About this guide
The W205-generation C43 AMG (2016-2018) and later W205/S205 facelift models share the M276 biturbo V6, and several established exhaust brands build parts specifically for this platform rather than just the more common C63. These are real, currently-listed systems and downpipes for the C43 — check whether you want an emissions-legal catted downpipe or a catless race-only version before buying.
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The picks, in detail
Akrapovic Evolution Line (W205 C43)
Akrapovic sells parts specifically listed for the W205 C-Class including the C43 3.0L, in stainless or titanium with carbon-fiber tailpipes.
- Austenitic stainless steel construction
- Optional titanium version
- Carbon fiber tailpipes
- Twin central link-pipe layout
- Established motorsport-derived brand
- Meaningful weight reduction over stock
- Premium pricing typical of Akrapovic systems
AWE Tuning Exhaust Suite (C43/C450/C400)
AWE builds an exhaust suite explicitly covering the C43/C450/C400 coupe and sedan platform, a common choice among W205 owners for a track-tunable sound.
- Track and Touring edition options
- Coupe and sedan fitment
- Stainless steel construction
- US-based brand with strong support/warranty reputation
- Multiple sound-level options (Touring vs. Track)
- Track edition may be louder than daily-driving preference
Fi Exhaust Valvetronic System
A T304 stainless valvetronic system with a Bluetooth app-controlled valve, sold specifically for the W205 C43.
- T304 stainless steel
- Valvetronic (electronically controlled) valves
- Ultra-high-flow and 200-cell downpipe options
- Adjustable sound via valve control
- Downpipe options for both emissions-legal and race use
- App/electronic valve control adds a failure point vs. a passive system
Armytrix Valvetronic Exhaust + Downpipe
Armytrix sells a downpipe and valvetronic exhaust for the W205 C400/C450/C43 platform, with Bluetooth/OBDII remote valve control.
- Flexible downpipe technology to reduce under-hood heat
- Corrosion-resistant construction
- Bluetooth OBDII app valve control
- Remote valve control via smartphone app
- Reduces under-hood temperatures
- Requires OBDII module for full app functionality
Eisenmann Performance Exhaust (W205 C43 S AMG)
A German-made 304 stainless system offered in Sport or Race sound levels, built specifically for the W205 C43 S AMG.
- 100% T304/T306 stainless steel
- Sport or Race sound tuning options
- Handmade in Germany
- Sound level choice matched to daily-driving vs. track use
- Established German aftermarket manufacturer
- Import lead times/pricing typical of German aftermarket parts
Capristo Valved Exhaust System (S205/W205 C43)
A T309 stainless valved system with a CES3 remote controller and RDS radio display integration, sold for the C43 T-model and sedan.
- T309 stainless steel construction
- CES3 valve controller with remote
- Available with or without ECE approval
- Remote-controlled valve for quiet/loud switching on demand
- Available in an ECE-approved (street-legal) configuration
- Highest complexity system on this list (electronic valve controller)
RedStar Exhaust M276 Downpipes
Downpipes specifically engineered for the M276 engine shared across C43/C400/C450/E43/E400/E450, for owners upgrading the downpipe rather than the full system.
- Direct OEM-style fit
- Precision-engineered for the M276 biturbo V6
- Improved exhaust flow over stock
- Focused downpipe-only option if you’re not replacing the full exhaust
- Fitment shared across multiple M276-equipped Mercedes models
- Downpipe only — doesn’t address rear muffler sound
What each one costs
Typical price, cheapest first. Tap a name to jump to that pick and its buy link.
Compare any three
| Akrapovic Evolution Line (W205 C43) | AWE Tuning Exhaust Suite (C43/C450/C400) | Fi Exhaust Valvetronic System | |
|---|---|---|---|
| Price | $2,500-$4,000 | $1,800-$2,800 | $2,000-$3,200 |
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Buying tips
- Decide between a catted (emissions-legal) and catless (race-only) downpipe before buying — several of these brands sell both versions for the C43.
- A downpipe-only upgrade (RedStar) changes sound and flow less dramatically than a full cat-back system — pick based on how much of a sound/power change you actually want.
- Valvetronic systems (Fi Exhaust, Armytrix, Capristo) let you keep a quiet commute and a loud track mode, but add an electronic component that can fail — a passive system (Eisenmann, AWE) is simpler if you don’t need that flexibility.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.