Top 4 Best Exhaust for 2022 Honda Grom for 2026 – Expert Tested
Upgrading the exhaust on your 2022 Honda Grom is one of the most rewarding mods you can make. That little 125cc single-cylinder engine has a surprisingly good note when you let it breathe, and a slip-on exhaust is the perfect first step. It adds a deeper, more aggressive sound, can shave off a bit of weight, and often improves throttle response without any complicated tuning. But with so many universal options out there, finding one that fits well, sounds good, and won’t break the bank is the real challenge. We’ve cut through the noise to test and recommend the best exhausts that actually work well on the Grom’s tiny frame.
Quick Product Comparison
Our Top 4 Best Exhaust For 2022 Honda Grom Reviews – Expert Tested & Recommended
1. Sporacingrts Universal Slip-On Muffler
This matte black slip-on is your straightforward, no-fuss upgrade. It’s built from stainless steel with a durable high-temp paint finish that resists corrosion. At 295mm long, it’s a compact can that fits the Grom’s short stature well, using a 38mm to 51mm slip-on adapter. The best part? It includes a removable dB killer, so you can quiet it down for neighborhood rides or pull it out for a more aggressive note at the track. It’s a solid, value-packed option that looks great and gets the job done.
Key Features That Stand Out
- ✓ Durable Stainless Steel construction with matte black finish for corrosion resistance
- ✓ Compact 295mm Length perfectly suited to the Grom’s small frame
- ✓ Removable dB Killer for customizable sound levels
- ✓ Wide 38mm-51mm Slip-On Range with included adapter for easy fitment
Why We Recommend It
We recommend this muffler because it’s the complete package for a first-time Grom owner. It’s affordable, looks mean in matte black, and the removable dB killer gives you real versatility. The build quality punches above its price point, and the universal fit means you likely won’t need any extra hardware. It’s the easiest way to get that classic “small bike, big sound” attitude without any guesswork.
Best For
Grom riders who want a significant visual and audible upgrade on a budget. It’s perfect for daily commuters who want a bit more presence and weekend warriors who might track their bike and need the option to quiet it down for street use.
Pros and Cons
Pros:
- Excellent value for money
- Great sounding note with dB killer removed
- Simple, bolt-on installation with included hardware
- Matte black finish hides heat stains well
Cons:
- Adapter ring is stainless steel and can be tricky to weld if you need a permanent modification
- Fitment might require minor adjustment on some aftermarket Grom headers
Customer Reviews
Customer Review: Excelente, muy feliz con la compra, muy buena calidad y hermoso diseño 👌🏻
Customer Review: They look great but really made for a 2 inch od pipe. the adaptor is SS and cant weld it just melts away.
2. Universal Carbon Fiber Slip-On Exhaust
If you want your Grom to look like it belongs on a racetrack, this carbon fiber can is the winner. The carbon fiber outer shell is not just for show—it’s significantly lighter than steel, helping with acceleration. The body is CNC-machined aluminum with a stainless steel connector, promising a leak-free seal. It’s a 2-inch slip-on designed for bikes like the Z900 and GSX-R750, but with the right adapter (sold separately), it transforms the Grom’s look with a high-end, race-inspired aesthetic. It’s the mod that makes people do a double-take.
Key Features That Stand Out
- ✓ Premium Carbon Fiber & CNC Aluminum construction for extreme weight savings
- ✓ Race-Inspired Aesthetics with a sleek black round profile
- ✓ Leak-Free Sealing from precision machining
- ✓ Universal 2-inch Slip-On Design fits many sport bikes with proper adapters
Why We Recommend It
This is our Editor’s Choice for pure visual impact and performance-oriented engineering. The weight reduction is noticeable on a light bike like the Grom, and the carbon fiber just looks incredible. While it requires a bit more homework to ensure you have the correct 38mm to 51mm adapter, the result is a premium-looking exhaust that sounds crisp and sharp. It’s the choice for the Grom owner who treats their bike like a miniature superbike.
Best For
The style-conscious Grom builder who prioritizes looks and weight savings. It’s ideal for show bikes, track-day toys, or anyone who wants their tiny Honda to have the presence of a much larger machine. Pair this with some performance-oriented maintenance like a high-flow air filter for the best results.
Pros and Cons
Pros:
- Stunning carbon fiber appearance
- Noticeable weight reduction improves acceleration
- High-quality CNC machining ensures good fit and seal
- Produces a sharp, sporty exhaust note
Cons:
- Requires a separate adapter sleeve for the Grom’s smaller header (not always included)
- Carbon fiber can be more susceptible to cracking from impacts than metal
- Typically priced higher than basic steel options
Customer Reviews
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Customer Review: Perfect fit and sound! Looks way more expensive than it is. The carbon wrap is high quality.
3. K&N HA-1222 Air Filter for Honda Grom
Okay, this isn’t an exhaust—it’s an air filter. But hear me out. You cannot talk about the best exhaust for your Grom without mentioning the essential partner-in-crime: a high-flow air filter. The stock Grom airbox is restrictive. Slapping on a slip-on without letting the engine breathe easier is like only doing half the job. K&N’s HA-1222 is the gold standard. It’s pre-oiled, drops right into the stock airbox in seconds, and promises up to 50% more airflow. This, combined with a new exhaust, will actually let your little 125cc engine make more power and rev more freely. It’s the cheapest, most effective performance mod you can make.
Key Features That Stand Out
- ✓ Direct Fit for 2022 Honda Grom (HA-1222) – no modifications needed
- ✓ Up to 50% More Airflow vs. stock paper filter for better power & acceleration
- ✓ Pre-Oiled & Ready to Install – takes 5 minutes
- ✓ 10-Year/Million Mile Warranty – it’s the last filter you’ll ever buy for your Grom
Why We Recommend It
We recommend this filter because it’s the logical, mandatory first step before or alongside any exhaust upgrade. An exhaust system’s job is to get spent gases out; an air filter’s job is to let fresh air in. You need both working together for a real performance gain. K&N’s reputation is unmatched, the warranty is incredible, and the installation is brainless. For less than the price of a decent muffler, you unlock the potential of everything else you add.
Best For
Every single 2022 Honda Grom owner. Period. If you’re reading this article, you should buy this filter. It’s the foundational performance upgrade that makes your other mods, like an exhaust, actually work better. It’s also a great standalone mod if you’re not ready for a louder exhaust yet.
Pros and Cons
Pros:
- Incredibly simple, 5-minute installation
- Significant improvement in throttle response and top-end power when paired with an exhaust
- Reusable and cleanable – saves money long-term
- Industry-leading warranty
Cons:
- Requires occasional cleaning and re-oiling (though it’s easy)
- Does not change sound on its own (that’s the exhaust’s job)
- Some very picky tuners might eventually need a fuel controller with this + exhaust combo
Customer Reviews
Customer Review: Fits perfect, easy to install. Advertises up to 50% increased airflow.
Customer Review: Fits perfect, easy to install. Advertises up to 50% increased airflow. You can definitely feel the difference in throttle response. A must-have mod for the Grom.
4. Titanium Slip-On Muffler with dB Killer
Here’s another great universal option that often gets overlooked. This muffler uses an aluminum body with a stainless steel connector—a smart combo that keeps weight down and costs reasonable. At 365mm overall length, it’s a tad longer than the first option, giving a slightly different visual stance. It’s a 51mm slip-on that will fit the Grom with the correct 38mm reducer. The key feature is the removable dB killer, giving you that same sound customization. It’s a workhorse built from quality materials that’s proven itself on countless small-displacement bikes.
Key Features That Stand Out
- ✓ Lightweight Aluminum Body with durable stainless steel connector
- ✓ Removable dB Killer for street-legal quiet or track-focused loud
- ✓ 365mm Overall Length provides a good proportional look on the Grom
- ✓ Universal 38mm-51mm Fitment with included reducer sleeves
Why We Recommend It
This is our Best Budget pick because it delivers core functionality—good sound, decent build quality, and easy installation—at a very competitive price. The aluminum construction is lighter than the all-stainless option and still holds up well to heat. It’s a fantastic middle-ground choice if you want something more unique than the basic black can but don’t want to spend on carbon fiber. It’s a reliable, no-surprises performer.
Best For
The practical Grom owner who wants a proven, functional slip-on without the premium price tag. It’s for someone who might pair this with the K&N filter mentioned above for a complete, budget-friendly intake/exhaust combo that makes a real difference in how the bike feels.
Pros and Cons
Pros:
- Very affordable for a quality slip-on
- Good, deep tone with dB killer removed
- Lightweight aluminum construction
- Includes necessary reducer sleeves for smaller pipes
Cons:
- Aluminum finish can scratch more easily than stainless or titanium
- Sound note is good but not as crisp as higher-priced options
- May require minor bending of mounting bracket for perfect fit on some Grom models
Customer Reviews
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Customer Review: Great sound for the money. Installation was straightforward. The dB killer does a good job of quieting it down for the street.
Complete Buying Guide for Best Exhaust for 2022 Honda Grom
Essential Factors We Consider
When choosing an exhaust for your Grom, fitment is king. These are universal slip-ons, so you must ensure the inlet diameter (usually 38mm/1.5″ on the Grom header) matches the muffler’s inlet or that you have the correct reducer/adapter. Overall length is critical—you don’t want a can that sticks out past the rear axle. Material matters: stainless steel is durable and affordable, titanium is ultralight and exotic, and carbon fiber is lightweight and looks amazing but can be fragile. Finally, consider the dB killer. A removable one gives you the most flexibility for quiet street use and louder track days.
Budget Planning
You can find a decent slip-on muffler for your Grom between $70 and $150. The K&N air filter (our #3 pick) is a separate but crucial $30-$40 upgrade. Factor in the potential cost of a 38mm to 51mm adapter sleeve ($10-$20) if it’s not included. Don’t forget that for maximum power gain with a new exhaust and filter, you may eventually need a fuel controller like a Power Commander to adjust the air/fuel ratio, which adds $150-$300 to the budget. Start with the slip-on and filter, then see how the bike runs.
Final Thoughts
Upgrading the exhaust on your 2022 Honda Grom is a simple, high-reward modification. Our top pick, the Sporacingrts muffler, offers the best blend of value, fit, and sound. If you want maximum style, the carbon fiber option is stunning. And never, ever skip the K&N air filter—it’s the unsung hero of small-engine performance. For more comprehensive upgrades on your Honda, you might also look into our guide on the best exhaust for a Honda Civic to see how performance principles scale across different models. Remember to check local noise and emissions laws before making your final choice, and most importantly, enjoy that newfound Grom rumble!
Frequently Asked Questions
Q: Will a universal slip-on exhaust fit my 2022 Honda Grom without welding?
A: Yes, most universal slip-ons will fit with the correct adapter sleeve. The Grom’s stock header pipe is 38mm (1.5″). You need a muffler with a 51mm (2″) inlet and a 38mm to 51mm reducer/adaptor. Many kits include this, but double-check the product description or ask the seller. Installation is typically bolt-on with basic hand tools.
Q: Do I need to rejet or tune my Grom after installing a slip-on exhaust?
A: For a slip-on alone, you usually do not need a tune. The change is minor enough that the stock ECU can compensate. However, if you add a high-flow air filter (like the K&N) at the same time, you are increasing airflow significantly and will likely run lean. A fuel controller is highly recommended for optimal performance and to prevent engine damage in the long run.
Q: Which is better: stainless steel, titanium, or carbon fiber exhaust?
A: It depends on your priority. Stainless steel is durable, affordable, and heavy. Titanium is the lightest and has a unique purple/blue heat tint, but it’s expensive. Carbon fiber is lightweight and looks racey, but it can be damaged by impacts and degrades over time from heat cycles. For a Grom on a budget, stainless steel is perfect. For a show bike, carbon fiber wins.
Q: How much louder will my Grom get with a slip-on?
A: With the dB killer installed, it will be slightly deeper but similar in volume to stock. Remove the dB killer, and it becomes significantly louder and more aggressive—typical of a small single-cylinder. Expect a sharp, “poppy” sound. Always check your local ordinances regarding motorcycle exhaust noise levels.
Q: Can I install an exhaust myself?
A: Absolutely. A slip-on installation is one of the easiest motorcycle mods. You typically need a socket wrench to remove the old muffler’s mounting bolts and clamp, then install the new one with the provided hardware. Have a friend help hold the bike steady. It takes 15-30 minutes. If you’re uncomfortable, any local motorcycle shop can do it quickly.
Upgrading your 2022 Honda Grom’s exhaust is the perfect way to add personality and a bit more pep to your tiny terror. Based on our testing, the Sporacingrts Universal Slip-On is the best all-around choice for its value and solid performance. Pair it with the K&N HA-1222 Air Filter for a complete, budget-friendly breathing upgrade that you’ll feel in the throttle response. If you want to turn heads, the carbon fiber option is worth the extra effort for its looks. Ready to make your Grom sound as fierce as it looks? Click the Check Price on Amazon buttons above to find the best current deals and get started on your build today!
