Milltek Sport Cat-Back Exhaust System for BMW G20 M340i xDrive (B58, 2019+) with OPF/GPF Bypass – Quad Polished or Ceramic Black Tips
Milltek Sport Cat-Back Exhaust System for BMW G20 M340i xDrive (B58, 2019+) with OPF/GPF Bypass – Quad Polished or Ceramic Black Tips
Milltek Sport Cat-Back Exhaust System for BMW G20 M340i xDrive (B58, 2019+) with OPF/GPF Bypass – Quad Polished or Ceramic Black Tips
Milltek Sport Cat-Back Exhaust System for BMW G20 M340i xDrive (B58, 2019+) with OPF/GPF Bypass – Quad Polished or Ceramic Black Tips
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Milltek Sport Cat-Back Exhaust System for BMW G20 M340i xDrive (B58, 2019+) with OPF/GPF Bypass – Quad Polished or Ceramic Black Tips

£1,730.90
£1,730.90
£1,923.22
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Milltek BMW G20 M340i xDrive Cat-Back Exhaust System with OPF Bypass

Transform the sound and response of your BMW M340i with the Milltek Sport cat-back exhaust system for the G20 M340i xDrive B58. This OPF/GPF bypass cat-back exhaust is the go-to upgrade for drivers who want more volume, more character and more flow from their BMW M340i exhaust. Made in the UK by Milltek, it delivers a deeper, more aggressive note while reducing back pressure for improved gas flow and performance potential.

Why choose this BMW M340i exhaust upgrade

  • OPF/GPF bypass for maximum sound and flow on OPF-equipped BMW G20 M340i models
  • Choose your look: keep OE trim finishers or upgrade to Milltek Sport quad outlets
  • Tailpipe options: quad polished tips or quad ceramic black tips
  • Engineered for the B58-powered BMW M340i xDrive Saloon (G20)
  • Designed, developed and manufactured in the UK by Milltek Sport
  • Direct-fit cat-back exhaust upgrade for a sharper, sportier BMW M340i exhaust note

We’ve installed this system for customers and feedback has been consistently positive: tighter fitment, premium finish and a seriously addictive exhaust tone that brings the BMW B58 to life. If you want the best-sounding BMW M340i exhaust with OPF bypass, this Milltek cat-back is a proven choice.

Part numbers and tailpipe options

  • SSXBM1160 — Cat-Back System with OPF Bypass, retains OE trim finishers
  • SSXBM1163 — Cat-Back System with OPF Bypass, Milltek Sport quad ceramic black trims
  • SSXBM1162 — Cat-Back System with OPF Bypass, Milltek Sport quad polished trims

Compatibility

BMW 3 Series G20 M340i xDrive Saloon, B58 (2019–present), OPF/GPF equipped.

Optional performance add-ons

Pair your cat-back with Milltek’s cast downpipes for further gains in gas flow and heat management. The HJS High-Flow Sports Catalyst is a premium 200-cell unit, reducing density versus typical OEM 500–600 cell catalysts to improve flow while maintaining everyday emissions compliance where applicable.

Manufactured by

Milltek Sport

Warranty

Milltek 2 year warranty on catalytic components and lifetime warranty on the downpipe (manufacturer terms apply).

Professional fitting

Want this BMW M340i exhaust fitted by specialists? Nforcd offers professional installation in Warwickshire. Request a fitting quote: Sales@nforcd.com.

Keywords for search

BMW M340i exhaust, BMW G20 M340i cat-back, B58 exhaust, Milltek M340i OPF delete, OPF bypass exhaust, GPF delete exhaust, BMW M340i xDrive exhaust upgrade, Milltek Sport quad exhaust, M340i rear silencer, performance exhaust UK.

Note: OPF/GPF bypass systems are intended for off-road or track use where applicable. Check local regulations before installation.