Mercedes-AMG A45S / CLA45S / GLA45 2.0T Downpipe Exhaust System (2020-2026, W177/C118)

Maximum Flow & M139 Turbo Spool — CEES Mercedes-Benz W177 A45S / C118 CLA45S / H247 GLA45 2.0T Downpipe Exhaust System

Unleash the full acoustic and power potential of your 2020–2026 Mercedes-AMG A45S (W177), CLA45 / CLA45S (C118), and GLA45 (H247) equipped with the hand-crafted M139 2.0T engine. The CEES high-performance downpipe replaces the restrictive factory catalytic converter, drastically reducing turbo backpressure and lowering exhaust gas temperatures (EGT) for faster turbo spool, sharper throttle response, and a fierce AMG exhaust crackle.

🚀 Engineering Highlights

• Optimized M139 Exhaust Velocity: Oversized smooth mandrel-bent tubing reduces backpressure directly off the twin-scroll turbocharger, improving low-to-mid range boost response.
• Enhanced AMG Soundtrack: Produces a deeper, more aggressive tone with pronounced upshift pops and overrun crackles while maintaining daily refinement.
• Master-Tier SS304 Craftsmanship: Expertly TIG-welded from premium heavy-duty T304 Stainless Steel for extreme thermal durability and corrosion resistance.
• Precision Bolt-On Fitment: Engineered via 3D scanning to fit OEM mounting points, brackets, and hangers without requiring cutting or modification.

📊 Technical Specifications

✨ Bespoke Your Build — Chat with Our Specialists on WhatsApp

• WhatsApp: +86 15626172519
• Email: cees-exhaust@qq.com

📦 Shipping & Lead Times

• 🛠️ Production Time: Built to order in 2–4 weeks
• 🚚 Shipping: Express air freight via DHL / FedEx / UPS — estimated 7–15 business days door-to-door

FAQ

1. Will this downpipe cause a Check Engine Light (CEL)?

Because high-flow or catless downpipes alter exhaust flow, a Stage 2 ECU tune or an O2 sensor spacer is recommended to prevent a CEL and achieve maximum power gains.

2. Does it fit A45S, CLA45S, and GLA45?

Yes. All W177 A45/A45S, C118 CLA45/CLA45S, and H247 GLA45 models share the identical M139 2.0T engine architecture and downpipe routing.

3. What are the performance gains?

Removing the restrictive factory downpipe allows the twin-scroll turbocharger to spool up significantly faster, delivering sharper throttle response and noticeable horsepower and torque increases across the rev range.

4. Are you a direct manufacturer?

Yes — as a direct manufacturer based in Guangdong, China, we eliminate middlemen to deliver premium, track-tested exhaust systems with strict in-house quality control and competitive pricing.