Supersprint BMW M135i M140i M235i M240i Resonated Centre Pipe / Midpipe (F20 F21 F22 F23) N55 B58 Exhaust - Part 988603

Supersprint Part 988603 Resonated Centre Section for BMW F-Series Six-Cylinder

Give your turbocharged straight six the rich tone it deserves with the Supersprint resonated centre section, part number 988603. This middle section is the sweet spot for owners who want mature sound, improved flow characteristics and factory-style refinement on their BMW 1 Series and 2 Series performance models.

We run Supersprint systems on customer builds and the feedback has been consistently brilliant. Expect a deeper, cleaner note, less cabin boom at cruising speeds and a polished soundtrack under load. It integrates perfectly into a cat-back setup and works beautifully with both OE back boxes and Supersprint rear sections.

Why enthusiasts choose this centre section

• Beautifully balanced tone with the resonator smoothing harsh frequencies for daily driving.
• Flow-optimised design that complements software and hardware upgrades on BMW N55 and B58 engines.
• Direct-fit geometry for F20 and F21 hot hatch models plus F22 and F23 coupe and convertible variants.
• Seamless pairing with Supersprint rear silencers or adaptable to the original back box when specified.
• Engineered by Supersprint for long-term durability, precise fit and consistent acoustic quality.

Perfect for

• Owners chasing a refined exhaust note without intrusive drone.
• Drivers wanting an OEM-plus driving experience with a stronger straight-six character.
• Builds aiming for a premium cat-back sound upgrade on F-series 1 Series and 2 Series platforms.

Fitment and models

• BMW 1 Series F20 F21: M135i, M140i with N55 and B58 engines
• BMW 2 Series F22 F23: M235i, M240i with N55 and B58 engines

Installation notes

• When connecting to the original rear silencer, an adaptor or sleeve may be required due to diameter differences. Ask at the time of ordering and we will advise on the correct joiner and pricing.
• To be installed as a kit with 524212 and 988624 or 988626 where applicable.

What customers say

Owners love the richer tone and the way this resonated mid section calms unwanted boom while letting the straight six sing. It is a proven upgrade that elevates the soundtrack without sacrificing comfort.

Fitting and support

Want it installed properly the first time We can fit this at MJ Modifications, Warwickshire. Request a fitting quote via info@mjmodifications.co.uk.

Warranty

Supersprint 3 year warranty.

Search-friendly terms

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Part number

988603

Buy with confidence

If you are after a premium-sounding, daily-friendly centre section for your F-series straight six, this Supersprint resonated mid section delivers the sound quality and fitment enthusiasts trust. Order part 988603 today.