Dinan Cross-Over Mid Section for BMW F8x M3 and M4

Give your S55-powered M car the sound and flow it deserves with the Dinan cross-over mid section for the F80 M3 saloon and F82 M4 coupé. This premium centre pipework replaces the post-cat centre silencer with a true X cross-over for faster scavenging, a sharper throttle feel and a rich, motorsport-inspired soundtrack that turns every drive into an occasion.

Engineered for the F8x chassis

• Direct fit for BMW F80 M3 and F82 M4 model years 2015, 2016, 2017 with the S55 twin-turbo straight-six
• 304-grade stainless construction with straight-through, mandrel-formed 70 mm tubing for durability and smooth flow
• Deletes the large centre silencer for a deeper tone with crisp top-end character
• Supplied with quality clamps and flanges for a clean, bolt-on installation
• Interfaces with the factory rear silencers or the Dinan rear section without cutting

What you will notice

Expect a fuller, more pronounced note with an exotic X-pipe edge, enhanced overrun character and improved response as the revs rise. It keeps things civil on part throttle yet delivers the angry, hard-edged sound enthusiasts chase when you open it up. Pairing with a Dinan rear section amplifies the effect even further.

Sound note: This centre section removes the OE resonator. Cabin volume can increase. Check sound clips if you are sensitive to interior noise.

Why enthusiasts choose this mid section

• Proven Dinan quality and fitment for the F8x platform
• True X cross-over for balanced pulses and cleaner tone vs. simple straight pipes
• Robust 304 stainless steel resists corrosion for long-term reliability
• Designed to work with stock downpipes and catalytic converters
• Compatible with OE back box and Dinan axle-back assemblies

Our experience

We have installed and run this centre section on customer cars and our own demonstrators. Feedback has been consistently excellent on sound quality, finish and the noticeable improvement in character without drone when cruising.

Fitment

• BMW M3 F80 saloon 2015 to 2017
• BMW M4 F82 coupé 2015 to 2017

Compatibility note: Designed to mate to the OE rear mufflers and Dinan rear section. Fitment with other rear silencers may vary.

Installation

Supplied as a bolt-on centre section with clamps and hardware. Professional fitting recommended for best alignment and sealing. For installation at our Warwickshire workshop, contact MJ Modifications for a quote: info@mjmodifications.co.uk.

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Buy with confidence from BMW tuning specialists. This Dinan centre section is a standout upgrade for anyone seeking a higher-quality soundtrack, premium materials and a precise fit on the F8x platform.