The Yamaha YFZ 450 is a high-performance ATV from Yamaha designed for speed and power. Vehicle exhaust systems play a crucial role in improving the vehicle’s performance and sound. The exhaust system includes the header pipe, the mid-pipe, and the muffler. The Yamaha YFZ450 exhaust is designed to improve the engine’s performance.
Changing the exhaust on the Yamaha YFZ450 can enhance its overall performance. A louder, more aggressive sound is produced, as well as increased power and torque. Modifying the exhaust system can affect the ATV’s emissions, so it may not be legal in all areas.
However, it is possible to upgrade the exhaust system of the Yamaha YFZ450 to increase power, torque, and throttle response. So read to learn more about the best Yamaha YFZ450 Exhaust system available in the market.
Yamaha YFZ 450 Overview
4 wheelers like the Yamaha YFZ 450 are high-performance ATVs (All-Terrain Vehicles) that are popular with off-road enthusiasts. ATVs with sleek bodywork, powerful engines, and excellent handling have earned the YFZ 450 its reputation as a top performer.
With a weight of just over 400 pounds, the 450 is among the lightest ATVs on the market, which makes it incredibly agile and responsive. Aluminum is largely responsible for the YFZ 450’s lightweight design.
Engine
- Engine Type: Single cylinder, four-stroke
- Displacement: 449cc
- Power: 39 Horsepower
- Bore x Stroke: 95.0 x 63.4 mm (3.7 x 2.5 inches)
- Compression Ratio: 11.4:1
- Fuel System Carburettor: Mikuni 42mm BSR
- Starter Type: Electric
Drivetrain
- Clutch type: Wet multi-plate
- Transmission: 5-speed
- Cooling system: Liquid
- Final Drive: Chain
Dimensions, Chassis & Weights
- Overall Length: 72.4 in. (1,839 mm)
- Overall Width: 46.1 in. (1,171 mm)
- Overall Height: 42.9 in. (1,090.66 mm)
- Front Suspension: Independent double wishbone, threaded preload adjustment, 9.1-in travel (231.14 mm)
- Rear Suspension: Cast aluminum swing arm, threaded preload adjustment, 10.6-in travel (269.24 mm)
- Front Tires: 21/7-10
- Rear Tires: 20/10-9
- Front brakes: 5.0 inches (127 mm), Double disc. Hydraulic disc
- Rear brakes: 6.8 inches (173 mm), Single disc. Hydraulic Disc
- Wheelbase: 50.4 in. (1,280 mm)
- Ground Clearance: 4.5 in. (114.3 mm)
- Seat Height: 31.9 in. (810.86 mm)
- Wet Weight: 405 lb. (183.7 kg)
- Dry Weight: 350 lb. (158.8 kg)
- Fuel Tank Capacity: 2.60 gal. (9.84 l)
Performance And Handling
Taking a deeper look at the Yamaha YFZ450R’s outstanding power characteristics will help us understand what makes it unique.
An impressive 38-40 horsepower is generated by the YFZ 450’s fuel-injected 449cc engine. Its top speed depends on the rider’s weight, the terrain, and the modifications or upgrades you make.
Performance of Brakes
With dual hydraulic disc brakes in the front and a single brake in the rear, the Yamaha YFZ 450 has a high-performance braking system. The system ensures complete control of the vehicle, even at high speeds, and provides exceptional stopping power.
Handling & Suspension Characteristics
Yamaha YFZ 450 motorcycles are designed to handle and control well on the roughest terrain. The ATV’s advanced suspension system is supported by a lightweight aluminum heel guard frame.
It features a double-wishbone suspension with fully adjustable shocks that provide 9.1 inches of travel. A cast aluminum swingarm with fully adjustable shocks provides up to 10.6 inches of travel on the rear.
Maximum speed
Generally, top speed refers to the fastest speed at which a vehicle can travel under ideal conditions. Vehicle top speeds are determined by many factors, including engine power, aerodynamics, weight, tire grip, and other performance characteristics.
Yamaha YFZ450 motorcycles reach top speeds of about 75 to 80 mph (120 to 129 km/h). In high-performance vehicles, top speed is often an important factor. Cars and motorcycles that are designed for racing, such as sports cars and supercars.
There are times, however, when a vehicle’s top speed isn’t practical or legal, as it can be dangerous and often exceeds the speed limit.
What are the Best Features of the Yamaha YFZ 450?
1. Powered by a race-ready engine
With its technology-driven design, the YFZ450R is among the most advanced Sport ATVs on the market. In addition to the fast-revving, titanium-valved, 449cc fuel-injected engine, the chassis is lightweight, professional-caliber aluminum/steel. It is the combination of power and chassis that makes for a championship-winning machine time and time again.
2. Advancing Frames
YFZ450R is ready for motocross. A lightweight aluminum weldless frame with a tension-steel bottom frame lets the engine sit lower for excellent mass centralization. In addition to providing light, sharp handling, and comfort, suspension components and settings reduce weight.
3. Aggressive Bodywork
Specifically designed for rider comfort and ergonomics, the bodywork has more space in the corners. Seat shapes are padded in the right places, and the body panels come off easily without tools. So the fenders can be removed without removing the battery or other components.
4. Innovative Cylinder Heads
A titanium five-valve cylinder head delivers abundant power in the mid-range and top-end, with more “hit” feeling right off idle. Further improving engine performance is the higher compression ratio.
5. Ignition system
In order to deliver precise fuel delivery, the YFZ450R features Yamaha Fuel Injection (YFI). This system features a large 42mm Mikuni® throttle body and a 12-hole injector for maximum fuel atomization. For easy, reliable start-up and warming, the system also features ISC (Idle Speed Control).
6. Slipper Clutch with Assist
By reducing clutch lever effort and increasing clutch plate pressure, assist-and-slipper clutches reduce fatigue. Especially when downshifting, this clutch system reduces the effect of engine braking on cornering.
What Are The Different Types of Yamaha YFZ450 Exhaust Available?
1. SLIP-ON EXHAUSTS
There are many types of exhausts out there, but slip-on exhausts are probably the most common. Slip-on exhausts don’t replace the mid-pipe, and they primarily replace the muffler. When it comes to the exhaust system, this is going to give you a very different sound, as well as a bit more breathing.
There are usually a couple of bolts that make up a slip-on exhaust kit. Once you remove the old one and replace it with the new one, you’ll have a totally different sound for the machine, as well as some extra power.
A slip-on exhaust kit is a great, easy, and cost-effective alternative to a full exhaust system since they’re less expensive.
2. FULL EXHAUST KITS
Obviously, a full exhaust system is the next step up from a slip-on exhaust system. The kit works by taking your slip-on exhaust and adding a mid pipe that goes all the way to the motor. Thus replacing the full exhaust to get the full power benefit and the unique sound that you want.
A full exhaust kit can also give you that cool-looking factor, such as blue-tinted thermal burning, depending on the type of pipe you choose.
Furthermore, you get the extra power and sound you want from a full exhaust system.}
3. CUT OUT EXHAUSTS
A cut-out exhaust is another type of exhaust that kind of sits in between these two. If you don’t want to make too much noise when out riding, you can flip the switch on the stock exhaust system by installing a cut-out exhaust.
It’s great to be able to control what volume you want your ATV or UTV to be at with a cut-out exhaust system. It comes with a switch that will dump the exhaust right before the muffler when you flip it.
What are the Benefits of Upgrading the Yamaha YFZ450 Exhaust System?
Upgrading the Yamaha YFZ450 Exhaust can be beneficial. There are a number of benefits to upgrading the exhaust system on the Yamaha YFZ450.
1. Engine Performance
Exhaust systems play an important role in the performance of Yamaha YFZ450 engines. The exhaust flow is optimized, resulting in an increase in power and torque. As a result, exhaust gases are channeled away from the engine, and exhaust system pressure is decreased. It enhances the performance of the engine because it is able to breathe more efficiently.
Additionally, the Yamaha YFZ450 exhaust system reduces the engine’s noise during combustion in addition to improving its performance. Mufflers are critical components of exhaust systems responsible for mudding the sound.
The sound produced by some aftermarket exhaust systems, however, may be more appealing to some riders due to its loudness and aggressiveness. As a matter of fact, You must follow the local emissions regulations and legal requirements when making modifications to your exhaust system.
2. Enhanced Performance
The Yamaha YFZ450’s factory exhaust system meets emission regulations. Performance can be limited as a result. An aftermarket exhaust system can improve the flow of exhaust gasses and increase the vehicle’s power output.
Better Sound
The Yamaha YFZ450 can also benefit from an aftermarket exhaust system. This exhaust note is deep and aggressive, sure to turn heads.
3. Weight Reduction
Most aftermarket exhaust systems are constructed from lightweight materials like titanium or stainless steel. The vehicle’s handling and maneuverability will be improved as a result of reducing its overall weight.
4. Increased Throttle Response
Installing an aftermarket exhaust system can improve throttle responsiveness. Enhancing the vehicle’s acceleration and riding comfort.
What are the Best Yamaha YFZ450 Exhaust Systems?
1. FMF Racing Powercore 4
FMF Racing Powercore 4 exhaust systems are popular among ATV enthusiasts. Power and torque are increased across the entire RPM range while noise levels are reduced. Made from stainless steel and aluminum, it comes with a spark arrestor that can be removed for off-road use.
2. HMF Engineering Performance Series
The HMF Engineering Performance Series exhaust system is another popular choice. Designed for more power and better sound, the engine delivers increased horsepower and torque. In addition to the USFS-approved spark arrestor, it features stainless steel headers and mid-pipes.
3. Pro Circuit T-4
The Pro Circuit T-4 exhaust system is a high-performance exhaust system. A weight-saving engine that increases power and torque. For off-road use, the spark arrestor is removable and made of high-quality stainless steel.
4. Yoshimura RS-2
The Yoshimura RS-2 exhaust system is a premium exhaust system. With a low decibel output, this engine delivers maximum power and torque gains. Stainless steel and carbon fiber combine for a sleek, stylish design.
What To Look For When Getting Exhaust Kits For Your Yamaha YFZ450?
As soon as you’ve decided on what exhaust type you want, you’ll need to figure out all the extra stuff you’ll want to keep in mind when you’re shopping for your kit. The following is a list of everything you should be looking for.
1. SINGLE VS. DUAL PIPES
In terms of exhaust setups, you have a choice of either a single exhaust or dual exhaust. In terms of how you want your machine to run, you can choose between dual pipes and a single pipe. A tons of riders swear by dual pipes and some ride exclusively with single pipes.
2. REPACKABLE MUD MUFFLERS
If you do a lot of mud riding or mud bogging, you might want to consider a mud muffler that you can repack. Depending on how much mud riding you do, some of them come with easy V-band clamps you can remove and repackage. Others have rivets that you have to drill out, so it’s up to you.
3. SPARK ARRESTORS
In Moreover, if you’re out riding in a dry field or something similar, you don’t want to start a fire. You’re going to need to run that spark arrestor a lot of the time. You won’t have to worry too much about spark arrestors because most exhaust systems come with them. Just make sure you look into installing one so you don’t set a forest on fire.
4. TUNERS
Lastly, when it comes to Yamaha YFZ450 exhaust systems, or anything like that, you should really consider tuning. In order to avoid destroying a vehicle, most exhaust manufacturers say you have to tune it after installing an exhaust kit.
Adding a tune to your engine is going to give you better performance, make you safer, and not ruin your engine, because no one wants to ruin their engine. Lean is bad, but the machine needs more fuel, so adding that tuning mechanism will make you get more power, be safer, and not ruin your engine.
Used YFZ 450 Buying Tips
In tough economic times, buying a brand new ATV isn’t an option for everyone, and it’s impossible to do while in school and working part time, so what are ATV riders to do? It’s simple, buy used and replace parts over time as your budget allows.
In the future, you’ll probably upgrade a lot of parts on your new sport ATV. You should start by finding a good deal on the ATV you’re interested in building. A Yamaha YFZ 450 would be high on our list of possible choices if we were to build yet another low budget ATV project, and here is why.
Yamaha’s YFZ 450 marked the beginning of a new trend with sport ATVs that could race stock. When you’re building an ATV project, many of the OEM Yamaha YFZ 450 parts are high performance by design, which is a good thing to have. Right now, there are a lot of used ATVs available on several popular hot-spots, which is also a good thing because if you’re patient, you can negotiate a better deal.
The two main concerns you should have when purchasing the core of your project are:
(a) Can you use it immediately and have fun with it?
b) Is everything functioning properly.
Having an ATV that you can’t use because of a broken part is too expensive to fix without first saving up is the last thing you want.
Even though you can ride the ATV as is, you may find yourself wanting to change your build plans. You might be willing to spend a bit more on a new ATV exhaust system over other upgrades if you find yourself willing to ride a YFZ 450 with only new pipes.
Is it necessary to Upgrade Exhaust Systems of Yamaha YFZ450?
If you’re thinking about upgrading the exhaust on your machine, you’re probably thinking about power, sound, or maybe just a bit of bling. In terms of power, exhausts are a great option, since they allow for more air into the engine and more air out.
In addition to that, you can choose an exhaust kit with either a muffled or a fuller sound, and you can also find many exhaust kits that can enhance the appearance of your ATV or UTV.
Conclusion
By upgrading the exhaust system of the Yamaha YFZ450, notable improvements in performance and sound can be achieved. Numerous aftermarket exhaust systems are readily available, each with its distinctive advantages and attributes. It is crucial to assess key factors such as performance gains, sound quality, weight reduction, and cost before selecting an exhaust system. When equipped with the appropriate exhaust system, the Yamaha YFZ450 can reach unprecedented levels of power and performance, captivating even the most experienced riders.
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FAQ
What is the weight of the Yamaha YFZ450?
A: The weight of the Yamaha YFZ450 varies depending on the year and model, but it typically ranges from 386 to 405 pounds (175 to 184 kg).
What type of suspension does the Yamaha YFZ450 have?
A: The Yamaha YFZ450 features a fully adjustable, independent double-wishbone suspension system with piggyback shocks.
What are some common aftermarket upgrades for the Yamaha YFZ450?
A: Some common aftermarket upgrades for the Yamaha YFZ450 include exhaust systems, air filters, fuel controllers, and performance tires.
What is the price range of the Yamaha YFZ450?
A: The price of a Yamaha YFZ450 varies depending on the year, model, and location, but it typically ranges from $7,000 to $10,000 USD.
Is the Yamaha YFZ450 suitable for beginners?
A: The Yamaha YFZ450 is a high-performance vehicle design for experienced riders, and it may not be suitable for beginners. However, Yamaha offers other models that are more beginner-friendly, such as the Yamaha Raptor 700.