Are you looking for the best exhaust for YFZ450R? Then, you’re in the right place.
Since its introduction in 2009, the Yamaha YFZ450R has stood out, towering heads and shoulders above other ATV motorbikes.
The YFZ450R is primed for winning nearly every ATV MXGP competition, thanks to its excellent fuel-injected engine, elongated suspension system, power cut-off tether switch, and a blend of engine limiters.
The upgraded 2017 YFZ450R, replete with versatile tweaks and improvements and typified by an almost zero-maintenance 49cc engine, is considered the Holy Grail for adventurous ATV riders.
If you own a YF50R, you’ll need to install quality aftermarket parts on your ATV motorbike to keep it in top gear. And one of the crucial replacements you’ll have to opt for sooner than later is the YFZ450R’s stock exhaust for sustaining the ATV motorbike’s power.
Best Exhausts for YFZ450R – Comparison Table
| Image | Model | Price |
|---|---|---|
| Big Gun Evo Race Slip-On Exhaust (Top Pick) | Check Price |
 | FMF Megabomb 44299 Exhaust | Check Price |
 | Sparks Racing PY09450YFZSS-M Exhaust | Check Price |
1. Big Gun Evo Race Slip-On Exhaust (Editor’s Choice)
Big Gun Evo is the best exhaust for YFZ450R.
As a proud owner of the Yamaha YFZ450R ATV, if you’re looking for a sturdy and resilient aftermarket slip-on exhaust, then you can bank on the Big Gun Evo Exhaust. For a start, this slip-on exhaust is thoroughly compatible with the 2009-2019 Yamaha YFZ450R, implying that the replacement will help sustain your motorbike’s performance.
The entire exhaust pipe has been shaped out of industrial-grade stainless steel using TIG (inert tungsten welding) method, making the Big Gun Evo Carbon Series exhaust incredibly durable.
The TIG welding technology creates an intense, streamlined arc between the object (the exhaust) and a spiked tungsten electrode, using helium or argon. The minute yet strong and concentrated arc furnished by the sharp electrode ensures precision and superior welding.
The Evo Race Slip-On Exhaust by Big Gun comes equipped with a built-in aluminum sleeve that not only helps drive out noxious fumes but keeps the exhaust lightweight.
You can easily disentangle the CNC-billeted aluminum tip from the Big Gun exhaust muffler for cleaning and servicing to restore its original look.
Features
- USFS (United States Forest Service)-certified screen-styled detachable spark arrestor
- Works perfectly with Yamaha YFZ450R and many other ATV/RTV motorbikes
- Durable stainless-steel construction
- The CNC-machined aluminum end tip is detachable for cleaning and servicing.
Pros
- Innovatively and ergonomically designed to serve as a seamless replacement for OEM exhaust
- Crafted out of high-quality stainless steel by exploiting TIG technology for boosting durability
- 6061 aluminum casing on the exhaust facilitates shedding the exhaust fumes
- It helps increase fuel efficiency, engine performance, shed toxic smoke, and keep noise levels low
Cons
- Contrary to claims made by the manufacturer, this slip-on does not boost horsepower noticeably.
2. Dasa Racing YR-5001 Exhaust
One of the most hardwearing and performance-oriented exhausts you can choose for your YFZ450R is the Dasa Racing YR-5001. You can rest assured that the X Dasa Racing Class Series Complete Exhaust will be entirely companionable with the YFZ450R.
The entire exhaust system has been handcrafted in the US, and therefore the product is of premium quality. Every component of this Dasa Racing exhaust, from the pipe to the canister mount to the pipe flange, has been crafted painstakingly.
So you can take it for granted the YR-5001 will effectively resist wear and tear and keep performing for years. Seamless and precision TIG welding goes a long way in guaranteeing long-term functional life. This stainless steel multistage exhaust comprises a head cylinder, mid conduit, and an exhaust tube that has been specially designed to fit on YFZ450X and YFZ450R model years 2009 through 2014.
This Dasa Racing stainless steel exhaust system has been created by hands from scratch and boasts extraordinary features.
Features
- Fabricated using aerospace-grade steel
- The Head cylinder is specially crafted for peak power output.
- TIG-welded for durability and resilience
- Complete exhaust system with spark arrestor, muffler, and header
Pros
- Premium multistage stainless steel exhaust works with YFZ450X and YFZ450R (model years 2009-2014)
- Stocky head cylinder flange, extruded canister mount, trick billet end sleeves, and TIG welds bolster hardiness.
- The end casings unbolt effortlessly, which facilitates smooth and quick canister repackaging.
- Extensive tapers with precision “butt” welds and fitments
- Shaped out of 7075 anodized aluminum, the flanges effectively resist wear and tear.
- Designed innovatively, the spigots enable free-floating of the header minus leakage.
Cons
- There may not be a perceptible or significant gain in performance.
3. FMF Megabomb 44299 Exhaust
The FMF Megabomb 44299 exhaust system is guaranteed to boost the horsepower of your YFZ450R or YZF450X effectively. To be specific, once you install the Megabomb Titanium exhaust by FMF on your Yamaha YFZ450R, you can expect a horsepower boosting of up to 3HP. On the other hand, this titanium exhaust’s muffling quality can lower noise levels by approximately1.5dB.
The Megabomb exhaust has been shaped out of FMF’s patented and proprietary Ti-Metal, which helps keep the system lightweight. This muffler stands out as it has been intelligently engineered to help your ATV motorcycle deliver aggressive power for enhancing performance. The FMF Megabomb 44299 has always been in a class of its own for power performance; the newest edition comes across as the most upgraded.
FMF has made the most of the best quality signature blend of titanium alloy for crafting the Megabomb exhaust system. Once you fix this exhaust to your Yamaha YFZ450R, you can look forward to accomplishing hefty power uplifts throughout the RPM spectrum. Not only is this FMF exhaust quieter compared to the OEM unit, but its lightweight built also makes it lighter.
The twin-stage core design goes a long way in boosting the equipment’s operational life and decreasing deafening noise.
Features
- Used to the hilt by seasonal ATV riders and MXGP teams: Integrated with next-gen technology
- Can help enhance power by as much as 3HP
- It brings down noise level by a maximum of 1.5dB
Pros
- Spark arrestor approved by USFS requires minimal maintenance and has a stainless steel spark arrestor screen.
- It comes with aerospace-grade sound-muffling materials, chambers, and internal baffles for accelerating exhaust flow.
- Fabricated using the best proprietary blend of titanium alloy for buttressing longevity
- Impeccable craft for compatibility with YFZ450R exhaust’s needs
- Designed exquisitely to perform
Cons
- You may have to make changes in the vehicle’s body (except YFZ450R) for installation.
4. Sparks Racing PY09450YFZSS-M Exhaust
If you want to give your Yamaha 450R an unprecedented power boost with an exhaust upgrade, go for Sparks Racing PY09450YFSZSS-M. This exhaust from Sparks Racing is a full-system, and therefore more efficient and performance-oriented than a slip-on muffler. The Sparks Racing complete exhaust system also tends to be more performance-driven than aftermarket exhausts that work as a full system and a slip-on.
Sparks Racing has conducted stringent tests with the exhaust in actual conditions, making professional bikers use the exhaust in drag and motocross races. This exhaust from Sparks Racing is available in two variants-X6 Big Core and X6 Race Core. The X6 Race Core can be made to work with spark arrestors and inserts that help muffle engine noise.
However, though you can make a Big Core compatible with a spark arrestor, you cannot set it up with noise-reduction inserts.
Features
- Includes hardware for installation
- Complete exhaust care and installation tuning instructions provided
- 100% produced in the US
Pros
- Made out of 6061-T6 aluminum alloy, this muffler is lightweight as well as durable.
- It comes with a spark arrestor.
- Compatible with noise-reducing inserts
Cons
- DIY installation can be a hassle; better to engage a technician
- Quite expensive
How to Choose the Best Exhaust for Yamaha YFZ450R?
When it comes to upgrading your bike, it is possibly the motorcycle’s exhaust that can help improve performance most effectively. But, at the same time, going for an exhaust upgrade may also help accentuate the bike’s looks and reduce noise levels.
Now regardless of whether you opt for a slip-on muffler or a full exhaust together with a brand new air-intake system, you’ll have to consider some crucial aspects.
Bear in mind that an exhaust upgrade comes at a price (a complete upgrade is costly). Hence you’ll be pretty discerning when choosing from a variety of products so that you pick the one that is your best fit.
Why Choose an Aftermarket Exhaust System?
As your YFZ450R came equipped with a stock exhaust, why’d you want to replace it with an aftermarket slip-on muffler or a complete system? Following are some excellent reasons:
Makes Your Bike Lighter
The chunky OEM steel dual exhaust system comes in the way of revving up the motor for vrooming at breakneck speeds. Almost all aftermarket brands tend to be lightweight as these are made out of lighter metals and have slimmer frames.
Boosts Performance
Aftermarket exhaust models, by and large, helps stimulate airflow inside the engine by lowering the backpressure generated by an OEM muffler. Consequently, fuel’s internal combustion takes place with greater efficiency, which ultimately boosts your bike’s power and performance.
Minimizes Risks of Becoming Deaf
As their terminology indicates, slip-on muffler exhausts help muffle or dampen the sound waves produced by your YFZ450R’s engine. An aftermarket muffler muffles the sound by locking in sound waves within a series of baffles.
Helps Save
Though aftermarket products do not come cheap, they’re always lighter on your pocket than stock or OEM versions.
Full Exhaust for YFZ450R vis-à-vis Slip-on Muffler
Motorcycle exhausts are available in two distinct varieties or types:-complete exhaust system and slip-on muffler exhaust. An all-in-one exhaust system is installed at the engine head while a slip-on replaces only the OEM muffler. In this section, we briefly explain the two exhaust categories along with their benefits and drawbacks.
Complete Upgrade
If you’re a professional biker, routinely participating in motocross events and off-road competitions, then a full exhaust is a way to go. A full exhaust thoroughly replaces the factory-installed exhaust system, starting from the head canister to the muffler. Nevertheless, bear in mind that a complete upgrade with a full exhaust is always more expensive than a slip-on.
The benefits of opting for a full exhaust are that you’ll be able to ride your bike on full throttle with less heft. But, on the flip side, you’ll struggle if you’re doing the installation yourself.
Slip-on Mufflers
As the name indicates, a slip-on exhaust requires you to put on the device after simply detaching the stock piece. The advantages of opting for a slip-on exhaust are that it is easy to set up, offers value for money, and tempers the boisterous engine noise. However, slip-on exhausts may not help boost performance or lower overall heft.
Final Thoughts: the Best Exhaust for YFZ450R Is…
So, there you have it- four top exhausts for YFZ450R from the most reputed brands, including Big Gun, Dasa Racing, FMF, and Sparks Racing. If you only need a slip-on exhaust, you can choose Big Gun or FMF, but if you’re looking for a complete overhaul, pick Dasa Racing or Sparks Racing.
The Big Gun Exhaust is our first choice from all exhausts for YFZ450R reviewed in this article.