Scorpion GPF-Back Exhaust System
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Scorpion GPF-Back Exhaust System - Mercedes-AMG A45 S (W177) - 89.9mm
The Scorpion non-resonated GPF-back exhaust for the Mercedes-AMG A45 S (W177) replaces the factory system behind the GPF with large 89.9mm (3.5") T304 stainless pipework. Scorpion lists it as fitting the OE system, and it saves about 4kg over the factory exhaust.
Video
Scorpion exhaust fitting and sound test – Mercedes-AMG A45 S
Options: Valved versions keep an electronic valve so the sound still changes with the drive modes. Non-Valved versions do without the valve for a fixed, simpler set-up.
Note: This version suits UK/EU-import A45 S fitted with a GPF. Australian-delivered A45 S have no GPF – contact us before ordering for an Australian-delivered car. Installation by a professional is recommended.
Features
- 89.9mm (3.5") T304 stainless pipework
- Non-resonated build
- Valved or non-valved versions
- About 4kg lighter than the OE system (Scorpion figure)
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- Scorpion
- Valve
- Non-Valved / Valved
- Part number(s)
- SMBS009 (Valved), SMBS010 (Non-Valved)
Details
- Product type
- GPF-Back
- Pipe diameter
- 89.9mm (3.5")
- Fits to
- OE Only
- Material
- T304 stainless steel
Contents
Scorpion GPF-back system sections
Tailpipes (as selected)
Clamps and fitting hardware
Vehicle fitment
Universal fit: this part suits any car. Check the specifications above for sizes and fittings.
| Make | Model | Chassis | Years | Versions | Engine | Brakes | Position |
|---|
Can’t see your car? Ask us and we’ll check fitment for you.

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