SPOOL Mercedes-AMG E43 Cat-Back Exhaust | Valved 304 Stainless

SPOOL Mercedes-AMG E43 Cat-Back Exhaust

A complete 304 stainless cat-back for the E43. It replaces the restrictive factory rear section and keeps full OEM-style valve control, so the car stays quiet with the valves shut and opens up when they do.

Flow

Both banks merge into a single collector before splitting to the twin rear mufflers. Merging first and splitting late keeps flow stable through the mid-section and evens out the pulses feeding each muffler.

• Twin front inlets merging into one Y-collector
• Mandrel bent tubing keeps full diameter through the bends
• Free-flowing rear mufflers in place of the heavily baffled factory units

Valve Control

Each rear muffler carries its own exhaust valve driven by a vacuum actuator. The system is built around OEM-style valve operation, so the exhaust note stays tied to drive mode instead of running loud all the time. Valve control hardware is included.

Sound

Deeper and fuller than stock with the valves closed, and much harder and more vocal once they open. The merged mid-section gives a cleaner tone than a straight muffler delete, which tends to sound flat and droney.

Construction

• 304 stainless steel throughout
• Full TIG welding
• Braided stainless flex joints on both front inlets
• Band-clamp slip joints so alignment can be dialled in during fitting
• Factory hanger locations retained via welded rod hangers
• Slash-cut stainless outlet tips, one per muffler

Installation

Direct bolt-on to the factory mounting points using the supplied clamping hardware. No cutting or welding, and the OEM system can be refitted at any time.

Fitment

• Mercedes-AMG E43 [M276 3.0L biturbo V6]

Questions on fitment: customer_service@spoolperformance.us

Engineered Value

At Spool Performance, we believe performance parts should be priced based on value. We've gone the extra mile to optimize our manufacturing process, reduce inefficiencies, and control costs without compromising quality. The result is a properly engineered product, built with high-quality materials, offered at a price that actually makes sense.

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.