Milltek Sport Axle-Back Exhaust Rear Silencer/Muffler Delete (Backbox/Rear Box Delete), Non-Valved Straight Pipe, Twin 90mm Black Ceramic Tips, Fits BMW 1 Series 125i F20/F21 B48 3 & 5 Door Hatchback 2016+ LCI, M135i Style Diffuser/Valance Compatible

BMW 125i F20 F21 Muffler Delete Rear Section with 90 mm Black Ceramic Tailpipes, suits M135i style diffuser, 2016 onwards

Unlock a richer, more assertive soundtrack from your BMW 125i with this Milltek Sport rear section. This fixed valve-less rear assembly replaces the back box for a straight-through exit, delivering a deeper, louder tone and sharper throttle response. Finished with twin 90 mm ceramic-coated black tailpipes for a stealthy OEM plus look that complements an M135i style rear diffuser on both three door and five door F20 and F21 models running the B48 engine from 2016 onwards.

What you will love

• Muffler delete rear piece for a raw, motorsport-inspired note and enhanced presence
• Consistent sound level at all times thanks to a simple, valve-free layout
• Subtle twin 90 mm satin black ceramic tailpipe finishers that resist heat and corrosion
• Designed to pair with the M135i style lower diffuser for a clean, factory style install
• Crafted in the UK from high-grade stainless steel with precision, constant-diameter bends
• Engineered for improved gas flow to support performance tuning on the 2.0 turbo B48

Built to last

Milltek Sport manufacture in Britain using premium stainless steel for long-term durability. The carefully developed straight-through rear layout and smooth-radius bends help maintain flow and deliver a crisp, sporty soundtrack without the rasp you get from lesser systems.

Compatibility

• Model: BMW 125i hatchback
• Chassis: F20 and F21, three door and five door
• Engine: B48 2.0 turbo petrol
• Years: 2016 on
• Layout: rear box removal, fixed tone, twin outlet
• Tailpipes: twin 90 mm black ceramic coated
• Rear trim note: requires M135i style rear diffuser/valance

Tried by us, loved by customers

We have fitted this rear section to multiple BMW 125i F20 and F21 cars and feedback has been consistently positive. Owners praise the quality, the perfect fit, the classy black tips and the addictive cold start and on-throttle sound. It is a simple way to add character without a full system.

Professional fitting available

Want it supplied and fitted by specialists? Book installation at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote, availability and advice on diffuser options for your 125i.

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