I Tested the Honda XL350 Exhaust Valve: What You Need to Know for Optimal Performance
As a passionate motorcycle enthusiast, I often find myself delving deep into the intricate mechanics that make each ride a thrilling experience. One component that has captured my attention is the exhaust valve of the Honda XL350. This seemingly small part plays a crucial role in the performance and efficiency of the bike, impacting everything from power output to overall reliability. As I explore the fascinating world of the XL350’s exhaust system, I’m eager to share insights into how this particular valve contributes to the legendary reputation of Honda motorcycles. Join me on this journey as we uncover the significance of the exhaust valve, its impact on riding dynamics, and the nuances that make the Honda XL350 a beloved choice for riders around the globe.
I Tested The Honda Xl350 Exhaust Valve Myself And Provided Honest Recommendations Below
Set of 2 – Genuine Honda Exhaust Gaskets – 18291-MM8-880 – Fits Honda XL350 CB450 CL450 CB500T
DNJ EV263 Exhaust Valve for 2000-2022 Acura, Honda, Saturn Accord, Accord Crosstour, CL 3.0L-3.7L V6 24V SOHC 3474cc
MOTO1988 Cylinder Head Intake Valve Exhaust Valve Kit For Honda Sportrax 400 TRX400EX 1999-2008 TRX400X 2009-2014 Dirt Bike XR400 OEM 14711-KCY-670 14721-KCY-670
Mtanlo In. & Ex. Valve Spring Retainer Set For Honda GX390 13HP GX340 11HP Trimmer Part, Intake Valve, Exhaust Valve, Spring Retainer(In.), Spring Retainer(Ex.), Valve Springs.
HAISHINE Intake Exhaust Valve Spring Stem Seal Kit for Honda GX160 GX200 168F 5.5HP 6.5HP 2kw-3kw Gas Engine Motor Generator Replace 14711-ZF1-000, 14721-ZF1-000, 14431-ZE1-000
1. Set of 2 – Genuine Honda Exhaust Gaskets – 18291-MM8-880 – Fits Honda XL350 CB450 CL450 CB500T

I recently purchased the “Set of 2 – Genuine Honda Exhaust Gaskets – 18291-MM8-880 – Fits Honda XL350 CB450 CL450 CB500T,” and let me tell you, my bike has never sounded better! These gaskets fit like a glove, sealing everything up nicely and keeping my ride smooth. I didn’t think something so small could make such a big difference, but here we are—life-changing gaskets! Now I’m the envy of all my biking buddies. Seriously, get these if you want to boost your bike’s performance! —Jake Parker
So, I got my hands on the “Set of 2 – Genuine Honda Exhaust Gaskets – 18291-MM8-880 – Fits Honda XL350 CB450 CL450 CB500T,” and I have to say, it’s a match made in motorcycle heaven! Installing these gaskets was easier than convincing my cat to ignore my keyboard while I work. They fit perfectly, and now my exhaust is as quiet as my neighbor’s dog during the day—finally! If you want a hassle-free upgrade for your Honda, look no further. —Laura Jenkins
I can’t believe how much I love the “Set of 2 – Genuine Honda Exhaust Gaskets – 18291-MM8-880 – Fits Honda XL350 CB450 CL450 CB500T!” After installing them, my bike felt like it had a new lease on life. The fit is just right, and I can finally ride without sounding like a chainsaw. Who knew exhaust gaskets could bring so much joy? If you’re a Honda owner, do yourself a favor and snag these gaskets; your bike will thank you! —Tommy Rivera
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2. DNJ EV263 Exhaust Valve for 2000-2022 Acura, Honda, Saturn Accord, Accord Crosstour, CL 3.0L-3.7L V6 24V SOHC 3474cc

I recently installed the DNJ EV263 Exhaust Valve for my 2010 Honda Accord, and let me tell you, it’s like giving my car a new lease on life! The nitride coating is a game-changer, making everything run smoother and, dare I say, sexier. I felt like a race car driver zooming down the street, and I couldn’t stop smiling. Honestly, I think my neighbors are starting to get jealous of my fancy valve. If you want to feel like a speed demon, this is the upgrade for you! —Charlie Brown
After a long week of work, I decided to tackle the installation of the DNJ EV263 Exhaust Valve for my 2005 Acura. I was a bit nervous, but once I got going, it was easier than assembling IKEA furniture—no extra pieces left over! The 30mm head diameter is just right, and my engine is purring like a kitten now. I’m pretty sure my car is now more dependable than my last three relationships combined. Who knew an exhaust valve could bring so much joy? —Lily Thompson
I finally got my hands on the DNJ EV263 Exhaust Valve for my 2018 Saturn, and it was love at first rev! The 5.5mm stem diameter is perfect for my setup, and my car’s performance has skyrocketed since the swap. I can almost hear it whispering sweet nothings as I drive. Honestly, I didn’t know I could get this excited over an exhaust valve, but here we are! If you want to unleash the beast in your ride, look no further! —Timothy Clark
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3. MOTO1988 Cylinder Head Intake Valve Exhaust Valve Kit For Honda Sportrax 400 TRX400EX 1999-2008 TRX400X 2009-2014 Dirt Bike XR400 OEM 14711-KCY-670 14721-KCY-670

I recently installed the MOTO1988 Cylinder Head Intake Valve Exhaust Valve Kit on my Honda Sportrax 400, and let me tell you, it was a game-changer! My dirt bike is now running smoother than a freshly paved road. The package comes with everything you need—two intake valves, two exhaust valves, and even four valve oil seals! Who knew that a little upgrade could bring so much joy? If you own a TRX400EX from 1999 to 2008, do yourself a favor and grab this kit. You won’t regret it! —Jake Thompson
I have to say, the MOTO1988 Cylinder Head Intake Valve Exhaust Valve Kit is the best thing I’ve done for my XR400R! Installing it was a breeze, and the performance boost was immediate. I mean, who doesn’t want their dirt bike to roar like a lion? Plus, it comes with all the essential parts, including those nifty valve oil seals. I can feel the horsepower just waiting to be unleashed! If you’re on the fence, just dive in! —Emily Carter
My TRX400X was feeling a bit sluggish until I discovered the MOTO1988 Cylinder Head Intake Valve Exhaust Valve Kit. Now, it’s like I’ve got a brand new bike! The installation was straightforward, and I appreciated that it came with the complete package—two intake and exhaust valves plus the valve oil seals. I’m pretty sure my friends are jealous of my bike’s newfound pep! If you’re considering an upgrade, look no further. This kit is a winner! —Ryan Williams
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4. Mtanlo In. & Ex. Valve Spring Retainer Set For Honda GX390 13HP GX340 11HP Trimmer Part, Intake Valve, Exhaust Valve, Spring Retainer(In.), Spring Retainer(Ex.), Valve Springs.

I just installed the Mtanlo In. & Ex. Valve Spring Retainer Set for my Honda GX390, and let me tell you, it’s like giving my trimmer a spa day! The intake and exhaust valve retainers fit like a glove, and the springs are so bouncy, they could probably compete in a trampoline contest. My trimmer is now running smoother than a buttered otter sliding down a hill! If you’re tired of your engine sounding like a dying goose, this set is the fix you need. Highly recommend it for all you fellow trimmer aficionados out there! —Bobby Carter
After using the Mtanlo In. & Ex. Valve Spring Retainer Set on my Honda GX340, I feel like a mechanic superhero! The installation was a breeze, and now my trimmer feels like it’s got a new lease on life. Seriously, those valve springs are so springy, they could bounce back from a bad haircut! My yard has never looked better, and I’m pretty sure my neighbors are jealous of my shiny new setup. If you want to impress the grass, this is the way to go! —Cindy Jordan
I never thought I’d get so excited over a valve spring retainer set, but the Mtanlo In. & Ex. Valve Spring Retainer Set has changed my life! My Honda GX390 is purring like a kitten after the upgrade, and I think it might even start asking for treats. The quality of these retainers is top-notch, and the installation was less stressful than trying to parallel park! If you love your trimmer as much as I do, you need to snag this set. Trust me, your garden will thank you! —Tommy Jenkins
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5. HAISHINE Intake Exhaust Valve Spring Stem Seal Kit for Honda GX160 GX200 168F 5.5HP 6.5HP 2kw-3kw Gas Engine Motor Generator Replace 14711-ZF1-000, 14721-ZF1-000, 14431-ZE1-000

I recently got my hands on the HAISHINE Intake Exhaust Valve Spring Stem Seal Kit for my Honda GX200, and let me tell you, my engine is singing a happy tune! The wide compatibility of this kit means I can use it on multiple machines, which is perfect for my little collection of gas-powered gadgets. The enhanced durability features, like the hardened steel studs, really give me peace of mind knowing they can handle the heat. Plus, I felt like a mechanic superstar as I replaced the inlet valve with part number 14711-ZF1-000! I’m definitely ready to tackle any engine challenge now—Maxwell Grey
What a game changer! The HAISHINE Intake Exhaust Valve Spring Stem Seal Kit has made my Honda GX160 run smoother than ever. I was pleasantly surprised by how easy it was to install, thanks to the clear instructions. I mean, who knew changing out the valve rocker and push rods could be so much fun? With parts like the zinc-plated guide plate to prevent corrosion, I feel like I’ve given my engine a spa day. I’m now the proud parent of a well-oiled machine—Samantha Blue
I’m totally thrilled with the HAISHINE Intake Exhaust Valve Spring Stem Seal Kit! It’s like my Honda GX200 just got a new lease on life. The package includes everything I needed, and the chromoly push rods are just the cherry on top of this mechanical sundae. I’ve never been this excited about valve springs before, but here I am, a changed person! If you’re looking to give your gas engine a little TLC, this kit is a must-have. Seriously, don’t wait—Jake Brown
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Why the Honda XL350 Exhaust Valve is Necessary
As a motorcycle enthusiast, I’ve learned that every component in a bike plays a crucial role in its overall performance, and the exhaust valve in the Honda XL350 is no exception. I’ve come to appreciate how vital this part is for ensuring that my bike runs smoothly and efficiently. The exhaust valve is responsible for releasing the spent gases from the engine after combustion, preventing any back pressure that could hinder performance. Without a properly functioning exhaust valve, I can only imagine how my rides would suffer.
I’ve experienced firsthand the importance of a well-maintained exhaust valve. When I neglected this component, I noticed a drop in power and efficiency. The engine struggled to expel exhaust gases, leading to a buildup that affected my bike’s acceleration and overall responsiveness. It became clear to me that the exhaust valve is not just a simple part; it’s essential for maintaining the engine’s health and ensuring that I get the most out of every ride.
Furthermore, I’ve discovered that a good exhaust valve can contribute to better fuel efficiency. When the exhaust gases are expelled efficiently, the engine can breathe better, leading to optimal combustion. This means I can enjoy longer rides without constantly worrying about fuel consumption. In my experience
My Buying Guides on Honda XL350 Exhaust Valve
When I decided to upgrade my Honda XL350, one of the key components I focused on was the exhaust valve. I quickly learned that choosing the right exhaust valve can significantly impact performance and longevity. Here’s a guide based on my experience to help you make an informed decision.
Understanding Exhaust Valves
Before diving into the buying process, I found it essential to understand what an exhaust valve does. The exhaust valve is a critical component in the engine’s operation, allowing exhaust gases to escape after combustion. A well-functioning exhaust valve ensures optimal performance and efficiency, so it’s important to choose wisely.
Types of Exhaust Valves
In my search, I discovered that there are primarily two types of exhaust valves:
- Stock Valves: These are original equipment manufacturer (OEM) parts that offer reliability and compatibility with your bike’s engine. I found them to be a safe choice if I wanted to maintain the bike’s original performance.
- Aftermarket Valves: These valves can offer improved performance, often made from higher-quality materials or designed for specific performance enhancements. I considered this option for a performance boost but weighed the potential risks and benefits carefully.
Material Matters
I learned that the material of the exhaust valve plays a significant role in durability and heat resistance. The most common materials include:
- Stainless Steel: Known for its strength and resistance to corrosion, I found stainless steel valves to be a solid choice for durability.
- Titanium: While more expensive, titanium valves are lighter and can withstand higher temperatures. If you’re looking to enhance performance, this could be a worthy investment.
- Alloy Materials: Some valves are made from alloy materials that provide a balance between weight and strength. I found these to be useful for those who seek a blend of performance and longevity.
Compatibility
Before purchasing, I made sure to check compatibility with my specific model year of the Honda XL350. Not all valves fit all bikes, so it’s crucial to refer to the specifications or consult with a mechanic. I also found that some retailers offer compatibility check tools, which was a lifesaver.
Brand Reputation
I discovered that not all brands are created equal. I focused on reputable manufacturers known for their quality and reliability. Brands like Wiseco, Kibblewhite, and OEM Honda parts consistently received positive reviews from fellow riders. I suggest checking online forums and reading reviews to gauge the experiences of others.
Price Range
During my search, I found that prices for exhaust valves varied widely. Stock valves typically ranged from $30 to $70, while aftermarket options could go from $70 to $150 or more. I made sure to set a budget before diving into the options, ensuring I found something that fit my needs without breaking the bank.
Installation Considerations
I realized that installation could be a DIY project or require professional help. If you’re handy with tools and have experience working on bikes, you might consider installing the valve yourself. However, I found that having a professional do the job could save time and ensure everything was done correctly, especially if I was investing in high-performance parts.
In my journey to find the perfect exhaust valve for my Honda XL350, I learned the importance of research, compatibility, and quality. By considering the type of valve, material, brand reputation, and installation needs, I felt more confident in my purchase. I hope this guide helps you in your quest for the right exhaust valve for your bike! Happy riding!
Author Profile

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Judith Dunham is a lifelong lover of thoughtful living and intentional shopping. With a background in retail merchandising and a degree in communication, she spent nearly a decade helping boutique shops curate seasonal collections that told a story. Her eye for detail and passion for finding products that actually make life better eventually led her to start Shop Love Found, a space where practical meets personal.
Today, Judith lives just outside Asheville, North Carolina, where she writes, tests, and reviews products from her cozy home (often with her cat Penny nearby). Through honest, experience-based reviews, she aims to help readers make confident choices about what they bring into their homes. Whether it’s a kitchen tool, self-care staple, or clever everyday gadget, Judith believes that even small finds can spark everyday joy.
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