Best Exhaust for CRF110 (FMF, Pro Circuit, Yoshi, etc.) – Worth Buying?

If you’re in the market for an aftermarket exhaust for your Honda CRF110F, you’ve probably figured out by now that there are quite a few options out there. However, just because there are a lot to choose from, doesn’t mean that they’re all worth buying. After lots (and lots) of research, I’ve put together a list of the best CRF110 exhaust systems, pipes, and slip-ons out there.

The best exhaust for CRF110 dirt bikes is actually subjective. One must define whether they’re looking for more low-end, more midrange, or a better top-end. Also, price, fit, finish, and sound all come into play.

With that said, below are the top CRF110 exhaust systems for each different need. Some of these pipes are designed to aid in achieving a faster CRF 110 top speed while some are more focused on low-end torque. We will take a look at the best sounding exhaust, the highest performance exhaust, the pipe that is the best bang-for-your-buck.

IMPORTANT: If you have done some mods to your CRF110F then you need to pay attention to which pipes are made for modded bikes, and which are made for stock dirt bikes. I will try to note which pipes work for which types of dirt bikes.

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Yoshimura RS-9T CRF110 Exhaust

It probably comes as no surprise that Yoshimura comes in at the top spot. The RS9 Yoshimura CRF110 exhaust is built just like the ones for the bigger CRF dirt bikes. They are extremely well built and deliver significant power gains, all while at the same time being 100% legal to ride in 50 states due to the included spark arrestor.

Overall, this Yoshimura CRF110 exhaust system is probably the “best” one out there… but its not cheap. If price isn’t an issue, I’d say go with this one. If price is a concern (after all, you’re basically buying this for sound, looks, performance – in that order), there are a couple of other good options as well.

Features & Highlights

• Unique muffler shape
• Light weight exhaust sytem
• Carbon fiber end-cap
• Tunable Insert System
• Works with big-bore kit

Positive Reviews

• Easy to install
• Looks very nice
• Not too loud
• Sounds great
• Lightweight
• Improved throttle response
• Really opens the bike up (more power)

Negative Reviews

• Expensive
• No other negative reviews. Seriously.

Even though crowning the best exhaust for a CRF110 may be a bit subjective, I think this one walks-away with the win. Not only are these very well-built, they look great, sound great, and they actually improve the throttle-response and increase the power on these Honda 110cc dirt bikes.

In-the-end, you really can’t go wrong with this Yoshimura Honda CRF110F exhaust, but if you’re on a budget (or, at least budget-conscience) there is another solid Yoshimura exhaust (the RS-2), as well as some other options below.

Click here to view pricing and read reviews on Amazon.

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Pro Circuit T6 CRF110 Exhaust

When it comes to dirt bike exhaust systems, Pro-Circuit is no stranger to the scene. These guys have been around forever and they continually put out some of the very best aftermarket exhaust pipes available. The Pro Circuit CRF110 exhaust is no exception.

If you buy the CRF110F Pro Circuit T-6 exhaust, you’ll appreciate the stainless steel head pipe and mid pipe, brushed aluminum canister, and a carbon fiber end-cap. When it comes to quality, PC delivers the “name-brand” product you’d expect, plus it’s a LOT cheaper than the Yoshi.

SIDE NOTE: I installed a full Pro Circuit exhaust pipe and muffler on my old 1999 Yamaha YZ250 and it was VERY nice. It was a “Works” edition so it took a little more maintenance than some of the others, but it looked awesome! All I did was soak it with WD40 after I cleaned it so that it wouldn’t rust. It burns off when you start it the next time your ride, but totally worth it.

Features & Highlights

• Improved overall performance (from low to top end, but mostly mid to top)
• Uniquely shaped muffler design holds for more packing (quieter)
• Includes removable USFS-approved spark arrestor
• Stainless steel construction throughout head pipe
• Carbon fiber end-cap

Positive Reviews

• Priced VERY well for quality
• Good deep “braap” sound
• Improved performance throughout RPM range
• Easy to install (although some disagree)
• Improved airflow

Negative Reviews

• Not ideal for a CRF110 with a big bore kit
• Not the cheapest option (but competitively priced)
• Maximum performance gains require re-jetting

At the end of the day, the Pro Circuit CRF110 exhaust is one of the best options. Its almost HALF the price of the Yoshi RS9 and delivers much more than half of the same benefits. Is it actually the best exhaust for a CRF110F? Probably not, but then again, it just depends on what you’re looking for.

Again, the Pro Circuit CRF110 exhaust is very well-built, looks great, sounds killer, and is actually affordable compared to some of the others out there.

Click here to view pricing and read reviews on Faster-Minis.com.

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FMF CRF110 Exhaust (Powercore 4)

This FMF CRF110 exhaust is quite similar to the PC option above. Its made by one of the leaders in aftermarket exhausts for dirt bikes, FMF, and its another very affordable option.

Don’t let the price of this cheap CRF110 exhaust system fool you. Just like its sibling the KLX110 FMF exhaust, these Honda 110cc exhaust systems deliver in looks, sound, and performance. They may not look quite as nice and clean as one of the Yoshi exhaust pipes or the PC Works Connection pipes, but they still sound killer and work great… plus they’re still made by a well-known and trusted brand.

Features & Highlights

• Includes the complete exhaust system
• Much lighter than stock
• Works well with a wide range of years

Positive Reviews

• Affordable price
• Great sound
• Improved power performance
• Much better throttle-response
• Good acceleration
• Easy to install

Negative Reviews

• Re-jetting recommended (but not required)
• Not cheap (for the amount of added HP)

Really, if you’re in the market for an aftermarket exhaust for your CRF110F but you don’t want to break the bank, this is a great choice. FMF knows what they’re doing and they’re make a product that you can be proud of and that is respected among all of the other (knowledgable) riders out there.

Click here to view pricing and read reviews on Faster-Minis.com.

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More CRF110 Exhaust Systems

Of course, there are quite a few other manufactures who produce aftermarket Honda CRF110 exhausts. Here are some of the other popular brands and what they’re most-known for when it comes to their exhaust systems for this dirt bike:

• Bill’s Pipes RE 13
  • Quality pipe, great sound, improved response and power throughout
• BBR
  • Light weight, good quality, good sound
• Rocket Chubby
  • Not one of the “big dogs” in the industry but a quality option that sounds and looks great
• Two Brothers M6
  • Priced right, and sounds killer (but loud)
• Big Gun Evo
  • On the cheaper side, sounds better than stock, improved throttle response
• Piranha T4
  • Cheap exhaust, better sound than stock

CRF110 Jetting for Aftermarket Exhaust

If you’re going to rejet your CRF110 it’s going to take some trial and error. Also, there really isn’t one exact set of jets that you should run with “X” exhaust. Ultimately, your altitude and any other mods on your dirt bike will determine which jets you should run.

To get the figure out the proper jetting for your CRF110, you should make adjustments gradually. But first, you need to evaluate how the dirt bike is running and whether it needs rejetted.

• Is it running a little rich?
• Maybe its running a little lean?

After you’ve identified whether its running rich or lean (see below) you can make adjustments as-needed.

For example, if you notice your bike is running a little lean after adding a new pipe, simply adjust the jetting one setting richer at a time. Do this until your bike reaches its peak performance.

Do you need to change jetting on your CRF 110?

Yes, you may want to “play” with the jetting on your dirt bike after you install an aftermarket exhaust. See the specific manufacturer’s recommendations after you’ve chosen which pipe to go with.

Interestingly, even having the same dirt bike as your buddy, you may still need to make adjustments or even completely different jets for your CRF 110.

However, before you go and begin “playing” with the jetting, here are a few things to look for:

• Poor throttle response (especially if after a new exhaust)
• Overheating easily
• Idling high
• Bogging down
• Sputtering easily (especially at low RPMs)
• Fouling spark plugs
• Hard to start
• Loss of power

How to know if jetting is too rich?

Whether you’re completely changing the jets on your Honda CRF 110, here are a few symptoms of a dirt bike that is running too rich:

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

How to know if jetting is too lean?

If you’re CRF110 is running too lean, here a few symptoms that you should notice:

• Hard to start when cold
• Bogs down when trying to “snap” throttle
• Idles high