Best Honda CRF250F Exhaust (FMF, Pro Circuit, Yoshimura) – Which One?

Are you looking to upgrade your Honda CRF250F exhaust system? If so, I’ve got you covered! Being a Honda freak, I’ve done A LOT of research on this bike and I’ve put together a list of what I personally consider to be the best CRF 250F exhaust pipe, slip-on, muffler, etc.

Yes, there are a handful of decent options to choose from, but if you’re looking for a truly good exhaust system for your dirtbike, I recommend sticking with one of the top brands in the industry. (Yoshimura, Pro-Circuit, FMF)

However, picking out the best exhaust can be somewhat subjective. For example, some of the exhaust systems and pipes offer a significant improvement to the low-end and midrange, while others are better for increasing the top-end power. Also, increased performance usually comes at a cost – both in terms of price and in terms of more (louder) noise.

Basically, you just have to decide what’s most important to you. For instance, which of the following are you looking for from your CRF250F?

• More all-around power?
• Faster top-end speed?
• Increased low-end torque?
• Overall better throttle response?
• Louder, throaty sound?

Sadly, just one pipe may not always be the best option for each objective. However, any one of the following aftermarket exhausts for a Honda CRF250F should improve ALL aspects to some degree, but they just might focus more on the top-end or bottom-end power.

With all of that in mind, the following are the top CRF250F exhaust upgrades that I’ve found. These modifications are what the majority of people consider to be the best performance exhaust, the loudest, and the quietest, and there’s even a solid option for a cheap exhaust.

---

Yoshimura RS2 Exhaust

Here. We. Go. Are you ready for the absolute best CRF250F exhaust on the market? Good, because the full Yoshimura CRF250F exhaust system reigns supreme (at least in my opinion).

Even when compared to other brands, this Yoshimura exhaust pipe and muffler combo sits at the front of the pack in terms of quality, performance, and sound.

The CRF 250F Yoshimura exhaust comes from the original Yoshi TRC exhaust, and it is engineered to provide more power, better power delivery, and super crisp throttle response. Oh, and did I mention that Yoshi sound!?

Overall, the Yoshimura Honda CRF250F exhaust is my favorite… in case you couldn’t tell. It’s the best-sounding pipe, makes plenty more power than stock, and weighs less than stock. In fact, I even went with the Yoshimura CRF50 exhaust as the overall best system as well.

I can’t imagine somebody not being happy with their Yoshimura exhaust… unless of course, that sticker price doesn’t sit well. Speaking of that, here are the most important features and highlights, as well as the positives and negatives of this Honda 4-stroke exhaust system.

Features & Highlights

• Uniquely shaped sleeve (looks and sounds cool)
• Large core and increased muffler packing volume (makes it quieter)
• Stainless steel cone end-cap
• Stainless steel header and tail-pipe
• Spark arrester included (USFS Approved)
• Improved horsepower and torque throughout the entire powerband

Positive Reviews

• Improved low-end
• Improved top-end
• Built great
• Looks awesome
• Weighs less than stock
• Not too loud
• Great throttle response
• Easy to install
• Great for stock 250cc Honda
• Best sounding exhaust

Negative Reviews

• Expensive
• Nothing else, LOL

Even though picking the best CRF 250F exhaust can be subjective, I think most would agree with me here. Not only do they make more horsepower and torque, but they also look and sound great, all while improving throttle response.

Click here to view pricing and read reviews on yoshimura-rd.com.

---

Pro Circuit T6 Exhaust

Being one of the other industry leaders, Pro-Circuit is known for making one of the best exhaust systems for a CRF250F dirt bike.

In fact, the Honda CRF250F Pro Circuit exhaust makes the Honda sound better, look better, and perform better than a standard exhaust system. The T-6 exhaust is made from stainless steel and brushed aluminum, and it has a carbon fiber end cap on the muffler.

Bottom line, PC knows how to create a quality exhaust system. They make some of the best KLX140 exhaust systems you can buy, and I’ve personally run one on a Yamaha YZ250. It was great!

Features & Highlights

• Improved performance throughout RPM range
• Titanium canister
• Uniquely shaped muffler allows for more packing (quieter without loss of performance)
• Carbon fiber end-cap
• Stainless steel header
• Removable USFS spark arrestor

Positive Reviews

• Sounds good (deep, throaty tone)
• Great quality and finish
• Easy to install
• More airflow
• More backpressure
• Better throttle response

Negative Reviews

• Not cheap
• It is a little loud without the insert

The Pro Circuit CRF250F exhaust is definitely one of the best options on the market. These exhausts are well-built, look great, and sound great. What’s not to like?

Click here to view pricing and read reviews on CRFs-only.com.

---

FMF Powercore 4 Exhaust (Slip-On)

Although I’ve never personally owned a dirtbike with an FMF exhaust, I have been around them and they do sound good.

Even though Flying Machine Factory makes some very popular accessories, dirt bike graphics, apparel, and the popular FMF goggles, they’re most known for their dirtbike exhausts (most notably, the powerbomb). There’s little doubt that FMF is one of the most popular brands for many weekend-warrior riders (like us non-professionals).

FMF makes one of the best exhausts for the money, and there’s no doubt you’re getting a solid “bang for your buck” product if you do opt for one of their setups. And quite possibly the king of “good deals” is the CRF250F FMF slip-on exhaust. These affordable mufflers are one of the most popular FMF CRF110F exhaust options as well.

NOTE: This is a muffler and not a complete exhaust system with a new head pipe.

Features & Highlights

• Easy to repack
• Lightweight
• Works well with a wide range of years
• Increase in overall power and torque

Positive Reviews

• Cheap(ish) price
• Sounds really good! (deep and throaty tone)
• Noticeable performance increase in the low and mid-range
• Overall improved throttle response
• Better acceleration
• Built solid
• Fast and easy to install

Negative Reviews

• Not a huge increase in horsepower
• It does not include a new head pipe

There’s no doubt, if you’re not quite ready to spend your dough on a full system, the FMF slip-on for these Honda CRF250F dirt bikes is a fairly inexpensive option. You get improved low-end and mid-range power, and you’re bike will look and sound even better.

Click here to view pricing and read reviews on fmfracing.com.

---

Other CRF250F Exhaust Systems

Now, don’t get me wrong, there are other exhaust manufacturers out there that are making exhausts for CRF250F dirtbikes. However, there aren’t as many exhaust systems for this dirt bike as there are the mini-bikes or the high-performance MX and enduro race bikes.

With that in mind, here are a couple more options that you may want to look into:

• CRF250F Belparts Exhaust
  • A race exhaust, no spark arrestor, EJK Fuel Injection tuning kit, and intake kit recommended
    
• CRF250F Viola Exhaust
  • A race exhaust, no spark arrestor, EJK Fuel Injection tuning kit, and intake kit recommended

CRF250F Jetting for Aftermarket Exhaust

After installing an aftermarket exhaust, you may need to re-jet your CRF250F.

It’s not uncommon to re-jet your dirtbike after upgrading your exhaust. Usually, you’ll need to adjust so that your bike runs a little richer after adding a new pipe. Not always, but often enough to warrant checking.

Should you change jetting on your CRF 250F?

If your Honda 250cc is running too lean after adding a new pipe (it likely is), simply adjust the jetting one setting richer at a time and then test. Do this after every adjustment and repeat until the bike reaches its peak performance.

Here are the main symptoms to look for when deciding if you need to adjust the jetting:

• Spark plug fouling often
• Sputters easily
• Bogs down
• High idle
• Poor throttle response
• Easily overheats
• Hard to start
• Loss of power

Is your jetting too rich?

If you add a new exhaust for your Honda CRF250F, you probably don’t need to worry about the dirt bike running rich. It’s more likely to be running lean. Either way, here are the symptoms of a bike that is running rich:

• Hard to start (when hot)
• Sputters or hesitates (at high RPMs)
• Fouled spark plug (or fouls often)
• Poor throttle response overall
• Loss of power

Is your jetting too lean?

As mentioned, this is what you’ll want to be even more aware of. If a Honda CRF 250F is running lean, there are a few symptoms that you should notice:

• Hard to start (when cold)
• Cuts out/bogs down when trying to “snap” throttle
• Idles high

With this in mind, you can either adjust your current settings or purchase new jets.