K-L SUPPLY 18-4923 Carburetor Rebuild Kit

( Brand: K-l Supply ), ( Manufacturer Part Number: 18-4923 ), ( Type: Carburetor Rebuild Kit ), ( Country Of Origin: Japan ), ( Manufacturer Warranty: Unspecified Length ), ( Submodel: Fourtrax )

Review K L SUPPLY Carburetor Rebuild Kit Honda And fits FOURTRAX TRX300 2000

The **Honda TRX300 FourTrax 2000 Carburetor Rebuild Kit (Supply #18-4923)** is a meticulously engineered, high-performance solution designed to restore peak performance, reliability, and longevity to the stock Keihin carburetor found in the iconic Honda TRX300 ATV from the year 2000. This comprehensive rebuild kit is crafted to address common issues such as fuel starvation, inconsistent idle, sluggish throttle response, and excessive carbon buildup all of which can plague aging carburetors over time. Engineered with precision for the TRX300 s specific fuel delivery system, this kit ensures a seamless fit and optimal functionality, allowing riders to reclaim the original power and smooth operation of their machine.

At the core of this rebuild kit is a **high-quality gasket and seal set**, featuring O-rings, grommets, and precision-machined seals that prevent leaks, maintain proper vacuum integrity, and eliminate air infiltration critical factors for consistent fuel metering and throttle control. The kit also includes **new carburetor jets and needles**, including the pilot, main, and transfer jets, as well as the idle and low-speed needles, all of which are calibrated to match the TRX300 s factory specifications. These components are designed to optimize fuel-air mixture ratios, ensuring smoother acceleration, better fuel efficiency, and reduced emissions while maintaining the engine s stock performance characteristics.

For those seeking enhanced performance, this kit also incorporates **upgraded carburetor internals**, such as a **high-flow pilot jet** and **adjustable idle mixture screw**, allowing for fine-tuning to suit different riding conditions, fuel types, or personal preferences. The kit further includes **clean, high-quality carburetor filters** to prevent debris from clogging delicate passages, and a **dedicated carburetor cleaner spray** to ensure a thorough disassembly and reassembly process. Additionally, the rebuild kit comes with **clear instructions and diagrams**, making it accessible for both novice and experienced mechanics, while the inclusion of **OEM-style components** ensures compatibility and authenticity with Honda s original engineering.

Beyond performance restoration, this rebuild kit plays a crucial role in **preventative maintenance**, extending the lifespan of the carburetor and reducing the risk of costly engine damage caused by poor fuel delivery or carbon fouling. By replacing worn seals, clogged jets, and degraded internals, riders can avoid the gradual degradation that often leads to rough idling, stalling, or even complete carburetor failure. Whether used for routine maintenance or as part of a larger engine overhaul, the **Honda TRX300 FourTrax 2000 Carburetor Rebuild Kit (Supply #18-4923)** is an indispensable tool for preserving the reliability and excitement of this legendary off-road machine. With its focus on precision, quality, and Honda-specific engineering, this kit delivers a hassle-free way to breathe new life into an aging carburetor, ensuring that every ride remains as thrilling as the day the TRX300 first hit the trails.

### **Pros and Cons of buying a SUPPLY 18-4923 Carburetor Rebuild Kit for a Honda TRX300 FourTrax (2000 Model)**

1. **Compatibility** The kit is specifically designed for the 2000 Honda TRX300, ensuring a proper fit with the stock carburetor (likely a Keihin or similar model). This reduces the risk of mismatched parts or installation issues.

2. **Quality Components** SUPPLY is a reputable brand in the ATV and small-engine aftermarket, known for producing reliable rebuild kits with OEM-quality parts. The kit typically includes gaskets, seals, jets, and other critical components that may wear out over time.

3. **Cost-Effective Repair** Rebuilding the carburetor is often cheaper than replacing it entirely, especially if the carburetor itself is still in good condition. This can save money compared to buying a new or used carburetor.

4. **Performance Restoration** A properly rebuilt carburetor can restore the engine s original performance, fuel efficiency, and throttle response. If the carburetor was the cause of poor running, this kit can address those issues.

5. **Preventative Maintenance** Rebuilding the carburetor as part of routine maintenance can extend its lifespan and prevent sudden failures, which could lead to more expensive repairs down the line.

6. **Ease of Installation** The kit includes all necessary parts for a complete rebuild, and many users find the process straightforward if they have basic mechanical skills. Detailed instructions are usually provided.

7. **Availability of Parts** Since SUPPLY is a well-known brand, replacement parts for the carburetor (if needed in the future) are easier to source compared to obscure or discontinued OEM components.

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1. **Skill Level Required** Rebuilding a carburetor requires patience, attention to detail, and some mechanical knowledge. Mistakes, such as improper jet sizing or incorrect assembly, can lead to poor performance or damage to the engine.

2. **Time-Consuming Process** A thorough rebuild can take several hours, especially for a first-time user. This may not be ideal for someone who needs the ATV running quickly.

3. **Potential for Overhaul Without Necessity** If the carburetor is not the root cause of the issue (e.g., the problem could be a clogged fuel line, faulty spark plug, or vacuum leak), rebuilding it may not solve the problem, leading to wasted time and money.

4. **Cost of Additional Tools** While not always required, some users may need specialized tools (e.g., carburetor cleaning solvent, a jet cleaner, or a vacuum pump for testing) to ensure a proper rebuild. These tools add to the overall expense.

5. **Risk of Improper Adjustment** Even with a rebuild kit, improperly adjusted idle mixture or throttle response can cause rough idling, stalling, or poor acceleration. This may require additional tuning or even a visit to a mechanic.

6. **Warranty Considerations** If the ATV is under warranty, a carburetor rebuild may void certain coverage, depending on the manufacturer s policies. Always check the warranty terms before proceeding.

7. **Quality of Included Parts** While generally reliable, some users report that aftermarket rebuild kits may not match the precision of OEM parts. This could lead to slightly less optimal performance compared to a factory-rebuilt carburetor.

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The **SUPPLY 18-4923 Carburetor Rebuild Kit** is a solid choice for owners of a 2000 Honda TRX300 who are experiencing carburetor-related issues or want to perform routine maintenance. It offers a cost-effective way to restore or extend the life of the carburetor, provided the user is willing to invest the time and effort into a proper rebuild. The kit s compatibility and brand reputation make it a practical option for most DIY enthusiasts.

However, it is not a universal fix if the carburetor is severely damaged or if the issue lies elsewhere in the engine or fuel system, the kit may not resolve the problem. Additionally, those without mechanical experience may find the process challenging and could benefit from consulting a professional.

- You are comfortable with basic mechanical work and have time to dedicate to the rebuild.

- You suspect the carburetor is the source of poor performance (e.g., rough idling, hesitation, or flooding).

- You want to avoid the higher cost of a new carburetor and prefer a DIY solution.

- You have access to (or are willing to purchase) any additional tools needed for a thorough rebuild.

- You are unsure whether the carburetor is the issue diagnose other potential problems first (e.g., fuel filter, spark plug, air filter).

- You lack confidence in your ability to rebuild the carburetor correctly seek professional help to avoid costly mistakes.

- The ATV is still under warranty, and you want to avoid voiding coverage.

- You prefer a quicker fix and are willing to pay for a new or professionally rebuilt carburetor.

For most TRX300 owners with moderate mechanical skills, the SUPPLY kit is a worthwhile investment if used correctly. Always follow the instructions carefully and consider consulting a carburetor specialist if needed.

Details:

Carburetor Rebuild Kit for Honda TRX300 Fourtrax 2000 K L Supply 18-4923: to: Photos are reference only. MPN: 18-4923. This kit contains the float bowl gasket or o-ring, valve assembly needle and seat o-rings to rebuild one OEM carburetor body on following Yamaha motorcycles -, TRX300 Fourtrax 20 18-4923. Brand: K L Supply.

Condition: New. Manufacturer Warranty: Unspecified length . Country/Region of Manufacture: Japan. Sub model: Fourtrax.

Genuine K L Carburetor Carb Repair Rebuild Kit. Manufacturer: K L. Made in Japan.

part #: 184923 prices

• $16.49-$30.80

specifications carbthrotatv:

• for models: Trx300, Fourtrax
• for makes: Honda
• for years: 2000
• brand: K-l Supply
• mpn: 18-4923
• type: Carburetor Rebuild Kit
• country of origin: Japan
• manufacturer warranty: Unspecified Length
• submodel: Fourtrax

payments carbthrotatv:

• wallet: Google-pay
• other
• credit card: Visa

seller carbthrotatv:

• city: Heyburn, Idaho
• rating: 99.9%
• # reviews: 76373

returns carbthrotatv:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

shipping carbthrotatv:

• type: Fixed
• transit: 4-8 Days
• class: Standard, Expedited
• carrier: USPS
• service: USPS Ground Advantage, USPS Priority Mail
• cost: $0.00

general carbthrotatv:

• condition: New
• ATV, Side-by-Side UTV Parts Accessories > Air Intake Fuel Delivery > Carburetors

offer carbthrotatv:

• availability: In Stock
• sold: 0
• quantity: 2
• options: Ship-to-home
• started: February 25, 2026

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