Remus Valved Axle-Back Rear Silencer/Back Box (Muffler) - Quad Exit 102mm Chrome Tips - BMW Z4 G29 M40i Roadster 3.0 B58 2018-on - Performance Sport Exhaust Upgrade, Quad Tailpipe Conversion

Performance Quad Exit Back Box for BMW Z4 G29 M40i

Transform the look and sound of your BMW Z4 with this premium rear section upgrade featuring four polished 102 mm outlets. Designed for the G29 M40i, this valved axle-back delivers a deeper, richer soundtrack and a stunning quad-tailpipe finish that elevates the rear end instantly. We have fitted this system in-house and our customers have been delighted with the refined tone and top-tier build quality.

Perfect for drivers looking for a high quality sports exhaust upgrade without compromising everyday comfort, this rear box integrates with the car’s factory electronics for seamless valve operation. A proven choice for enthusiasts seeking a tasteful sound enhancement and a standout quad setup.

• Quad exit 102 mm polished chrome tips for an aggressive, OEM-plus appearance
• Valved rear section using the vehicle’s native control for comfort and sport driving
• Axle-back configuration engineered for the G29 platform
• Crisp, sporty tone under load with a refined character at cruise
• Direct integration to the original system at the specified cut point
• Ideal upgrade for B58-powered Z4 owners seeking a premium sound and look

Fitment

Suitable for BMW Z4 G29 M40i models from 2018 onwards with the B58 engine. The factory exhaust requires cutting at the designated join to install this rear section.

Valve Control

The exhaust flaps are operated via the car’s onboard electronics, maintaining full functionality through the original controls.

Why choose this upgrade

• Enhances exhaust note without turning the cabin into a drone-fest
• Premium European performance brand trusted by enthusiasts
• Quad tailpipe conversion that looks as good as it sounds

Professional fitting available

We highly recommend professional installation. MJ Modifications in Warwickshire can supply and fit this system. Request a fitting quote: info@mjmodifications.co.uk.

Part number: 084019 1500+0446 70SG

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