Perfect for tuned M278 4.7L V8 Bi-Turbo models
Why These Downpipes?
- ✅ True catless design – massive reduction in backpressure
- ✅ +18–32 whp & +25–40 wtq (with proper tune)
- ✅ Aggressive turbo spool + deep, exotic exhaust note
- ✅ Premium 304 stainless steel, mandrel-bent, TIG welded
- ✅ 100% bolt-on – no cutting, no CEL on most tunes
- ✅ Lifetime warranty on welds & materials
Choose Your Chassis:
E550 • CLS550
2010–2016 W212 E550 • C218 CLS550 • S550 (W221)
Fits all M278 4.6L & 5.5L bi-turbo engines in E/CLS/S-Class.
Shop E550 / CLS550 Downpipes →
S550 (W222)
2014–2017 W222 S550 / S550 4Matic
Specifically tuned fitment for the longer W222 chassis and revised exhaust routing.
Shop W222 S550 Downpipes →
“These downpipes woke my E550 up instantly — the turbo spool is addictive and the power is exactly what the tune needed.”
— Mike K. (E550 • 528 whp on E85)
Questions? Reply to this email or text me directly at [Your Phone].
Happy to help you pick the exact set for your build.
