WHICH EXHAUST TO CHOOSE?

The different elements of the exhaust

The exhaust system is made up of several essential components, each playing a specific role in the operation of the engine and the performance of your two-wheeler.

It includes in particular the manifold, which recovers the burnt gases at the engine outlet, then the cartouche or silencer body, responsible for reducing noise and regulating back pressure. Some models also have a quibble removable to adjust the sound level, or a relaxation pot on 2-stroke engines to improve acceleration and performance. It all ends withar a exhaust outlet, sometimes decorated with an aesthetic or technical end piece. Depending on the model (scooter, 50cc gearbox motorcycle, moped, etc.), the shape, size, and design of each part can vary. Understanding the structure of an exhaust pipe will help you better choose an exhaust that will suit your riding style and your machine.

How does an exhaust pipe work?

Le exhaust has the main role of channel and evacuate burnt gases from the engine's combustion. When the air/fuel mixture is burned in the cylinder, it produces hot, high-pressure gases. These gases must be expelled quickly to allow a new combustion cycle, but without excessive noise or loss of performance.

The exhaust will therefore:

1. Reduce noise : thanks to the silencer or cartouche, which attenuates sound waves and prevents your two-wheeler from making too much noise.

2. Improve performances : on 2-stroke engines, the expansion chamber creates a "counter-pressure" effect which optimizes cylinder filling, and therefore power.

3. Filter emissions (on some models): some exhausts are equipped with catalysts to reduce exhaust gas pollution.

In short, the exhaust pipe is not just an aesthetic or sound accessory: it is a key element of the engine, which directly affects the performance, consumption, and compliance of your machine.

What materials for an exhaust pipe?

Exhaust pipes can be made from different materials, each having its advantages in terms of weight, resistance, performance and of course… looks. The most common remains stainless steel, strong, affordable and easy to repair, but it can rust if not treated. There are also pots made of stainless, corrosion resistant and a highly regarded glossy finish. For performance enthusiasts, the Titane is a high-end choice: ultra-light and heat-resistant, but more expensive. Finally, some models incorporate parts made of carbone or aluminum, especially on cartridges, to combine lightness et sporty designThe choice of material will influence the pot weight, its lifespan, its maintenance…and of course, his style.

How to check the compatibility of an exhaust?

Before ordering an exhaust, it is essential to check its compatibility with your vehicle. Each pot is designed for one or more specific models of motorcycles, scooters or mopeds, according to the engine type, with a safe environment, and fastening system. To be sure you make the right choice, start byar collect the key information about your machine: brand, exact model, année, displacement (50cc, 125cc, etc.) and engine type (2 stroke or 4 stroke).

Public chat 50Factory.com, each product sheet specifies the compatible models, and a search filter allows you to directly select your vehicle. If you have any doubts, do not hesitate to compare with the original exhaust, or to contact our team. Changing the exhaust by choosing an unsuitable exhaust can lead to problems with assembly, performance, and even safety.

The legal framework for exhaust pipes

Not all exhaust pipes are legal for use on public roads. To comply with the regulations, it is essential to use a EC approved exhaust, recognized as compliant with European standards in terms of noise andpolluting emissions. These models usually come with a quibble and one approval certificate. Conversely, the unapproved pots – often used for competition, circuit or mechanical preparations – are strictly prohibited on open roads. Riding with an unsuitable exhaust can result in fine, or immobilization of the vehicle, even a cancellation of your insurance in the event of an accident. Even if some pots racing are very efficient, their use should remain limited to private or sporting use. Before making any changes, always check the applicable legislation.

What are the risks with an exhaust pipe that is not approved for road use?
Riding with an unapproved exhaust can result in fine of up to €135,immobilization of the vehicle and one withdrawal of the registration certificate. In the event of an accident, your insurance may refuse to cover you if the equipment is deemed non-compliant.

How do I know if a pot is approved?
An approved pot is generally delivered with a quibble, or plate or engraving "E" followed by a number (eg: E9, E11…) and a approval certificateThese details must appear directly on the pot or in its documentation.

Can I use a non-approved pot for recreational or racing use?
Yes, but only on closed circuit, in competition, or on private land. These pots should not be used on open roads under any circumstances.

Can I pass the motorcycle technical inspection with a modified exhaust?
With the gradual arrival of the technical inspection for two-wheelers, it is strongly recommended to install a pot conforming to the original approvalAn unapproved pot will result in a refusal during inspection.

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