Mercedes CLS63/CLS63S AMG Catless Downpipe | WSTN Performance (M157 W218/W219)

70mm Straight-Through Flow. Zero Compromise for the AMG V8. The Mercedes-Benz CLS63 AMG was never meant to be quiet and neither is this. WSTN Performance's 70mm straight downpipe replaces the factory restriction of the twin-turbocharged M157 (W218), unlocking the full acoustic and performance potential of one of AMG's most celebrated V8s. Built to order from 304 stainless steel and personally quality-checked in Perth before worldwide dispatch via DHL, this is a direct bolt-on upgrade engineered for those who know what the CLS63 is capable of. Why Upgrade? ✅ Maximum Exhaust Flow: 70mm straight-through construction completely eliminates factory restriction no compromises, no restrictions. ✅ AMG V8 Sound: Deep, raw exhaust tone replaces the factory-muffled note. M157 (5.5L TT) respond dramatically. ✅ Heat Shield Included: Factory-spec heat shield protects surrounding components and maintains professional fitment quality. ✅ Direct Bolt-On: Engineered to OEM mounting points on both W219 and W218 platforms no cutting, no welding. ✅ Perth Quality Checked: Every unit is personally inspected before dispatch. Shipped worldwide via DHL. Key Features & Specs Material: 304 Stainless Steel corrosion resistant, built to last Pipe Diameter: 70mm / 2.75-inch straight-through construction Construction: Precision mandrel-bent, TIG-welded joints Finish: Brushed 304 stainless clean, purposeful look Heat Shield: Included protects surrounding components Configuration: Catless straight-through maximum exhaust flow Fitment & Compatibility ✔️ Mercedes-Benz CLS63 AMG (W218) 2011–2017 (M157, 5.5L V8 TT) ✔️ Mercedes-Benz CLS63S AMG (W218) 2013–2017 (M157, 5.5L V8 TT) Direct OEM-spec replacement for W219 and W218 CLS63 AMG variants. Fits M157 twin-turbocharged configurations. Check fitment before ordering. Technical Note Emissions: Catless straight-through intended for track and competition use. Buyer is responsible for local emissions compliance. What's In the Box 1 x WSTN Performance 70mm Straight Downpipe with Heat Shield Installation Difficulty: 4/5 Requires workshop lift and AMG exhaust experience Time Estimate: 2–4 Hours Mounting Type: Direct bolt-on to factory exhaust manifold flanges Warranty / Shipping DISCLAIMER WSTN Performance components are designed for track and competition use. To protect your build and ensure a perfect finish, we recommend professional installation by a certified specialist/workshop. It is the buyer's responsibility to ensure modifications comply with local regulations. WARRANTY We stand behind every product we sell. All WSTN Performance products carry a 1 year WSTN Performance warranty as standard. This covers any manufacturing defects, giving you total peace of mind that your upgrade is built to last. View our full Warranty policy page here. SHIPPING We offer tracked worldwide shipping on our entire catalogue. Most of our products are built-to-order: hand-crafted to your engine code, personally quality-checked in Perth WA, and dispatched worldwide. In-stock items dispatch within 2–4 days. All items arrive with full tracking. View our full Shipping policy page here. RETURNS We offer returns on all products if items are damaged or there is something wrong. If we ever make a mistake, we'll cover the return shipping to make it right. View our full Return policy page here. SUPPORT Need a hand with fitment, shipping, or a return? Our Perth-based team is here to help you get your build perfect. Email: contact@wstnperformance.com Sound Clip