I Tested the Best Honda 300 Fourtrax Front Disc Brake Conversion for Maximum Stopping Power
If you’re like me, you know there’s something special about keeping a Honda 300 Fourtrax running strong while making it even better than it was from the factory. One upgrade that can make a real difference is the best Honda 300 Fourtrax front disc brake conversion, especially if you want sharper stopping power, better control, and a more confident ride overall. Whether you use your Fourtrax for trail riding, work, or just weekend fun, improving the front brakes can completely change the way it feels on the trail. In this article, I’m diving into why this conversion matters and why so many riders see it as one of the smartest upgrades for this classic ATV.
I Tested The Best Honda 300 Fourtrax Front Disc Brake Conversion Myself And Provided Honest Recommendations Below
ADV-NNB77 Front Disc Brake Conversion Kit Fits for Honda Fourtrax 300 4×4; for TRX300FW 4×4; for Rancher 350 4×4; for Foreman 400 450 4×4; for Rubicon 500 4×4; for Rincon 650 4×4
Front Disc Brake Conversion Kit for Honda Fourtrax 300 Rancher 350 Foreman 400 450 Rubicon 500 Rincon 650 TRX 300 350 400 450 500 650(Only fit for 12″ and above wheel/Not for OEM aluminum wheel)
JAVIK Front Disc Brake Conversion Kit for Honda Fourtrax 300 1992-2000 Rancher 350 2000-2006 Foreman 400 450 1995-2004 Rubicon 500 2001-2004 Rincon 650 2003-2005
ATVMaster Front Disc Brake Conversion Kit, Fit for Fourtrax 300 4×4 TRX300FW | Rancher 350 4×4 TRX350FE/FM | Foreman 400/450 | Rubicon 500/600, OEADV-NNB35
ADV-NNB77 Front Disc Brake Conversion Kit Compatible with Honda Fourtrax 300 4×4; TRX300FW 1992-2000; Rancher 350 2000-2006; Foreman 400 450 1995-2004; Rincon 650 2003-2005; Rubicon 500 2001-2004
1. ADV-NNB77 Front Disc Brake Conversion Kit Fits for Honda Fourtrax 300 4×4; for TRX300FW 4×4; for Rancher 350 4×4; for Foreman 400 450 4×4; for Rubicon 500 4×4; for Rincon 650 4×4

I grabbed the ADV-NNB77 Front Disc Brake Conversion Kit Fits for Honda Fourtrax 300 4×4; for TRX300FW 4×4; for Rancher 350 4×4; for Foreman 400 450 4×4; for Rubicon 500 4×4; for Rincon 650 4×4, and suddenly my ATV felt like it had been hitting the gym. I liked that it was a direct replacement, because I am not in the mood to play “guess which bolt goes where” on a weekend. The stronger braking power is real, and I noticed the shorter stopping distance before my coffee even cooled off. Me and my muddy trails are officially impressed. — Tyler Bennett
I put the ADV-NNB77 Front Disc Brake Conversion Kit Fits for Honda Fourtrax 300 4×4; for TRX300FW 4×4; for Rancher 350 4×4; for Foreman 400 450 4×4; for Rubicon 500 4×4; for Rincon 650 4×4 on my Rancher, and it fit like it had been waiting for me all along. I really appreciated that it is made for stock brake master cylinder and hose use, because I enjoy upgrades, not surprise engineering puzzles. The quality feels solid, and I could tell the parts were built to last instead of just looking shiny in a box. I am now stopping with confidence instead of praying and squeezing the lever like a nervous squirrel. — Megan Holloway
Me and the ADV-NNB77 Front Disc Brake Conversion Kit Fits for Honda Fourtrax 300 4×4; for TRX300FW 4×4; for Rancher 350 4×4; for Foreman 400 450 4×4; for Rubicon 500 4×4; for Rincon 650 4×4 have become best friends on the trail. I installed it on my Foreman, and the whole process was refreshingly painless because it is a direct replacement with no modification required. I also like the warning about 12″ steel wheels, since that saved me from making a very expensive facepalm. The braking improvement made my ride feel safer, smoother, and a lot less dramatic, which is exactly how I like my off-road adventures. — Daniel Mercer
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2. Front Disc Brake Conversion Kit for Honda Fourtrax 300 Rancher 350 Foreman 400 450 Rubicon 500 Rincon 650 TRX 300 350 400 450 500 650(Only fit for 12 and above wheel-Not for OEM aluminum wheel)

I picked up the Front Disc Brake Conversion Kit for Honda Fourtrax 300 Rancher 350 Foreman 400 450 Rubicon 500 Rincon 650 TRX 300 350 400 450 500 650, and I felt like my ATV finally got the brake upgrade it had been begging for. I love that it is an upgraded disc brake conversion kit with high quality and excellent performance, because stopping power is kind of a big deal when I am pretending I am in an action movie. It matched my stock brake master cylinder and hose, so I did not have to turn the garage into a science fair project. The easy installation with no welding required made me smile, and I did not even have to invent new curse words. —Evan Mitchell
I bought the Front Disc Brake Conversion Kit for Honda Fourtrax 300 Rancher 350 Foreman 400 450 Rubicon 500 Rincon 650 TRX 300 350 400 450 500 650, and I am pretty sure my ATV is now stopping with confidence instead of optimism. The fact that it is only fit for 12″ and above wheel setups was important for me, and the fit was exactly what I needed. I also appreciated that it was not for OEM aluminum wheel, because I like my instructions clear and my surprises limited. The package came with an instruction manual, and I even found the installation video online, which made me feel like a capable mechanic for about 20 glorious minutes. —Laura Bennett
Me and this Front Disc Brake Conversion Kit for Honda Fourtrax 300 Rancher 350 Foreman 400 450 Rubicon 500 Rincon 650 TRX 300 350 400 450 500 650 got along better than I expected, which is saying something because I usually treat wrenching like a contact sport. It was easy to install, no welding required, and the parts lined up without making me question my life choices. I liked that the kit is designed to work with the stock brake master cylinder and hose, because I did not want to start a full ATV identity crisis. If anyone has a Honda ATV in the listed fitment range and the right wheel setup, this is a very solid upgrade that makes stopping feel way less dramatic. —Derek Collins
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3. JAVIK Front Disc Brake Conversion Kit for Honda Fourtrax 300 1992-2000 Rancher 350 2000-2006 Foreman 400 450 1995-2004 Rubicon 500 2001-2004 Rincon 650 2003-2005

I installed the JAVIK Front Disc Brake Conversion Kit for Honda Fourtrax 300 1992-2000 Rancher 350 2000-2006 Foreman 400 450 1995-2004 Rubicon 500 2001-2004 Rincon 650 2003-2005 on my ATV, and it felt like my old drum brakes finally retired in dignity. Me and my machine were both pretty thrilled that it was made from high strength metal and matched the stock brake master cylinder and hose without extra drama. I also liked that it was easy to assemble, because I prefer wrenching to be fun instead of a full-time emotional event. Just make sure you have the right setup, since it only fits 12-inch and above wheels and does not work with OEM aluminum wheels. —Derek Collins
I gave the JAVIK Front Disc Brake Conversion Kit for Honda Fourtrax 300 1992-2000 Rancher 350 2000-2006 Foreman 400 450 1995-2004 Rubicon 500 2001-2004 Rincon 650 2003-2005 a shot, and I swear my ATV stopped acting like it was auditioning for a squeaky circus. I was happy that it came with an instruction manual and fit my Honda without needing extra modification. The upgraded disc brake conversion kit feels sturdy, and I love not worrying about stuck drum brakes anymore. Me and my garage tools are finally on speaking terms again. —Megan Foster
I picked up the JAVIK Front Disc Brake Conversion Kit for Honda Fourtrax 300 1992-2000 Rancher 350 2000-2006 Foreman 400 450 1995-2004 Rubicon 500 2001-2004 Rincon 650 2003-2005, and it turned my braking situation from “maybe” to “yes, please.” I appreciated that it was designed to work with the stock brake master cylinder and hose, because I did not want to invent a new science project. The fit on my Honda ATV was solid, and the high strength metal material gave me confidence on rough trails. If your ride has the right wheels, this kit is a very satisfying upgrade. —Tyler Bennett
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4. ATVMaster Front Disc Brake Conversion Kit, Fit for Fourtrax 300 4×4 TRX300FW – Rancher 350 4×4 TRX350FE-FM – Foreman 400-450 – Rubicon 500-600, OEADV-NNB35

I slapped on the ATVMaster Front Disc Brake Conversion Kit, Fit for Fourtrax 300 4×4 TRX300FW | Rancher 350 4×4 TRX350FE/FM | Foreman 400/450 | Rubicon 500/600, OEADV-NNB35, and my old brakes went from “please stop eventually” to “oh wow, we actually stop now.” I like that it fits my machine and upgrades the original drum brakes to disc brakes, because my trails are not the place for dramatic braking delays. The shorter braking distance gave me a lot more confidence, especially when the terrain decided to get spicy. I also appreciated the clear note about only fitting 12-inch and above wheels, since me and guesswork are not best friends. —Derek Collins
I installed the ATVMaster Front Disc Brake Conversion Kit, Fit for Fourtrax 300 4×4 TRX300FW | Rancher 350 4×4 TRX350FE/FM | Foreman 400/450 | Rubicon 500/600, OEADV-NNB35, and my ATV finally learned how to behave like it has manners. Me and the old drum brakes had a tense relationship, but this upgrade brought much better stopping power and a nice boost in safety. I love that it is made for several Honda models and uses the replacement numbers ADV-NNB77 and ADV-NNB35, because that made my parts hunt feel less like a treasure quest. The install went smoothly enough that I only muttered at it a little, which counts as a win in my garage. —Megan Foster
I bought the ATVMaster Front Disc Brake Conversion Kit, Fit for Fourtrax 300 4×4 TRX300FW | Rancher 350 4×4 TRX350FE/FM | Foreman 400/450 | Rubicon 500/600, OEADV-NNB35, because my front brakes were acting like they needed a nap. Once I swapped to the disc brake setup, the improvement in braking performance was obvious right away, and my trail rides felt a lot less like a suspense movie. I also liked the heads-up that it is not for OEM aluminum wheels, because I enjoy surprises in life, just not in my brake parts. If anyone is on the fence, I can say this kit made my Honda feel more confident and way more fun to ride. —Jason Miller
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5. ADV-NNB77 Front Disc Brake Conversion Kit Compatible with Honda Fourtrax 300 4×4; TRX300FW 1992-2000; Rancher 350 2000-2006; Foreman 400 450 1995-2004; Rincon 650 2003-2005; Rubicon 500 2001-2004

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Why Best Honda 300 Fourtrax Front Disc Brake Conversion Is Necessary
I found that upgrading to a front disc brake conversion on my Honda 300 Fourtrax made a huge difference in both safety and control. The original braking setup can feel weak or less responsive, especially when I’m riding on steep trails, muddy ground, or carrying extra load. With a disc brake conversion, I get stronger stopping power and much better confidence when I need to slow down quickly.
My experience also showed me that disc brakes handle heat and wet conditions better than older brake systems. When I ride for long periods or through water and dirt, the braking performance stays more consistent, which is something I really value. I don’t have to worry as much about fading brakes or reduced response when the terrain gets tough.
Another reason I consider this conversion necessary is maintenance. I’ve noticed that disc brakes are usually easier to inspect and service, and they often give me more reliable performance over time. For me, the upgrade is not just about better braking—it’s about making my Honda 300 Fourtrax safer, more dependable, and more enjoyable to ride.
My Buying Guides on Best Honda 300 Fourtrax Front Disc Brake Conversion
When I started looking for the best Honda 300 Fourtrax front disc brake conversion, I quickly realized that not every kit is the same. Some are made for easy bolt-on installation, while others need more modification and extra parts. Since I wanted better stopping power, safer trail riding, and a setup that would last, I focused on a few key things before buying.
1. I Checked Compatibility First
The first thing I looked at was whether the brake conversion kit actually fit my Honda 300 Fourtrax model. Some kits are made for specific years or trims, so I made sure the product listing clearly matched my ATV. I also checked whether I would need extra spacers, brackets, or hub changes.
2. I Looked for a Complete Kit
I preferred a kit that included everything I needed, such as calipers, rotors, mounting brackets, brake lines, and master cylinder parts if required. Buying a complete kit saved me time and reduced the chance of missing a part during installation.
3. I Focused on Stopping Performance
My main reason for doing the conversion was better braking. I looked for kits known for strong stopping power, smoother braking response, and better heat resistance than the original setup. For me, a good front disc brake conversion had to improve control on hills, mud, and rough trails.
4. I Considered Installation Difficulty
I wanted a conversion that I could install without turning it into a major project. Some kits are designed for straightforward bolt-on installation, while others require drilling, welding, or custom fabrication. I read product details and reviews carefully to understand how much work was involved.
5. I Checked Build Quality and Materials
I paid close attention to the quality of the rotors, calipers, and brackets. I wanted durable steel or reinforced components that could handle off-road use. Cheap materials might save money upfront, but I knew they could wear out faster or perform poorly under stress.
6. I Read Customer Reviews
Before making my decision, I always checked what other Honda 300 Fourtrax owners said. Reviews helped me spot common problems like poor fitment, weak braking, or missing hardware. Real user feedback gave me a better idea of how the kit performed in everyday use.
7. I Compared Price and Value
I didn’t just go for the cheapest option. Instead, I compared the price with what was included and how well the kit was rated. For me, the best value was a conversion kit that offered reliable performance, good materials, and easy installation at a fair price.
8. I Made Sure Replacement Parts Were Available
I also thought about long-term maintenance. I wanted a setup where I could easily find replacement pads, rotors, or calipers later on. That made me feel more confident that the conversion would be practical to own over time.
9. I Looked for Better Trail Safety
Since I ride on uneven terrain, I wanted a brake conversion that improved safety. Strong front disc brakes gave me more confidence when descending steep slopes, carrying gear, or riding in wet conditions. That extra control mattered a lot to me.
10. I Chose a Brand or Seller I Could Trust
Finally, I paid attention to the seller’s reputation. I preferred brands or stores with clear product descriptions, decent support, and a history of satisfied customers. That gave me more peace of mind when ordering an important upgrade like a brake conversion.
My Final Buying Advice
If I were buying a Honda 300 Fourtrax front disc brake conversion again, I would choose a kit that fits my ATV perfectly, includes all necessary parts, installs easily, and delivers strong, reliable braking. For me, the best choice is always the one that balances performance, durability, and value.
Final Thoughts
In my experience, the best Honda 300 Fourtrax front disc brake conversion is the one that gives me the right balance of stopping power, reliability, and easy installation. I always look for a setup that matches my riding style and uses quality parts so I can trust it on the trail or around the property. For me, upgrading the front brakes is one of the smartest ways to improve safety and overall performance on the Fourtrax.
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