Valved Exhaust System for BMW 428i N20 F32 / F33 / F36 2.0T (2013-2016)
Configuration
BMW 428i N20 F32 / F33 / F36 Valved Exhaust System (2013-2016)
Valves
Operated by remote control, factory-paired.
Estimated at 0.50 m from the outlet, 45°, 2,000 rpm with a warm engine. Allow ± 2 dB depending on the engine and measuring point. A 3 dB difference is audible in a direct comparison; 10 dB sounds roughly twice as loud.
Configuration guide
Sound intensity with the valves open, on a scale of 0 to 10.
| Configuration | Intensity |
|---|---|
| Decat downpipe + Rog cat-back | 10/10 |
| 100-cell sports catalytic converter + Rog cat-back | 9/10 |
| 200-cell sports catalytic converter + Rog cat-back | 8/10 |
| Rog cat-back only, factory catalytic converter retained | 7/10 |
| Factory exhaust, for comparison | 3/10 |
The BMW 428i N20 F32 / F33 / F36 exhaust in detail.
The 4 Series won people over with its design: long hood, low roofline, planted stance. As a 428i, built from 2013 to 2016, it receives the N20, a 2.0-litre four-cylinder with direct injection and a twin-scroll turbo, for 245 hp and 350 Nm. More compact than a six-cylinder, it lightens the front end and helps agility through sequences of corners. The B48,430i and the 435i have their own pages.
The N20 has a deeper voice than you might imagine, with a slightly hoarse grain under acceleration. The 428i’s factory exhaust turns it into neutral background noise that says nothing of the engine’s effort, an awkward mismatch on a car with such an assertive silhouette. With the valves open, our cat-back gives it back that grain: a more present start-up, a firm note when you get back on the throttle; with the valves closed, the 4 Series resumes its role as an elegant, quiet car.
No cutting spoils the 4 Series rear valance: the system, bent to your VIN, connects with clamps and gaskets in about two hours, and the 428i keeps its factory valve control if it has one, or receives the Rog remote.
Under the “Manifold” option, the page sells the N20’s catalyzed downpipe; fitted on its own, it adds a little sound and removes a few kilos, and it is with an ECU remap that it releases power. On a coupé driven every day, the 200-cell variant keeps the 428i’s emissions control, the 100-cell one is accepted or not depending on the car and the rules in your country, and the decat version is reserved for track use. On the cat-back side, 304 stainless steel pairs with understated bodywork, titanium, around 40% lighter, with a more showy tip colour.
BMW 428i N20 F32 / F33 / F36 2.0T exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles and chassis codes | BMW 428i N20, F32 coupé, F33 convertible and F36 Gran Coupé |
| Engine | N20, 2.0-litre turbocharged four-cylinder, 245 hp and 350 Nm |
| Years | 2013-2016 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control if the car has it, otherwise the Rog remote |
| Front section (option) | Downpipe with 200-cell or 100-cell catalytic converter, or decat |
| Fitting | Clamps and gaskets, no welding, about 2 hours |
| Manufacturing and delivery | Made to order, 20 working days, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the BMW 428i N20 F32 / F33 / F36 2.0T exhaust.
Coupé, convertible or Gran Coupé: which 428i takes this system?
All three. The F32 coupé, the F33 convertible and the F36 Gran Coupé take the same Rog system, as on our 435i and 440i pages, with the same clamp-and-gasket fitting. Your VIN is only used to confirm the model year before manufacturing.
What is the potential of a 428i’s N20 once remapped?
The Stage 2 figures published on the page are 295 hp and 420 Nm, achieved with a downpipe and a map from an approved tuner; the cat-back alone works with the stock engine management.
BMW 428i N20 2.0T with a Rog exhaust: what should you know about vehicle inspection?
With the cat-back only or the 200-cell sports catalytic converter, emissions control is retained: present the car with the valves closed. The 100-cell brings more sound and flow, and whether it is accepted at the emissions test depends on the car and local rules; the decat version is intended for track use.
Does a four-cylinder suit such an elegant 4 Series?
Yes, provided you let it be heard: the N20 has a deep, gruff grain that our system brings out with the valves open, finally matching the 428i’s sound to its silhouette.
Will my 428i drone at a steady cruising speed?
Not with the valves closed: the gases pass through the cruising muffler and the 4 Series stays hushed on the highway, with the valves only opening when you ask.
BMW 428i N20 F32 / F33 / F36 2.0T: Does a valved exhaust system drone?
No. With the valves closed, the gases flow through the whole rear muffler and the cabin stays calm at a steady speed. Our Rog exhausts are designed to avoid drone. Learn more: Why our systems stay calm on the highway.
BMW 428i N20 F32 / F33 / F36 2.0T: straight pipe or resonator?
On this model, two characters at the same price: the straight pipe for the raw sound of your engine, unfiltered, or the resonator for a rounder and slightly softer voice. Either way, the exhaust stays fully sporty. Learn more: Exhaust resonator: what does it do? Straight pipe or resonator, which sound to choose.
Rog expert guide
BMW 428i N20 F32 / F33 / F36: the sound the 4 Series deserves, the exhaust system guide
The 4 Series won people over with its design: long hood, low roofline, planted stance. As the 428i, built from 2013 to 2016, it gets the N20, a 2.0-litre turbocharged four-cylinder that delivers 245 hp and 350 Nm. Solid performance,...
In detail
Rog Advisor
A question about this exhaust?
Fitment, sound, catalyst, valves, delivery: the answer comes straight away, with your configuration in context.
The Rog Advisor is an automated assistant trained on our product pages and answers. For an important decision, write to us: we confirm by e-mail.
Unsure about your configuration? Talk to us before you order. We know your car. Write to us at contact@rogmotorsport.com: we reply in writing, in English, within 24 hours. Email us
Your country
Rog in Canada.
Inspections in Canada
A Rog cat-back leaves your factory catalytic converter, oxygen sensors and OBD untouched, and valves closed, your car sounds very close to stock at a safety inspection. Sport cats follow your province's rules, the catless version is for the track only, and your province decides.
On the road
Valves closed around town, your car sounds very close to stock, and you open them whenever you like.
Your documents
Each system is built from the VIN on your vehicle registration, and we send its technical documentation free on request, for an inspection or for your insurer.
Your insurance
Tell your insurer before installation: our free technical documentation makes it easy.
Reviews imported from our previous system and translated from French; verified purchases carry the badge.
Rog presentation film: choosing your vehicle, Standard or Equal Length design, stainless steel or titanium, Z-Pipe, controlled valves, titanium and tip finishes, and support from choosing your configuration through to shipping.
THE Rog CRAFT
Our process.
From the first bend to the last check. The same care at every step.
-
Design
Designed for your vehicle.
Geometry matched to your model, carefully studied bends and precise mounting points. Everything starts with accurate design.
-
Manufacture
Crafted with precision.
Tube bending, part fitting and TIG welding: every joint receives the same care.
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Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
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Assembly
Every part in its place.
Components are assembled and adjusted. On valved systems, the mechanism is fitted, set up and tested.
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Inspection
Check. Then approve.
Geometry, welds, connections and gas flow: the key points are inspected before shipping.
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Shipping
Ready to join you.
Reinforced packaging protects your exhaust in transit. The final step before giving your vehicle a new voice.
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