Dinan Free Flow 304 Stainless Performance Exhaust w/ Helmholtz, Twin 89mm Black Tips BMW 335i F30 2012-2015, 435i F32/F33 2014-2015 (xDrive Compatible)

Cat-Back Sports Exhaust with Resonance Control for BMW F30 335i and F32/F33 435i

Transform the soundtrack and response of your N55-powered 3 Series and 4 Series with this free‑flowing 304-grade stainless cat‑back system. Tuned with a Helmholtz chamber to curb low‑rpm boom and cut drone, it delivers a deep, refined note on the motorway that opens up to a crisp, aggressive tone under throttle. It looks the part too, with dual 89 mm ceramic black tailpipes for a stealth OEM+ finish.

Precision built from 16‑gauge 304 stainless steel and designed to bolt up to the factory mounting points, this rear section improves gas velocity and reduces back pressure without compromising drivability. If you want a premium sound upgrade and a proper fit on your F3x, this is the proven choice.

• Cat‑back sports system for BMW F30 335i and F32/F33 435i, including all wheel drive variants
• Resonance control via Helmholtz technology for reduced cabin drone
• 16‑gauge 304 stainless construction for durability and corrosion resistance
• Dual 89 mm matte black ceramic tailpipes for a subtle performance look
• Straight‑through, free‑flow design to enhance exhaust scavenging
• Bolt‑on installation using factory hanger locations for an OE‑style fit
• Balanced acoustics: civilised when cruising, assertive when you push on

Why enthusiasts choose this system

We have installed this setup for multiple customers at MJ Modifications and the feedback is consistently positive on tone, build quality and fitment. It is an ideal upgrade for anyone searching for a BMW 335i cat back, BMW 435i sports exhaust, F30/F32/F33 N55 exhaust system, stainless catback with black tips, or a drone‑reduced performance rear section that works for daily driving and spirited weekend runs.

Fitment

• BMW 3 Series 335i Saloon F30 2012–2015, rear‑wheel drive and xDrive
• BMW 4 Series 435i Coupe F32 2014–2015, rear‑wheel drive and xDrive
• BMW 4 Series 435i Convertible F33 2014–2015, rear‑wheel drive and xDrive

Installation and support

Professional fitting available at MJ Modifications, Warwickshire. For a quote or to book, email info@mjmodifications.co.uk.

Search phrases our customers use

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