M157 Catless Downpipes – E63 / CLS63 (RWD & 4MATIC) · S63 AMG
This collection features catless downpipes engineered specifically for Mercedes-AMG vehicles equipped with the M157 5.5L BiTurbo V8. Designed to dramatically reduce exhaust restriction after the turbochargers, these downpipes improve turbo response, mid-range torque, and high-RPM power while maintaining proper fitment for each chassis and drivetrain configuration.
Separate configurations are available for E63 and CLS63 AMG in both RWD and 4MATIC layouts, as well as S63 AMG models. Each product in this collection is built for its specific platform to ensure correct routing, clearance, and installation.
What These Downpipes Deliver
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Reduced exhaust backpressure for faster turbo spool and stronger torque
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Improved throttle response and power delivery across the RPM range
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Higher power ceiling when paired with ECU tuning
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Deeper, more aggressive exhaust tone under load
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Direct bolt-on fitment for the intended chassis and drivetrain
Fitment Notes
- E63 AMG & CLS63 AMG are available in RWD and 4MATIC-specific versions
- S63 AMG uses a single drivetrain configuration
- Each listing specifies the correct chassis and drivetrain compatibility
For best results, these downpipes are intended to be paired with a custom ECU calibration. Proper tuning allows the engine to fully take advantage of the reduced restriction and prevents unwanted warning lights.
