Valved Exhaust System for Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G (2016-2021)
Configuration
Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G Valved Exhaust System (2016-2021)
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 manifolds + 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 Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G exhaust in detail.
The MX-5 ND follows Jinba Ittai, the unity of horse and rider: lightness, balance, total connection. In this philosophy, sound is part of the experience, especially with the roof down, and it is in fact the first thing the MX-5 community improves. From the factory, the little four-cylinder sings in a muted voice.
The naturally aspirated 2.0-litre Skyactiv-G produces 160 or 184 hp and 200 to 205 Nm depending on the model year, between 2016 and 2021. The page is for this 2.0; the 1.5 is not concerned, and your VIN is checked before manufacturing. With the valves open, the Rog valved cat-back gives the roadster a lively, mechanical tone, an expressive climb and light crackles on the overrun; with the valves closed, the neighbours have nothing to complain about.
Under this small roadster, fitting takes only about two hours, with clamps and gaskets, no welding; the factory valve control is retained if there is one, and otherwise the Rog remote, whose box slips into the boot, takes over.
On this naturally aspirated engine, the “Manifold” option sells the manifolds, with the original catalytic converter integrated, whose geometry matters for cylinder filling: with an ECU remap, the gain is real but modest, in the order of 3 to 8%, and without one it is the voice that changes. For a roadster driven all year round, the 200-cell version keeps emissions control, the 100-cell version will be accepted or not depending on the car and the rules in your country, and the decat version is reserved for track use, for MX-5s entered in track days. To keep the lightweight spirit, titanium removes around 40% of the weight for the same design and comes in brushed, gold or purple; 304 stainless steel remains the robust choice.
Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles and chassis code | Mazda MX-5, ND generation, 2.0 engine, roadster and RF |
| Engine | Skyactiv-G, 2.0-litre naturally aspirated four-cylinder, 160 to 184 hp and 200 to 205 Nm depending on the model year |
| Years | 2016-2021 |
| 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) | Manifolds with 200-cell or 100-cell catalytic converters, 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 Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G exhaust.
As the owner of an MX-5 ND 1.5, can I fit this system designed for the 2.0?
No, this page targets the 2016 to 2021 MX-5 ND 2.0, and the 1.5 is not covered. If you are unsure about your roadster, the VIN, requested when you order, lets us check before manufacturing.
Does a custom map make sense on the MX-5 ND 2.0?
With the cat-back alone, nothing requires touching the ECU. With the manifolds, a new map turns the better cylinder filling into a few per cent, around 3 to 8%: on this roadster, what you are really after is the voice and the driving pleasure.
For the vehicle inspection, does a modified MX-5 ND 2.0 need to go back to standard?
Not necessarily: with the valves closed and factory or 200-cell manifolds, the roadster regains a well-behaved voice and keeps its catalytic converters active. The 100-cell will be judged according to your country and the car; in decat form, the MX-5 stays on the track.
Roof open, does the MX-5 ND with a Rog system become tiring on the motorway?
No, with the valves closed: the system stays composed at a steady speed. You open up on the back roads, where Jinba Ittai comes into its own, via the factory control or the Rog remote.
Does the MX-5 RF 2.0 take the same system as the roadster?
Yes. The roadster and the RF take the same Rog system: same chassis, same 2.0 Skyactiv-G, same clamp-and-gasket fitting. Your VIN is only used to confirm the version and model year before manufacturing.
Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G: Does a valved exhaust system drone?
No. With the valves closed, the gases flow through the whole rear silencer 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 motorway.
Mazda MX-5 / MX-5 RF ND 2.0 Skyactiv-G: 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
Mazda MX-5 / MX-5 RF ND: the soundtrack of Jinba Ittai, the complete guide
The MX-5 ND is a return to the roots: under a tonne, with the original purity rediscovered. The best-selling roadster in history in its finest form, with just one wish: to be heard a little more. Here, point by point,...
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
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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.
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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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