BMW 435d Diesel 4 Series (F32/F33/F36) Quad Exit M4 Look Exhaust Conversion – Cobra Sport T304 Stainless Rear Section, Dual Twin 76mm Polished Slash-Cut Tips, Back Box/Center-Back Replacement, M Sport Bumper Fit – Coupe/Convertible/Gran Coupe

Give your BMW 4 Series 435d a true M4-look rear end with a premium quad tailpipe upgrade that looks factory fresh, sounds subtly sportier and is built to last.

This Cobra Sport rear section transforms the appearance of your diesel 4 Series with dual twin 76.2 mm polished tips and precision TIG-welded T304 stainless steel construction. It replaces the standard back box and pipework from the centre section backwards, delivering that desirable quad outlet aesthetic with a refined tone that stays close to stock for daily comfort.

Key highlights

• M4-style quad outlet appearance with dual twin 3 inch slash cut tips
• High grade T304 stainless steel, TIG-welded for strength and durability
• Centre-back replacement section with all required fittings and gaskets included
• Subtle sound enhancement, engineered to remain very close to original volume
• Designed for an OEM-plus finish that suits the rear bumper perfectly

Vehicle compatibility

• BMW 435d 4 Series F32 Coupe, F33 Convertible, F36 Gran Coupe
• For M Sport rear bumper cars only
• Requires quad exit lower rear panel to suit the additional outlets
• Not compatible with AdBlue models

Rear diffuser panel and saving

Add the matching rear valance to complete the conversion and save 30 percent when purchased together. Part code: RP03. Retail customers only.

Why enthusiasts choose this upgrade

• Transforms the rear profile with a genuine performance look
• Quality materials resist corrosion for long term use
• Clean fitment that integrates with the M Sport bumper and quad panel
• We run this setup on customer builds and feedback has been fantastic for fit, finish and everyday usability

Fitting information

• The original exhaust requires a cut to install this section
• Supplied with all associated hardware for installation
• Professional fitting recommended

Need installation Our in-house team at MJ Modifications in Warwickshire can fit this conversion and the matching diffuser panel. Request a quote at info@mjmodifications.co.uk.

Search-friendly terms

BMW 4 Series 435d quad tailpipe conversion, F32 F33 F36 quad outlet rear section, M Sport rear valance upgrade, M4 look diffuser RP03, stainless steel rear silencer section, dual twin tip exhaust, polished tips, cosmetic exhaust upgrade for diesel 435d, rear bumper insert for quad tips, performance back box replacement for BMW 435d.