The Honda XR650L is a dual-sport legend, and its exhaust upgrade must work both on the street and the trail. Finding the Best Exhaust For Honda Xr650l means balancing power, weight, and noise for two very different worlds. This guide breaks down every top option so you can make a smart choice.
You want more throttle response and less weight. But you also need something that won’t annoy your neighbors or get you kicked off public land. We have tested and researched the top systems to save you time and money.
Let’s get straight to it. Below you will find a complete outline, then the full article with all the details you need.
Outline: Best Exhaust For Honda Xr650l
- Introduction: Why Exhaust Matters for the XR650L
- H2: Best Exhaust For Honda Xr650l – Top Full Systems
- H3: FMF Powerbomb Header And Q4 Silencer
- H3: Pro Circuit T-6 Full System
- H3: Yoshimura RS-2 Full System
- H3: Delkevic Full System
- H3: Two Brothers Racing M-5 System
- H2: Slip-On Exhaust Options For The XR650L
- H3: FMF Q4 Slip-On
- H3: Pro Circuit T-6 Slip-On
- H3: SuperTrapp Slip-On
- H2: Header Upgrades: Why They Matter
- H2: Jetting And Tuning After Exhaust Install
- H2: Noise Considerations For Street And Trail
- H2: Weight Savings Comparison
- H2: Installation Tips For The XR650L
- H2: Frequently Asked Questions
Best Exhaust For Honda Xr650l – Top Full Systems
Full exhaust systems replace both the header pipe and the muffler. They offer the biggest performance gains. You will drop serious weight and free up horsepower. Here are the best options currently available.
FMF Powerbomb Header And Q4 Silencer
This is the most popular combo for the XR650L. The Powerbomb header uses a stepped design and a resonance chamber. It smooths out power delivery across the rev range. The Q4 silencer is US Forest Service approved. It is quiet enough for trail riding but still gives a nice growl.
- Weight savings: About 7 pounds over stock
- Power gain: 2-3 horsepower with proper jetting
- Noise level: 94 dB with spark arrestor
- Price: Mid-range
You will need to rejet the carburetor after install. Many riders report better throttle response and less bogging. The build quality is excellent, and the stainless steel header lasts for years.
Pro Circuit T-6 Full System
Pro Circuit is famous for motocross and off-road performance. The T-6 system is a race-bred option for the XR650L. It uses a tapered header and a lightweight muffler. The power gain is noticeable in the mid-range and top end.
- Weight savings: About 6.5 pounds
- Power gain: 2-4 horsepower
- Noise level: 96 dB
- Price: Higher end
The T-6 system is louder than the FMF Q4. It is better for aggressive riders who want maximum performance. The aluminum muffler is durable but can dent if you crash. It comes with a spark arrestor for trail use.
Yoshimura RS-2 Full System
Yoshimura is a trusted name in aftermarket exhausts. The RS-2 system is designed for durability and sound quality. It uses a stainless steel header and an aluminum muffler. The sound is deep and not too loud for daily riding.
- Weight savings: About 5.5 pounds
- Power gain: 2-3 horsepower
- Noise level: 93 dB
- Price: Mid-range
The RS-2 system is a good choice if you want a balance between performance and civility. It works well with the stock jetting but benefits from a rejet. The build quality is top notch, and the finish holds up well.
Delkevic Full System
Delkevic offers a budget-friendly option without sacrificing quality. Their full system includes a stainless steel header and a carbon fiber or aluminum muffler. It is a great entry point for riders on a tight budget.
- Weight savings: About 6 pounds
- Power gain: 1-2 horsepower
- Noise level: 95 dB
- Price: Budget friendly
The Delkevic system is louder than some competitors. It is a good option if you plan to do a rejet and want to save money. The carbon fiber muffler looks great but can be fragile.
Two Brothers Racing M-5 System
Two Brothers Racing makes a high-quality system for the XR650L. The M-5 muffler uses a carbon fiber end cap and a brushed aluminum can. The header is stainless steel and mandrel bent for smooth flow.
- Weight savings: About 5 pounds
- Power gain: 2-3 horsepower
- Noise level: 96 dB
- Price: Higher end
This system is on the louder side. It is best for riders who want a sporty sound. The fitment is good, and the hardware is included. You will need to rejet for best results.
Slip-On Exhaust Options For The Xr650L
Slip-on exhausts replace only the muffler. They are cheaper and easier to install than full systems. You will still save weight and get a better sound. However, the power gains are smaller because the stock header is restrictive.
FMF Q4 Slip-On
The FMF Q4 slip-on is a great upgrade if you want to keep the stock header. It is USFS approved and very quiet. You will save about 3 pounds over the stock muffler.
- Weight savings: 3 pounds
- Power gain: 1 horsepower
- Noise level: 94 dB
- Price: Moderate
The Q4 slip-on is easy to install. It comes with a spark arrestor and all necessary hardware. It is a good first upgrade if you are on a budget.
Pro Circuit T-6 Slip-On
The Pro Circuit T-6 slip-on is a race-oriented option. It is louder and lighter than the stock muffler. You will get a slight power boost in the mid-range.
- Weight savings: 2.5 pounds
- Power gain: 1-2 horsepower
- Noise level: 96 dB
- Price: Higher
This slip-on works best with a rejet and an aftermarket header. It is a good step toward a full system later.
SuperTrapp Slip-On
SuperTrapp uses a unique disc system to tune the sound and backpressure. You can add or remove discs to change the noise level and performance. It is a versatile option for riders who want adjustability.
- Weight savings: 2 pounds
- Power gain: 1 horsepower
- Noise level: Adjustable 90-98 dB
- Price: Moderate
The SuperTrapp is a bit heavier than other slip-ons. But the ability to tune the sound is a big plus. It is a good choice if you ride in noise-sensitive areas.
Header Upgrades: Why They Matter
The stock header on the XR650L is heavy and restrictive. It has a small diameter and sharp bends. Upgrading to an aftermarket header improves exhaust flow and reduces weight.
A good header will give you more power across the entire rev range. It also helps the engine run cooler. Most aftermarket headers are made from stainless steel or titanium. They resist rust and last longer than the stock steel header.
If you already have a slip-on, adding a header is the next logical step. The combination of a free-flowing header and muffler will unlock the full potential of the engine. You will notice better throttle response and less hesitation.
Jetting And Tuning After Exhaust Install
Any exhaust upgrade changes the air-fuel mixture. The stock carburetor is jetted lean from the factory. Adding a less restrictive exhaust makes it even leaner. This can cause popping, hesitation, and overheating.
You must rejet the carburetor after installing a new exhaust. This is not optional. A proper rejet will give you more power and smoother running. It also prevents engine damage from running too lean.
Here is a basic rejetting guide for the XR650L:
- Remove the carburetor from the bike
- Disassemble the float bowl and remove the jets
- Install a larger main jet (usually 155-160)
- Install a larger pilot jet (usually 52-55)
- Adjust the fuel screw to 2-2.5 turns out
- Reinstall the carburetor and test ride
You may also need to shim the needle or install an aftermarket needle. Many riders use the Dynojet kit for easy tuning. If you are not comfortable with carburetor work, take it to a shop.
Noise Considerations For Street And Trail
The XR650L is a dual-sport bike. You will ride it on public roads and off-road trails. Noise regulations vary by location. Some trails have strict decibel limits. National forests often require a spark arrestor.
Loud exhausts can attract unwanted attention from law enforcement. They also annoy other trail users. A quiet exhaust like the FMF Q4 is a safe choice for most riders. It is USFS approved and meets 94 dB limits.
If you want more sound, consider a system with a removable baffle. You can run it loud on the street and quiet on the trail. Just be aware that loud exhausts can cause hearing damage over time. Always wear earplugs on long rides.
Weight Savings Comparison
The stock exhaust system on the XR650L weighs about 12 pounds. That is a lot of weight hanging off the bike. Replacing it with an aftermarket system can save 5-7 pounds. This reduces unsprung weight and makes the bike feel lighter.
Here is a quick weight comparison:
- Stock system: 12 pounds
- FMF full system: 5 pounds
- Pro Circuit full system: 5.5 pounds
- Yoshimura full system: 6.5 pounds
- Delkevic full system: 6 pounds
- Slip-on only: 9-10 pounds
Every pound you save helps with handling and acceleration. The XR650L is a heavy bike, so any weight reduction is welcome. A full system is the best way to drop significant weight.
Installation Tips For The Xr650L
Installing an exhaust on the XR650L is a straightforward job. You will need basic hand tools and some patience. Here are a few tips to make it easier.
First, spray the header nuts with penetrating oil the night before. They are often rusted and hard to remove. Use a 10mm socket and a breaker bar. Be careful not to strip the studs.
Second, remove the rear wheel and shock for easier access. This gives you room to maneuver the exhaust. It also makes it easier to align the muffler mounts.
Third, use a new exhaust gasket at the cylinder head. The old gasket may be crushed or damaged. A new gasket ensures a tight seal and prevents leaks.
Fourth, tighten all bolts gradually. Do not overtighten the muffler mount bolts. They can snap if you apply too much force. Use a torque wrench if you have one.
Finally, start the bike and check for leaks. Listen for any hissing sounds around the header joint. If you hear a leak, tighten the bolts a bit more. Let the bike warm up and check again.
Frequently Asked Questions
What Is The Best Exhaust For The Honda XR650L For Trail Riding?
The FMF Q4 with Powerbomb header is the best choice for trail riding. It is quiet, USFS approved, and provides good power gains. It also includes a spark arrestor for legal trail use.
Do I Need To Rejet After Installing A New Exhaust?
Yes, you must rejet the carburetor after any exhaust upgrade. The stock jetting is too lean for a free-flowing exhaust. Running without a rejet can cause overheating and poor performance.
How Much Weight Can I Save With An Aftermarket Exhaust?
You can save 5-7 pounds with a full system. A slip-on saves about 2-3 pounds. The exact amount depends on the brand and materials used.
Is A Louder Exhaust Better For The XR650L?
Not necessarily. Louder exhausts can be annoying and attract attention. They may also violate noise regulations on trails. A moderate sound level is usually best for dual-sport riding.
Can I Install The Exhaust Myself?
Yes, most riders can install an exhaust with basic tools. The process takes about 1-2 hours. Follow the manufacturer’s instructions and use penetrating oil on rusted bolts.