{"product_id":"catless-downpipes-for-mercedes-benz-s63-amg-w222-m157","title":"W222 S63 AMG M157 Catless Downpipes – Premium Stainless Steel High-Flow Set","description":"\u003cdiv style=\"max-width: 860px; margin: 0 auto; font-family: -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif; line-height: 1.7; color: #222;\"\u003e\n\u003cp style=\"font-size: 16.5px; margin-bottom: 28px;\"\u003eFor the serious W222 S63 owner who wants to unlock the full potential of the M157 BiTurbo V8. These premium stainless steel catless downpipes dramatically reduce exhaust restriction, deliver a deeper, more aggressive AMG exhaust note, and provide noticeable improvements in turbo spool and mid-range response.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 20px; margin: 32px 0 12px;\"\u003eWhat's Included\u003c\/h2\u003e\n\u003cul style=\"margin: 0 0 24px 20px; padding: 0; list-style: none;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Complete left + right catless downpipe set\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Premium V-band clamps and mounting hardware\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Gaskets included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 20px; margin: 32px 0 12px;\"\u003eKey Benefits\u003c\/h2\u003e\n\u003cul style=\"margin: 0 0 24px 20px; padding: 0; list-style: none;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Significant reduction in exhaust backpressure for faster turbo spool and stronger mid-range power\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Deeper, more aggressive AMG V8 sound with rich crackles and pops when tuned\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Premium 304 stainless steel construction with back-purged TIG welds for long-term reliability\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• True bolt-on fitment — no cutting or modifications required\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e• Designed for serious S63 builds — the flagship Mercedes-AMG sedan deserves flagship performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size: 20px; margin: 32px 0 12px;\"\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 12px; font-size: 15.5px;\"\u003eMercedes-AMG S63 (W222) 2014–2017 with M157 BiTurbo 5.5L V8\u003c\/p\u003e\n\u003cp style=\"font-size: 14.5px; color: #666;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Professional installation recommended. Tuning highly advised to maximize gains and prevent check engine lights.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 20px; margin: 32px 0 12px;\"\u003eWhy S63 Owners Choose These Downpipes\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 24px; font-size: 15.5px;\"\u003eThe W222 S63 is already a flagship grand tourer. These catless downpipes transform it into a true performance machine — delivering the sound, response, and power the M157 V8 was always capable of. Perfect for owners who want to take their S-Class to the next level without compromising daily drivability.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 20px; margin: 32px 0 12px;\"\u003eInstallation \u0026amp; Notes\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 24px; font-size: 15.5px;\"\u003eDirect bolt-on replacement. Average install time: 2–3 hours. Professional installation strongly recommended. Re-check for leaks after the first heat cycle.\u003c\/p\u003e\n\u003ch2 style=\"font-size: 20px; margin: 32px 0 12px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 8px;\"\u003e\u003cstrong\u003eQ: Will these throw a check engine light?\u003c\/strong\u003e\u003cbr\u003eA: Yes, in most cases without proper ECU tuning. We recommend pairing these downpipes with custom tuning for best results and to clear codes.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 8px;\"\u003e\u003cstrong\u003eQ: How much power can I expect?\u003c\/strong\u003e\u003cbr\u003eA: Noticeable gains in mid-range torque and throttle response. Exact numbers depend on your tune and supporting modifications.\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 8px;\"\u003e\u003cstrong\u003eQ: Are these street legal?\u003c\/strong\u003e\u003cbr\u003eA: No. These are off-road \/ competition use only.\u003c\/p\u003e\n\u003cdiv style=\"margin-top: 40px; text-align: center; font-size: 15px; color: #555;\"\u003e\n\u003cstrong\u003ebenzunited parts • Quality Mercedes \u0026amp; AMG Components\u003c\/strong\u003e\u003cbr\u003eExact item shown • Proudly tested on multiple W222 S63 vehicles • Buyer responsible for final fitment verification\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":46598480134319,"sku":null,"price":849.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/w222-s63-amg-m157-catless-downpipes-stainless.jpg?v=1772305144","url":"https:\/\/benzunitedparts.com\/products\/catless-downpipes-for-mercedes-benz-s63-amg-w222-m157","provider":"BenzUnited Parts","version":"1.0","type":"link"}