Custom 300 Cell Catted Downpipe Header System for Mercedes‑Benz E63 E63S AMG GT C 4.0TT
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
Unlock maximum performance from your 4.0L Twin‑Turbo AMG platform with the STRATEC Custom High‑Flow Catted Downpipe & Header System, available in 100‑cell, 200‑cell, or 300‑cell catalytic configurations to match your performance goals.
Engineered for the M177 / M178 4.0TT V8 found in the E63, E63S, AMG GT, and GT‑C models, this system replaces restrictive factory exhaust sections to dramatically improve exhaust flow, turbo efficiency, and throttle response. The optimized header and downpipe design enhances exhaust scavenging, helping deliver stronger mid‑range torque and improved top‑end power.
Precision fabricated from high‑grade stainless steel with mandrel‑bent tubing and TIG‑welded construction, the STRATEC system is built for durability under extreme heat and performance driving conditions.
Catalyst Options
100‑Cell (Race‑Focused)
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Maximum exhaust flow
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Fastest turbo spool
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Loudest, most aggressive exhaust tone
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Intended for high‑performance builds
200‑Cell (Performance Street Setup)
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Significant flow improvement over stock
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Aggressive tone with balanced drivability
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Ideal for tuned street applications
300‑Cell (Refined Performance Upgrade)
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Improved flow while maintaining smoother tone
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Best suited for daily‑driven performance vehicles
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More refined sound profile
Performance Benefits
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Reduced backpressure for improved turbo efficiency
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Faster turbo response
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Increased mid‑range torque and top‑end power
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Enhanced AMG V8 exhaust character
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High‑strength stainless steel construction
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Precision TIG welded fabrication
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Direct bolt‑on installation
Fitment
Mercedes‑Benz E63 AMG W213 – 4.0TT V8
Mercedes‑Benz E63S AMG W213 – 4.0TT V8
Mercedes‑AMG GT – 4.0TT V8
Mercedes‑AMG GT‑C – 4.0TT V8
Model Years 2014–2022
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.