7 Best Exhaust for Yz450f in 2023

It’s no surprise that the Yamaha YZ450F is so popular. It has a whopping 450cc engine. This bike is designed for high-performance off-road racing and features a 4-stroke single-cylinder design with plenty of torque to get you through any terrain.

It also comes standard with an electric starter, which makes starting up this beast a breeze. The Yamaha YZ450F is not your typical dirt bike, though, because it can be ridden on the pavement as well.

Best Exhaust for Yz450f

It shows its versatility by adjusting the suspension on different surfaces: smooth tarmac or rough rocky trails. You’ll never have to worry about getting stuck in the mud, thanks to its long-travel suspension and long wheelbase, making climbing hills easy too.

The Yamaha YZ450F is a motocross bike that’s built to go fast off-road. To handle the terrain, it features a lightweight frame and suspension system. But what about engine exhaust? We’ve researched for you, so now you don’t have to. Here are our top seven picks of best exhaust for YZ450F.

Top Seven Best Exhaust for YZ450F

Here are the top 7 best yz450f dual exhaust that you must to know.

Yoshimura RS-4 Full System Exhaust

The RS-4 Full System Exhaust is known as a power producer. Its low-end torque is quick and responsive, and the sound performance of these new race mufflers will be nothing short of intoxicating.

With this Yoshimura exhaust system, you’re living on the edge. Race-bred from the outset, Yoshimura R&D teams have been developing championship-winning exhaust systems since 1973. Unrelenting dedication to racing led Yoshimura engineers to create an all-new design for motocross and supercross riders in mind.

The RS-4 muffler design is proudly presented here in a complete system offering. There’s no waiting around when it comes to having the best performance out of your bike with this finely tuned machine.

Made to give you the ultimate sound and performance upgrade, this exhaust system is designed for those who want to put their bike’s power on display. Hear that sweet rumble as your bike roars towards you at night, or see that smug look of triumph from rivals watch in envy as you speed away and leave them far behind.

It features a poly resonant duplex chamber, a two-staged stepped baffle, and an innovative carbon cone end cap. A finely crafted pipe, the Yoshimura RS-4 will make your engine sound like a true metal shredder.

Take control of your vehicle with this addition and start riding with the boys. Massive power can be unleashed from that beast under the hood when you take command of every twist and corner in sight.


  • This exhaust comes with a poly resonant duplex chamber.
  • Keeps the bike in a balanced condition.
  • The power of your bike gets highly increased.
  • There is an innovative carbon cone cap provided with this product.


  • The metal can get rusty sometimes.

FMF Factory 4.1 RCT Slip-On Exhaust

FMF is the leader in exhaust innovation. This new slip-on includes everything you need to be worry-free about your bike, from an ultra-flexible mounting system that quickly puts this new FMF Factory 4.1 RCT Slip-On Exhaust on and takes it off, to a resonant chamber for a deep growling sound, all at a price point made for enthusiasts who want the best without breaking the bank.

It’s time to get lost in some crisp throttle therapy with nothing more than just noise but no regrets. This lightweight slip-on exhaust has a patent-pending shape that increases power output and lowers sound level.

The FMF Factory 4.1 RCT Slip-On Exhaust is made of fully TIG welded stainless steel materials, so you can feel confident it will never fail on the track. Fit to perfect any ABC performance dirt bike race series or Honda CRF150RB engine, this exhaust won’t disappoint racers looking for advantages with improved performance or those who want lower decibels.

The FMF 4.1 RCT Slip-On Exhaust is the sound of big performance with a shorter overall length that’s less susceptible to crash damage and complementary to Factory Forward Engineering – moving the muffler(s) closer to the motor.

This exhaust offers enough power and torque without compromising low-end response with an open-end pipe design, complemented by high-quality construction featuring aircraft-grade T304 stainless steel tubing that can eliminate corrosion.


  • The aircraft-grade steel used in this product hinders rusting.
  • The open-end pipe design increases the power of the bike.
  • The patented design increases the exhaust pressure waves.
  • Redesigned canister increases the internal capacity.


  • Make sure to check the size before buying the product.

GYTR FMF Powercore 4 Muffler

With the Power Core 4, experience a power increase that is noticeable and beneficial no matter your riding style. So get ready to take on any terrain or challenge with this excellent new muffler from GYTR.

This isn’t a turbo or nitrous system that will throw your engine out of balance. Instead, this is an exhaust pipe upgrade designed for riders who want to advance their riding skills without sacrificing any power to do so.

Take on trails that are much tougher than what you’re used to conquering without backing down–this will bring confidence with outstanding performance at a fantastic price.

The new generation of mufflers has been designed to provide optimal performance and durability. Built with a space-age packing system that maintains optimum sound echo and longevity, the FMF Powercore 4 is perfect for today’s motocross rider.

The GYTR FMF Powercore 4 Muffler is the ultimate muffler technology. The internal core shape uses high-flow technology to provide higher flow and increased power, while enhanced sonic evacuation helps riders get an even deeper sound.

Along with a considerable increase in performance, it also features a stylish black design that provides improved protection against corrosion, making your ride last longer than ever before. 


  • This exhaust increases the horsepower and torque.
  • The space-age packing ensures longevity.
  • The module end cap provides high flow.
  • Sonic evacuation system increases the power.


  • The material strength should be increased for added durability.

Pro Circuit 0151545A T-6 Slip-On Exhaust

The Pro Circuit T-6 Slip-On Exhaust is not only back on shelves and at a low price point– with bigger, bolder tires sure to match your adrenaline-filled heart rate, but it also comes in packages of two.

So buy now and get the whole bike treatment with some spare parts while you’re at it. This product is not something you want to be passed up.

Buying this will save you time when changing exhaust systems, plus let everyone know just how intense you are by revving that engine like there’s no tomorrow. Of course, with significant power gains, we recommend upgrading air filter components later on.

Put an end to the bucking bull. Upgrade now and enjoy your YZ450F Rider! Power up with our Pro Circuit 0151545A T-6 Slip-On Exhaust. Simply put, this is one excellent upgrade that we know you’ll appreciate for years down the road.

Your Yamaha will be lighter because it’s missing a large exhaust pipe, so you’ll always have less weight on your hands when you’re trading turns on hill climbs.

You’ll get plenty of horsepowers as well – thanks to its quad welded steel pipes that provide lower background noise levels and increased velocity while remaining light in weight like traditional aluminum pipes.

The brackets are designed specifically for strength and performance; they won’t cause any melting or cracking after extended usage.


  • Enhances the performance of YZ450F.
  • Stainless steel end caps help protect the bike.
  • The aluminum construction increases the durability.
  • The muffler brackets make the bike control easy.


  • The product needs improved longevity.

Pro Circuit T-5 Exhaust System

Give your dirt bike the firepower it needs with a Pro Circuit T-5 exhaust system! The asymmetric muffler design is loud enough to be noticed but not too loud to violate noise ordinances, so you don’t need to worry about any pesky citations from the authorities on race day.

Performs well even in rough terrain and helps produce horsepower that’s necessary when steamrolling over opponents in a heated battle for first place. The Pro Circuit T-5 Exhaust System is for those looking to unleash the true power from their engine.

With an increased packing volume, this exhaust system can be used on various truck models and cars. In addition, the aluminum muffler bracket makes it perfect for adding that extra sparkle to any bike in your garage.

This exhaust has been proven repeatedly to be the loudest exhaust on the market while still producing more power than other systems.

It’s sure to make all your friends jealous with its mysterious black finish. If you need a system with an intimidating sound in front of your opponents, this is it.

This product features a lightweight design inside and out! So don’t be fooled by large, industrial-looking exhausts; this one will give your bike the tone you want without weighing it down. And don’t fret over anything rattling-the durable material will refrain from a single shake.


  • The technology induced in this exhaust meets the maximum sound requirement.
  • The asymmetric design balances the performance of the bike.
  • This product has increased packing volume.
  • Comes with a high-quality resonance pipe.


  • Sometimes the noise can be too much for the neighborhood.

FMF Powercore 4 HEX Slip-On Exhaust

FMF Powercore 4 HEX Slip-On Exhaust is an easy-to-install, full-performance exhaust system. This low-maintenance, six-inch stainless steel and aluminum construction system for your motorcycle delivers increased power and torque through the entire RPM range with efficiency perfectly matched to the power output of your motorcycle.

Best-in-class baffles combine to offer flexible header tuning while avoiding choppy on/off transitions. In addition, a durable gunmetal finish resists scratches and corrosion. High-quality and durable, the FMF Powercore 4 HEX Slip-On Exhaust is perfect for all your off-road adventures.

With its Hi-Flow technology, the internal shape of the core utilized for maximum longevity, and a lifetime warranty against manufacturer defects from the date of purchase, this exhaust is a must-have for true enthusiasts.

This exhaust is a favorite among serious riders. This slip-on exhaust system brightens your bike’s performance and makes a good sound as well.

Plus, it has removable spark arrestors that can be switched on when you’re in an area with strict emissions regulations. Made in the USA, this product will last for years to come.


  • The RPM range of the bike is increased.
  • The construction of the exhaust is highly durable.
  • The pacing materials provide added longevity.
  • Comes with a sonic evacuation system.


  • The price can be a bit high for some riders.

Akrapovic Off Road Slip-On Exhaust

Akrapovic is a leader in world-class exhaust systems. This slip-on exhaust is made of titanium, which means it’s light and easy to weld onto anything that can handle the power of your motorcycle.

Plus, there are no mounting brackets required for installation! This efficient design is approximately 85% lighter than steel alloy construction, providing increased performance throughout the RPM range with its’ 686 length headers and CNC milled baffles.

From cruising speeds to entire throttle shifts up mountain passes or blasting across rocky terrain, Akrapovic has you covered. If you’re ready for the next level of your customizing, add Akrapovic to your kit! We’ve got a wide array of exhaust systems to suit any taste.

For off-road riders who want that “golden chips” look on their dirt bike or ATV, we offer various Slip-Ons that can bolt directly onto the muffler without any shop installation time. They’re perfect for those weekends exploring winding mountain trails or racing at low altitude ovals.

If you ride Dual Sport which requires a range of riding styles and terrain types like pavement roads in suburbs plus gravel forest trails – check out our Off-Road Auxiliary Systems as well! With these complete system-mounted kits, no modifications are necessary because they come with all the latest technologies.

The exhaust features a spark arrestor for those pesky emissions control officers. With an engineered design that still allows the use of your bike’s stock head pipe, this exhaust system is perfect even if you don’t have the time to create your custom exhaust.


  • The titanium construction makes the product durable.
  • Increases the overall performance of the bike.
  • The finish of this product is exacting.
  • The product comes with a spark arrestor


  • The design of the product should be improved.

What Is an Exhaust?

Exhaust systems, also known as mufflers or silencers, are devices that reduce the sound of an engine. They usually have a number of holes in them to allow some gas to flow through, but this means there is still going to be sound produced by the exhaust system.

The goal here is not silence since no matter how good your exhaust system, maybe it will never produce zero noise from the engine, and you’ll always notice when they go off on their own.

How does Motorcycle Exhaust Systems work?

A motorcycle exhaust system works by mixing fuel with air to create an explosion that causes the engine to turn. The sound of this blast is typically muffled inside the exhaust pipe, but a bike’s backfire or popping can still be heard out into open space. In order for the gas-air mixture in a carburetor to combust efficiently, the air must be heated up.

This is done by burning a small amount of gasoline in a chamber ahead of the main cylinder then passing it out through an opening on top to mix with colder outside air.

How to Setup Exhaust for Bike?

The type of exhaust you choose for your bike can significantly impact the performance and sound. The best thing to do is take your motorcycle in for an inspection before making any decisions about what kind of exhaust system you want to install.

How to Setup Exhaust for Bike

If there are no problems with the bike, then it will be easier to find the perfect setup that suits your taste and needs. Finally, if you’re just looking at adding some power so that this motorbike won’t go as fast downhill when going too slow, then changing out the muffler may work better than buying a new one.

Factors to consider when purchasing the Best Exhaust for YZ450F

Ease of Installation

Compared with some other bikes, this motorbike may be easier to install an exhaust on. The stock YZ450F has a lot more room than many others as it sticks out from the frame at an angle and not straight off the side.

This means that there’s enough space in which they can put both pipes instead of just one where it would hit against another part of the engine block. Luckily, installing its kickstand does get in the way because it needs plenty of clearance around this area, so if you’re not sure of your skills, this could be a good thing.


There are four styles to choose from for the best exhaust for YZ450F, and it’s important to know what you’re looking for in order to get the right one. The stock muffler is often used as an aftermarket option if someone wants just a slight increase in power but not much sound change at all.

A tight packing style offers more resistance, so they will need slightly less gas than with other ones while also giving off some noise that might annoy neighbors or others nearby who may want silence when riding their motorbike.

An open packing type lets out about ten percent more horsepower since there’s no restriction on going up hills and passing cars without any problem. The expansion chamber style muffler is the most popular type and offers more power as well while suppressing noise by about 25 percent.

Price of the Product

Before buying the product, you must assess the price and the adjustability of your bike. You should not go for the exhausts which cross your price range. Rather you should go for the exhausts which will suit your bike and will not cost you much.

FMF or Pro Circuit Which is Applicable as The Best Exhaust for YZ450F

  • The FMF is less expensive, and it’s louder, but that can be a turn-off for some people.
  • Pro Circuit provides smoother power delivery with added horsepower, according to reviews on the internet.

The price of this exhaust system is higher than the FMF by about $200, which may outweigh other benefits if you are trying to save money. This will come down to personal preference when deciding which one you want to purchase.

Frequently Asked Questions

How Much Horsepower Does a YZ450F Have?

The Yamaha YZ450F has a 200cc engine and produces 41 horsepower. This is comparable to Suzuki’s DR-Z400S, which has a 249cc engine that produces 42 horsepower, or Honda’s CRF250R, with its 249cc engine producing 36 horsepower. On the other hand, the KTM 450 & 525 EXC models produce the most powerful of all at 45 hp each for their 350 cc engines.

How Much Horsepower Does a YZ450F Have

How Fast Does a YZ450F Go?

The top speed of a Yamaha YZ450F is quite high! This bike can go up to 60 miles per hour, about 96 kilometers per hour for those in countries that use metric system measurements. It’s an impressive number, but it might not be as much as you expected if you’re coming from, say, Europe, where 50 kilometer or 80-mile speed limit is common on their highways.

How Much Horsepower Does a 2021 YZ450F Make?

The 2019 Yamaha YZ450F is the most powerful dirt bike in its class, with 220 horsepower. You can make it even more powerful by installing a slip-on exhaust. The slip-on muffler will give you an additional 12 hp and 15 ft/lbs of torque on your 450cc motorcycle engine.

If you’re running a stock OEM exhaust system, replacing this factory part should be easy because all it takes is five minutes using common hand tools. However, it might sound like work for something as small as an exhaust system.
But many racers swear that they feel much better after doing so since their breathing has improved greatly from having less restrictive breathing patterns due to adding back some volume in the air. The 2021 series produces almost 53 horsepower, and there is also a unique production of 33lb-ft of torque.

What is the Advantage of Exhaust in Dirt BIkes?

An exhaust is a device that allows the engine’s hot, noxious gas (exhaust) to escape from an automobile. The sound of the escaping gases can be heard as they leave through some kind of muffler or another noise-reduction system.

The function and design of this part depend on the type of vehicle. For example, some vehicles are very simple in their construction, while others have more complicated systems for releasing gases, such as by chemical catalytic conversion into less toxic substances.

The advantages of having an exhaust include reduction of backpressure, which boosts performance and fuel economy; also reduce turbo lag since there will be less retained heat in the intake charge and lower air density due to greater expansion ratio(denser airs slow.


In conclusion, we hope that our top pics for exhausts should help you chose the best one for our YZ450F. Yoshimura RS-4 Full System Exhaust is my choice for the best exhaust system for your YZ450F. I have a few reasons why I think it’s so great, and they’re listed below. 

First of all, this system has been designed to be as lightweight as possible in order to improve performance without sacrificing power or torque when you need it most. It also features increased flow capacity, which means that its emissions are cleaner than ever before. Thank you and have a nice day.

Darren Matlock

Darren Matlock

Hi, I'm Darren. I love dirt bikes and everything about the off-road lifestyle. I'm passionate about motorbikes, cars, racing sports and going on adventures. If you're like me and enjoy extreme sports, you've come to the right place! I like to write articles about dirt bikes to help beginners get started. Whether you're interested in buying a dirt bike, ATV, motorcycle or want to ride for hobby, I hope my articles will inspire you to learn more about how this machine can be used to ride.

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