"\u003eThe valved setup gives you the best of both worlds: a comfortable tone for normal driving and a more aggressive sound when you want to enjoy the car.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1wwzv67\" data-start=\"2193\" data-end=\"2204\"\u003eFitment\u003c\/h3\u003e\n\u003cul data-start=\"2206\" data-end=\"2505\"\u003e\n\u003cli data-section-id=\"szz98r\" data-start=\"2206\" data-end=\"2224\"\u003e2021+ BMW G80 M3\u003c\/li\u003e\n\u003cli data-section-id=\"w5uc1q\" data-start=\"2225\" data-end=\"2255\"\u003e2021+ BMW G80 M3 Competition\u003c\/li\u003e\n\u003cli data-section-id=\"xtp296\" data-start=\"2256\" data-end=\"2293\"\u003e2021+ BMW G80 M3 Competition xDrive\u003c\/li\u003e\n\u003cli data-section-id=\"t00spa\" data-start=\"2294\" data-end=\"2312\"\u003e2021+ BMW G82 M4\u003c\/li\u003e\n\u003cli data-section-id=\"vjsr7f\" data-start=\"2313\" data-end=\"2343\"\u003e2021+ BMW G82 M4 Competition\u003c\/li\u003e\n\u003cli data-section-id=\"1trldhr\" data-start=\"2344\" data-end=\"2381\"\u003e2021+ BMW G82 M4 Competition xDrive\u003c\/li\u003e\n\u003cli data-section-id=\"17ampqy\" data-start=\"2382\" data-end=\"2412\"\u003e2021+ BMW G83 M4 Convertible\u003c\/li\u003e\n\u003cli data-section-id=\"3z7ulr\" data-start=\"2413\" data-end=\"2455\"\u003e2021+ BMW G83 M4 Competition Convertible\u003c\/li\u003e\n\u003cli data-section-id=\"56oikb\" data-start=\"2456\" data-end=\"2505\"\u003e2021+ BMW G83 M4 Competition xDrive Convertible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2507\" data-end=\"2547\"\u003e\u003cstrong data-start=\"2507\" data-end=\"2518\"\u003eEngine:\u003c\/strong\u003e S58 3.0L Twin-Turbo Inline-6\u003c\/p\u003e\n\u003ch3 data-section-id=\"pzbduy\" data-start=\"2549\" data-end=\"2570\"\u003eInstallation Note\u003c\/h3\u003e\n\u003cp data-start=\"2572\" data-end=\"2783\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eProfessional installation is recommended for proper fitment, alignment, and valve operation. Depending on the setup and connection to factory or aftermarket midpipes, minor adjustments or cutting may be required.\u003c\/p\u003e","brand":"ProjectGamma","offers":[{"title":"Default Title","offer_id":48988098789595,"sku":"G80AXBCK","price":1399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/7500\/2261\/files\/BMW_M3M4_G80_G82_G83_Axle_Back_Stainless_Steel_Exhaust_System.jpg?v=1778191956","url":"https:\/\/shopprojectgamma.com\/products\/bmw-m3-m4-g80-g82-g83-axle-back-stainless-steel-exhaust-system","provider":"ProjectGamma","version":"1.0","type":"link"}