Scorpion Rear Silencer Back Box (Axle-Back) Exhaust for BMW M3 E46 3.2 S54 2001–2006 | Direct Fit Rear Muffler / Rear Section | 63.5mm (2.5") | Fits OEM or Scorpion Centre Section | UK Made Performance Tail Section

Performance rear box upgrade for BMW M3 E46 2001 to 2006

Transform your straight six soundtrack and unlock real performance with this hand built in England rear section. This premium back box is engineered for the M3 E46 and mates with the factory mid pipe or a Scorpion centre section, giving a direct fit rear muffler solution that delivers power, response and a purposeful tone.

• Compatibility: fits to OEM centre section or Scorpion mid section
• Pipe size: 63.5 mm / 2.5 inch for improved gas flow
• Weight: OE 24.0 kg vs Scorpion 16.2 kg — save 7.8 kg
• Power: OE 303.3 bhp vs Scorpion 313.7 bhp for a noticeable gain

We have fitted this axle back on customer cars and the feedback is consistently positive. Sharper throttle response, freer revving feel and a richer, motorsport inspired note that complements the S54 without being overbearing. It is widely chosen by tuning enthusiasts and club drivers who want a quality rear silencer that enhances both driveability and presence.

Why choose this rear section for your M3

• Hand crafted in the UK with premium design and construction
• Direct bolt-on rear muffler replacement for 2001 to 2006 models
• Lightweight back box reduces mass over the rear axle for improved balance
• Optimised 63.5 mm pipework supports healthy flow and performance
• Proven dyno increase and tangible on-road improvements

Search-friendly fitment and keywords

BMW M3 E46 exhaust upgrade. Rear muffler. Back box. Axle back exhaust. Rear section. Performance tail section. M3 3.2 S54 exhaust. BMW E46 M3 backbox replacement. Performance rear silencer. UK made exhaust for BMW M3 E46 2001, 2002, 2003, 2004, 2005, 2006.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. For a fitting quote or advice, email info@mjmodifications.co.uk.