Description
Upgrade your Mercedes-AMG E43 with the SPOOL Mercedes-AMG E43 Cat-Back Exhaust, a complete performance exhaust system engineered from 304 stainless steel to improve exhaust flow, sound, and overall character while retaining OEM-style exhaust valve control.
Designed as a direct replacement for the restrictive factory rear exhaust section, this cat-back system features a carefully engineered merged mid-section, free-flowing rear mufflers, mandrel-bent tubing, and factory-style mounting points. The result is a deeper, fuller exhaust tone with increased volume and aggression when the valves open, while maintaining a more controlled sound when the valves are closed.
Performance Flow Design
The SPOOL E43 Cat-Back Exhaust is designed around a specific flow path that prioritizes stable exhaust flow through the mid-section. Both exhaust banks merge into a single collector before splitting back out to the twin rear mufflers. Merging first and splitting late helps stabilize flow through the center section while evening out the exhaust pulses entering each rear muffler.
- Twin front inlets merge into a single Y-collector
- Mandrel-bent tubing maintains the full tubing diameter through bends for improved exhaust flow
- Free-flowing rear mufflers replace the heavily baffled factory muffler units
OEM-Style Exhaust Valve Control
Each rear muffler features its own exhaust valve operated by a vacuum actuator. The system is engineered around OEM-style valve operation, allowing the exhaust character to remain connected to the vehicle's drive-mode behavior rather than producing an excessively loud exhaust note at all times.
Valve control hardware is included with the exhaust system.
With the exhaust valves closed, the system maintains a more controlled exhaust character. Once the valves open, the system provides a substantially louder, harder, and more vocal exhaust note.
Exhaust Sound
The SPOOL Mercedes-AMG E43 Cat-Back Exhaust produces a deeper and fuller sound than the factory exhaust with the valves closed, while becoming significantly more aggressive and vocal once the valves open.
The merged mid-section is designed to provide a cleaner and more refined exhaust tone compared with a simple straight muffler-delete setup. This helps avoid the flat, droning character that can commonly occur with basic muffler-delete exhaust configurations.
Premium 304 Stainless Steel Construction
The entire SPOOL E43 cat-back exhaust system is constructed from 304 stainless steel for durability and long-term performance.
- 304 stainless steel construction throughout
- Full TIG welding
- Braided stainless steel flex joints on both front inlets
- Band-clamp slip joints allow alignment to be adjusted during installation
- Factory hanger locations are retained through welded rod hangers
- Slash-cut stainless steel exhaust outlet tips, with one outlet tip per muffler
Direct Bolt-On Installation
The SPOOL Mercedes-AMG E43 Cat-Back Exhaust is designed as a direct bolt-on replacement using the factory mounting points.
The supplied clamping hardware allows the system to be installed without cutting or welding. The factory exhaust system can also be reinstalled at any time.
- Direct bolt-on installation
- Uses factory mounting points
- Supplied clamping hardware included
- No cutting required
- No welding required
- OEM exhaust system can be refitted at any time
Fitment
This SPOOL Cat-Back Exhaust is specifically designed for the following application:
- Mercedes-AMG E43
- Engine: M276 3.0L Biturbo V6
Verify your vehicle's exact application and configuration before ordering to ensure proper fitment.
Engineered Value
SPOOL Performance believes performance parts should be priced according to their actual value. The manufacturing process has been optimized to reduce inefficiencies and control production costs without compromising product quality or engineering.
The result is a properly engineered performance exhaust system manufactured from high-quality materials and offered at a price designed to provide strong value.
Legal Disclaimer
This product is intended solely for closed-course competition or off-road use and is not legal for use on public roads or highways.
This product modifies or replaces emissions-related equipment and is not compliant with EPA or CARB emissions requirements. Use of this product on vehicles operated on public roads is prohibited.
By purchasing this product, the buyer acknowledges and assumes all responsibility for proper use and legal compliance.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
