Scorpion Half System Axle-Back Rear Exhaust Back Box for BMW M3 G80 & M4 G82 (incl. Competition) 2021+ | G8x Muffler/Rear Silencer Upgrade | Ascari 114mm Tips | 70mm (2.75") Pipework | PN SBM084CF

BMW M3 G80 and M4 G82 rear section exhaust upgrade for 2021-on including Competition models

Unlock a richer soundtrack and a sharper drive with this premium rear section designed for the BMW M3 G80 and BMW M4 G82. This performance-focused axle-back upgrade delivers a deeper, sportier tone while trimming unwanted mass from the back of the car. Ideal for enthusiasts wanting a high quality back box and tailpipe upgrade that enhances character without compromising day-to-day usability.

Key details

• Vehicle compatibility: BMW M3 G80 and BMW M4 G82, 2021-on, including Competition
• Manufacturer part number: SBM084CF
• Pipework size: 70 mm (2.75 inch)
• Tailpipes: Ascari 114 mm
• Weight comparison: factory system 21.6 kg vs this system 17.7 kg
• Approximate saving over stock: 3.9 kg

Why enthusiasts choose this upgrade

• Enhanced sound quality for G80 and G82 platforms with a refined yet assertive tone
• Optimised flow characteristics courtesy of 70 mm pipework for improved responsiveness
• Ascari 114 mm tailpipes fill the bumper cut-outs for a purposeful OEM-plus look
• Weight reduction at the rear improves the car’s balance and driving feel

Real-world feedback

We have fitted this system to customer cars and the response has been excellent. Owners report a stronger, more engaging exhaust note and appreciate the premium finish and fit. It is a favourite upgrade for daily-driven and track-day G8x cars alike.

Fitment and installation

Designed for the specified BMW M3 and BMW M4 models for a straightforward installation. For a seamless experience, book professional fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote.

Perfect for these searches

BMW M3 G80 exhaust upgrade, BMW M4 G82 exhaust upgrade, G80 rear exhaust, G82 rear exhaust, axle-back system, back box for BMW M3, back box for BMW M4, performance rear silencer, sports tailpipes 114 mm, Ascari tips, BMW Competition exhaust, G8x exhaust system, BMW M3 muffler upgrade, BMW M4 muffler upgrade, BMW G80 sound upgrade, BMW G82 sound upgrade.

Part number: SBM084CF