Why do some motorcycles have 2 exhausts?

The reason: it looks like a professional race bike, that’s it;-) To expand upon Jack’s answer, some (especially performance) motorcycles split the exhaust into 2 to maintain high performance while still meeting EPA noise regulations.

What is the function of a motorcycle exhaust?

The exhaust system plays a critical role in how your motorcycle functions. It helps to route combustion gases away from the rider and the passenger, muffles up the noise, and enhances engine performance.

What does straight piping a motorcycle do?

What’s a Straight Pipe On a Motorcycle? Straight piping a motorcycle means removing the muffler and catalytic converter from the exhaust of your motorcycle. This means your exhaust will be extremely short – consisting only of the exhaust header.

How much horsepower does an exhaust add to a motorcycle?

Full Exhaust System Pros: With a full system, expect to gain about 7-10 horsepower depending on your engine. A full system will yield much more horsepower than just a slip-on.

Are motorcycle exhausts universal?

Every motorcycle has a slightly different exhaust system. Even the most universal kit can only be used with a select range of bikes. Find out whether you already have a slip-on exhaust or a full exhaust system. Slip-on exhausts are common with sport bikes and off-roaders.

How long do motorcycle exhausts last?

As a rough rule of thumb, however, a typical life expectancy of a premium aftermarket exhaust system should be in the neighborhood of two to three years depending on driving habits and the previously mentioned factors.

Why straight piping is bad?

A straight pipe, for example, can cause exhaust gas velocity to increase. This will likely reduce engine performance below 2,000 or 2,500 RPM, making your vehicle a little slower to launch from a stoplight.

Does straight piping increase horsepower?

You will see an enhancement in your horsepower. The primary advantage of equipping a straight pipe exhaust to a performance engine is that you’ll see a definite boost in your horsepower. That means you’ll get a higher HP and your fuel economy will improve slightly at the same time.

What is a dual exhaust on a motorcycle?

True Dual Exhaust Where 2 into 1 pipes are more common on smaller, more sporty bikes, true duals are more common on baggers and touring bikes. They give your bike a more balanced look thanks to their two separate mufflers, each emitting exhaust from one of the cylinders.

What is a 2 into 1 exhaust system?

2 Into 1 Exhaust With 2 into 1 exhaust systems, the two exhaust pipes combine to emit fumes through one muffler. Sound will obviously vary depending on the pipes and muffler, but these systems are generally characterized as being higher pitched compared to true duals.

What kind of exhaust do I need for a Harley V-twin?

For the V-twin in your Harley, you have two options and one choice before you can go any further. That would be the choice between 2 into 1 exhaust and true dual. With 2 into 1 exhaust systems, the two exhaust pipes combine to emit fumes through one muffler.

What determines the number of cylinders on a motorcycle exhaust?

The number of cylinders determines how may exhaust HEADERS the bike has.These are the pipes attached directly to the engine. However, many sport, touring, and standard design bikes will combine those into a single or sometimes a pair of pipes (a 4 into 1 or 4 into 2 arrangement).