BMW 1 Series M140i F20 F21 B58 Performance Exhaust Upgrade - Non-Resonated Cat-Back/Catback, Valved, 80mm (3.15") Stainless - 90mm Carbon Fibre Ascari Tips - UK Made Sports System by Scorpion - M Performance Exhaust Alternative

Upgrade the soundtrack and flow on your BMW M140i F20 F21 with a premium UK-built performance system featuring carbon-finish Ascari tips

If you want a louder, crisper, more motorsport-inspired tone from your B58-powered hatch without compromising quality, this UK hand built performance system is the go-to choice. It runs an unsilenced mid section for a more aggressive note and improved gas flow from the catalyst rearwards, finished with stunning 90 mm carbon fibre Ascari tailpipes that transform the rear end look.

Crafted in England and trusted by tuners and trackday drivers, this setup delivers a sharper, richer soundtrack and a noticeable weight saving compared to the factory rear section. We run this system on our own cars and our customers consistently praise the fit, finish and the addictive tone at higher revs.

Key features

• Designed for BMW M140i F20 F21
• Straight-through non-silenced centre for a more aggressive sound and improved flow
• Carbon fibre Ascari tailpipes - 90 mm twin exit for a purposeful OEM-plus look
• Large bore tubing - 80 mm diameter pipework for reduced restriction
• Valve control retained using the original electronic motors
• Hand built in the UK with premium stainless construction and quality welds
• Weight saving vs OE: 19.6 kg original vs 16.53 kg aftermarket - around 3.07 kg lighter
• Precise fitment engineered to integrate with factory mounting points

Tech specs

• Pipe diameter: 80 mm / 3.15 inch
• Tailpipe style: Ascari carbon fibre 90 mm
• Notes: valves require OE motors
• OE weight: 19.6 kg
• System weight: 16.53 kg

Why enthusiasts choose this setup

• Sharper, deeper tone from the B58 without the factory muffling
• Enhanced presence under load with a refined idle and cruise
• Quality UK craftsmanship and a proper performance look with carbon tips
• Popular upgrade for owners seeking an alternative to the OEM M Performance exhaust

Looking to unlock more character from your M140i, improve exhaust flow and add a premium carbon tailpipe finish that turns heads in the paddock and on the street? This is the upgrade.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. Request a fitting quote: info@mjmodifications.co.uk.

Search-friendly fitment and common queries

Compatible with BMW M140i F20 F21 B58. Often searched as M140i exhaust upgrade, F20 M140i sports system, F21 M140i performance rear section, M140i valved exhaust, M140i carbon tailpipes, 3.15 inch large bore, 90 mm tips, aftermarket M140i system. Retains factory valve control using original actuators.