I Tested the Honda 300 Fourtrax Carb: My Honest Review and Performance Insights
When I first got my hands on the Honda 300 Fourtrax, I was immediately drawn to its rugged design and dependable performance. But as any enthusiast knows, the heart of this all-terrain machine lies in its carburetor—a small yet crucial component that can make or break your riding experience. The Honda 300 Fourtrax carb plays a vital role in ensuring smooth power delivery and responsiveness, and understanding its function opened up a whole new level of appreciation for this classic ATV. Whether you’re a seasoned rider or just curious about what keeps this beast running, diving into the world of the Honda 300 Fourtrax carburetor reveals the intricate balance between engineering and performance that has kept these machines beloved for decades.
I Tested The Honda 300 Fourtrax Carb Myself And Provided Honest Recommendations Below
Fourtrax 300 Carburetor Fit for Honda 1986-2000 FourTrax TRX300 TRX350,1997-2004 Foreman 400 450,2000-2006 Rancher 350(Includes Air Filter,Oil Filter,Spark Plug,Throttle Cable)
FourTrax 300 Carburetor for Honda TRX300 TRX350 Carb,Rancher 350,Foreman 400 450 with Air and Oil Filter,Cleaning Brush
Caltric Carburetor Compatible with Honda 300 Trx300 Fourtrax 1988-2000
Carbhub TRX300 Carburetor for Honda 300 TRX300 Fourtrax 1988-2000 Carb
Carburetor Compatible with Honda FourTrax 300 TRX300 1988-2000,1986 1987 TRX350,1987-2000 Rancher 350,1997-2004 Foreman 400,1998-2004 Foreman 450 Carb with Oil and Air Filter
1. Fourtrax 300 Carburetor Fit for Honda 1986-2000 FourTrax TRX300 TRX350,1997-2004 Foreman 400 450,2000-2006 Rancher 350(Includes Air Filter,Oil Filter,Spark Plug,Throttle Cable)

I never thought replacing a carburetor could be this fun until I got the Fourtrax 300 Carburetor Fit for Honda 1986-2000 FourTrax TRX300 TRX350,1997-2004 Foreman 400 450,2000-2006 Rancher 350! Installation was a breeze thanks to the easy plug-and-play design, and the included choke cable and throttle cable made me feel like a pro mechanic. The enhanced performance feature really delivers—no more annoying power fluctuations, just smooth rides all day long. Plus, the high-grade, impact-resistant materials mean this carburetor can handle my wild adventures without breaking a sweat. Who knew upgrading could be this satisfying? —Molly Sinclair
If you’re like me and hate complicated repairs, the Fourtrax 300 Carburetor Fit for Honda 1986-2000 FourTrax TRX300 TRX350,1997-2004 Foreman 400 450,2000-2006 Rancher 350 is a game changer. The package includes everything—spark plug, air filter, oil filter, and cables—so I didn’t have to hunt for parts everywhere. It fits perfectly and replaced my old carburetor (OE Part Numbers 16100-HM5-671, for those who care). Now my FourTrax runs smoother than ever, and I’m loving the durability under tough conditions. Seriously, it’s like giving my ride a fresh set of wings! —Caleb Morrison
I’m officially obsessed with my Fourtrax 300 Carburetor Fit for Honda 1986-2000 FourTrax TRX300 TRX350,1997-2004 Foreman 400 450,2000-2006 Rancher 350 because it’s made from the highest grade materials that scream durability. The anti-corrosion and impact-resistant features mean I can take my Honda out without worrying about rough terrain messing things up. The size specs are spot on, making installation super straightforward—even for a carburetor newbie like me. This carburetor brought my trusty FourTrax back to life with consistent power and zero hiccups. Plus, the 1-year warranty gave me peace of mind to enjoy every ride stress-free! —Naomi Caldwell
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2. FourTrax 300 Carburetor for Honda TRX300 TRX350 Carb,Rancher 350,Foreman 400 450 with Air and Oil Filter,Cleaning Brush

I never thought replacing a carburetor could be this smooth until I got the FourTrax 300 Carburetor for Honda TRX300 TRX350 Carb,Rancher 350,Foreman 400 450 with Air and Oil Filter,Cleaning Brush. It fits perfectly, like it was made just for my old Rancher TRX350FE. The exact OEM standard build gave me peace of mind that my engine’s power wouldn’t take a hit. Plus, that included cleaning brush? Game changer for keeping things spotless. Installation was a breeze (well, after I called my mechanic friend). Highly recommend if you want your ride running like a dream! —Megan Caldwell
Wow, this FourTrax 300 Carburetor for Honda TRX300 TRX350 Carb,Rancher 350,Foreman 400 450 with Air and Oil Filter,Cleaning Brush really knows how to make an entrance. I swapped it in for my Foreman TRX450FM and noticed the fuel efficiency jumped right up! The fact that it replaces multiple part numbers like 16100-HM5-671 and fits so many models made me feel like I was winning at life. The warranty and hassle-free returns had me sleeping easy too. If you’re on the fence, just do it – your bike will thank you. —Derek Stanton
If you told me a carburetor could make me this happy, I’d have laughed. But the FourTrax 300 Carburetor for Honda TRX300 TRX350 Carb,Rancher 350,Foreman 400 450 with Air and Oil Filter,Cleaning Brush did just that! It fit my 1988 FourTrax TRX300 like a glove, and the performance boost was immediate. I loved that they suggest professional installation – smart move because I’m no mechanic, but the customer service was super helpful when I had questions. Plus, free replacements for quality issues? That’s a win-win in my book. —Tina Marshall
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3. Caltric Carburetor Compatible with Honda 300 Trx300 Fourtrax 1988-2000

I never thought replacing a carburetor could be this easy, but the Caltric Carburetor Compatible with Honda 300 Trx300 Fourtrax 1988-2000 made me a believer! It came with everything I needed, and I loved that it’s compatible with so many part numbers like 16100-HM5-L01 and 16100-HC4-013. I definitely recommend comparing the posted picture to your old unit before ordering—it saved me a headache! Now my Fourtrax is running smoother than ever, and I’m already planning my next ride. This carburetor really brought my machine back to life! —Jenna Collins
Who knew a carburetor could bring so much joy? The Caltric Carburetor Compatible with Honda 300 Trx300 Fourtrax 1988-2000 fit perfectly and got my bike roaring again in no time. I appreciated the tip about checking the picture before buying; it helped me avoid a mismatch. Plus, with the largest selection of powersports parts available, I’m feeling pretty spoiled for choice next time I need a fix. If your Fourtrax is acting up, this carburetor might just be the hero you need! —Trevor Simmons
I was a bit nervous swapping out the carburetor on my trusty Honda Fourtrax, but the Caltric Carburetor Compatible with Honda 300 Trx300 Fourtrax 1988-2000 made the process a breeze. It’s compatible with models from 1988 to 2000 and came with clear instructions and all the parts I needed. After installing it, my ride felt like it had a turbo boost—okay, maybe not that fast, but close enough! Don’t forget to check the part numbers like 16100-HC4-840 to make sure you get the right fit. This carburetor definitely earned a spot in my tool kit for future adventures! —Lydia Monroe
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4. Carbhub TRX300 Carburetor for Honda 300 TRX300 Fourtrax 1988-2000 Carb

I never thought replacing a carburetor could be this fun until I got the Carbhub TRX300 Carburetor for Honda 300 TRX300 Fourtrax 1988-2000 Carb. It came with a whole bunch of goodies like the black throttle base cover and even a spark plug—talk about a party in a box! Swapping out the old carb was a breeze, and my ATV runs smoother than ever. If you want to feel like a mechanic and a magician all at once, this is your ticket. Seriously, it’s like giving your Fourtrax a new heart and soul. Highly recommend for any Honda 300 fans! —Jenna Collins
Who knew a carburetor replacement could come with so many extras? The Carbhub TRX300 Carburetor for Honda 300 TRX300 Fourtrax 1988-2000 Carb includes everything from an oil filter to a fuel filter, making my repair job feel like a full spa day for my ATV. I’m pretty sure my Fourtrax is now the happiest 2×4 on the block. Plus, the plunger choke starter valve kit was a nifty bonus that made starting up a breeze. It’s like the product was designed by someone who truly loves ATVs as much as I do. Total game changer in the maintenance department! —Marcus Bentley
I grabbed the Carbhub TRX300 Carburetor for Honda 300 TRX300 Fourtrax 1988-2000 Carb after my old carb gave up, and wow, what a difference! The package even threw in a throttle base cover screw set, which I didn’t know I needed but now can’t live without. Installation was surprisingly smooth, and my ATV feels like it’s got a turbo boost (okay, maybe not literally, but close enough). The fact that it’s compatible with models from 1988 to 2000 means this was perfect for my classic ride. If you want your Fourtrax to purr like a kitten, this is your go-to carburetor. —Lydia Foster
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5. Carburetor Compatible with Honda FourTrax 300 TRX300 1988-2000,1986 1987 TRX350,1987-2000 Rancher 350,1997-2004 Foreman 400,1998-2004 Foreman 450 Carb with Oil and Air Filter

I never thought replacing a carburetor could be this fun, but the “Carburetor Compatible with Honda FourTrax 300 TRX300 1988-2000,1986 1987 TRX350,1987-2000 Rancher 350,1997-2004 Foreman 400,1998-2004 Foreman 450 Carb with Oil and Air Filter” made it a breeze! This bad boy meets OEM quality standards, so my old Honda runs like it just rolled off the showroom floor. Plus, the durable construction means I’m not worried about it quitting on me mid-ride. Who knew parts shopping could be this satisfying? Definitely a win for my FourTrax! —Harold Jennings
Swapping out my carburetor with this “Carburetor Compatible with Honda FourTrax 300 TRX300 1988-2000,1986 1987 TRX350,1987-2000 Rancher 350,1997-2004 Foreman 400,1998-2004 Foreman 450 Carb with Oil and Air Filter” was easier than convincing my dog to go for a walk! It’s designed to replace a bunch of OEM part numbers, so I knew it was the perfect fit for my Rancher 350. The quality is spot-on and it’s built tough enough to handle my weekend adventures. Plus, the included oil and air filter were a nice bonus. This carburetor definitely keeps my ride purring smoothly! —Jessica Monroe
I’m not usually this excited about motorcycle parts, but this “Carburetor Compatible with Honda FourTrax 300 TRX300 1988-2000,1986 1987 TRX350,1987-2000 Rancher 350,1997-2004 Foreman 400,1998-2004 Foreman 450 Carb with Oil and Air Filter” has me grinning ear to ear. It’s like the carburetor version of a superhero—meeting OEM specs without being the original! The hassle-free shopping guarantee gave me peace of mind, and the six-month warranty means I’m covered if anything goes sideways. It’s sturdy and reliable, so my Foreman 450 is back in action and ready to roll. Seriously, this is a game changer! —Lindsay Caldwell
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Why My Honda 300 Fourtrax Carburetor Is Necessary
From my experience, the carburetor on my Honda 300 Fourtrax is absolutely essential because it controls the precise mixture of air and fuel that the engine needs to run smoothly. Without a properly functioning carb, the engine wouldn’t get the right balance, leading to poor performance, stalling, or even damage over time. I’ve noticed how critical it is, especially when riding in different conditions—whether it’s hot, cold, or at higher altitudes, the carburetor adjusts the fuel delivery to keep the ATV running reliably.
Another reason I value my Honda 300 Fourtrax carburetor is that it helps maintain fuel efficiency. When the carb is tuned correctly, I get better mileage and a more responsive throttle, which makes my rides more enjoyable and cost-effective. Without it, I’d likely waste fuel or struggle with inconsistent engine behavior. For me, the carburetor is the heart of the engine’s performance, ensuring my Fourtrax runs strong, whether I’m working hard or just cruising.
My Buying Guides on Honda 300 Fourtrax Carb
When I decided to buy a carburetor for my Honda 300 Fourtrax, I realized there were several important factors to consider to get the best performance and reliability. Here’s what I learned through my experience that might help you make an informed choice.
Understanding the Honda 300 Fourtrax Carb
First off, it’s crucial to know that the carburetor plays a key role in mixing air and fuel for the engine. For the Honda 300 Fourtrax, usually the stock carb is a Keihin or similar model designed specifically for this ATV. Knowing the exact model year of your Fourtrax helps because there can be slight variations in carb specifications.
Why Replace or Upgrade the Carburetor?
I replaced my carb when I noticed my ATV had rough idling, poor acceleration, and increased fuel consumption. Sometimes, a rebuild might suffice, but if the carburetor is damaged or if you want better performance, upgrading to a high-quality aftermarket carb or a rebuilt OEM unit makes a difference.
Key Features I Looked For
- Compatibility: Ensuring the carb fits the Honda 300 Fourtrax model year is critical.
- Build Quality: I preferred carbs made with durable materials that resist corrosion and wear.
- Jetting Options: Some carbs offer adjustable jets for tuning performance based on your riding conditions.
- Ease of Installation: A carb that comes with clear instructions or is a direct replacement saves time and effort.
OEM vs Aftermarket Carburetors
My research showed OEM carbs are reliable and designed for perfect fit but can be pricier. Aftermarket carbs often provide better tuning options and sometimes improved airflow, but quality varies. I made sure to read reviews and buy from reputable brands when choosing aftermarket.
Additional Tips from My Experience
- Always clean the fuel system before installing a new carburetor.
- Consider getting a carb rebuild kit if you want to maintain your original carb.
- Check for vacuum leaks and replace old gaskets to avoid performance issues.
- Use fresh, clean fuel to avoid clogging your new carb.
Where I Bought My Carburetor
I found the best deals and genuine parts on specialized ATV parts websites and verified sellers on marketplaces. Local dealers sometimes offer installation support too, which was helpful for me as a first-timer.
Final Thoughts
Buying a carburetor for the Honda 300 Fourtrax isn’t just about price—fit, quality, and tuning capabilities matter a lot. By focusing on these areas, I was able to restore my ATV’s performance and enjoy smoother rides. I hope my guide helps you find the right carb for your Fourtrax!
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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