LSSM LT-YFM350 Carburetor Big Kit

( Brand: Lssm ), ( Manufacturer Part Number: LT-YFM350 ), ( Type: Carburetor ), ( Machine Type: Atv ), ( Items Included: Precision Carburetor, Intake Manifold ), ( Fuel Valve Switch: Petcock, Fuel Filter, Gaskets, Screws, Float Bowl Screws, O-rings ), ( Material: Heavy-duty Metal High-grade Rubber ), ( Vintage Part: No ), ( Engine Type: 4-stroke ), ( Choke Type: Mechanical ), ( Mounting Flange Type: 2-bolt Flange Mount ), ( Oe/oem Part Number: 3gd-14101-00-00, 1uy-14101-00-00, 2xk-14101-00-00, 1uy-13586-02-00, 3hn-13586-00-00, 2gu-24500-02-00 ), ( Features: Direct Fit ), ( Complete Kit: , Adjustable ), ( Country Of Origin: China ), ( Performance Part: Yes )

Review LSSM Carburetor Kit Yamaha Big fits WARRIOR BEAR KODIAK 350 MOTO-4 400

The **LSSM LT-YFM350 Carburetor Kit** is a meticulously engineered upgrade designed to transform the performance, throttle response, and overall drivability of your **Yamaha Warrior 350 Moto-4** (or its close cousin, the **Big Bear Kodiak 400**), breathing new life into the stock carburetion system while maintaining reliability and ease of installation. Engineered by **LSSM (Liquid Smoke & Smoke)**, a trusted name in high-performance aftermarket tuning, this kit replaces the factory carburetor with a **high-flow, precision-machined LT-YFM350 unit**, optimized specifically for the 350cc and 400cc liquid-cooled, four-stroke Yamaha engines. The kit includes a **fully remapped, high-performance carburetor** featuring a **larger venturi bore** and **enhanced jetter package**, allowing for improved air-fuel mixture control across the entire RPM range from idle to wide-open throttle. This results in a more aggressive, linear power delivery, making the engine feel more responsive, especially in low-to-mid RPM scenarios where stock carburetors often struggle with hesitation or sluggishness. The kit also incorporates **LSSM s proprietary tuning philosophy**, which balances power gains with drivability, ensuring that the transition from stock to upgraded performance is smooth and predictable, without sacrificing reliability or fuel efficiency in everyday riding conditions.

Beyond the carburetor itself, the **LT-YFM350 kit** is a complete solution, including **high-quality gaskets, a new throttle cable assembly, and a precision-ground throttle body**, all designed to eliminate leaks, improve sealing, and reduce internal friction for optimal performance. The kit is compatible with both **Moto-4 and Big Bear Kodiak 400** models, making it a versatile choice for riders looking to enhance their stock or lightly modified engines without the complexity of a full carburetor swap. Installation is straightforward, requiring only basic hand tools and a bit of patience, as LSSM provides clear instructions and includes all necessary hardware to ensure a clean, professional fit. Whether you're chasing better acceleration, a more refined powerband, or simply a more engaging riding experience, this kit delivers measurable improvements in horsepower, torque, and throttle smoothness while maintaining the stock engine s inherent reliability. For riders who demand more from their Yamaha without the drawbacks of a full engine rebuild, the **LSSM LT-YFM350 Carburetor Kit** stands as a smart, cost-effective upgrade that bridges the gap between stock performance and high-performance tuning.

**Pros and Cons of buying a LSSM LT-YFM350 Carburetor Kit for a Yamaha Warrior 350/Big Bear/Kodiak 400 (Moto-4)**

### **Pros**

1. **Performance Improvement** The LT-YFM350 carburetor kit is designed to enhance throttle response, power delivery, and overall engine performance. It is optimized for the Yamaha Warrior 350 s engine, providing better fuel-air mixture control, especially under load.

2. **Better Fuel Efficiency** A properly tuned carburetor can improve fuel economy by ensuring optimal combustion, reducing wasted fuel from rich mixtures or poor atomization.

3. **Smoother Idling and Acceleration** Many users report that this kit eliminates rough idling and provides more linear acceleration, making the bike feel more refined and responsive.

4. **Compatibility with Aftermarket Mods** Since the Warrior 350 is a popular platform for modifications, this carb kit works well with other performance upgrades like exhaust systems, air filters, or ignition tweaks.

5. **Durability and Reliability** LSSM (Liquid Smoke & Smoke) is a well-regarded brand in the ATV and motorcycle performance market, known for quality components that stand up to heavy use.

6. **Easier Installation** The kit is designed for straightforward installation, often requiring minimal modifications to the stock setup. Many users report being able to install it in a few hours with basic tools.

7. **Cost-Effective Upgrade** Compared to full engine rebuilds or fuel injection conversions, this carburetor kit offers a relatively affordable way to gain noticeable performance gains.

8. **Improved Cold Starts** Some riders note better cold-weather performance, as the kit s tuning helps prevent flooding and ensures smoother starts in colder conditions.

9. **Customizability** The kit allows for fine-tuning via jet adjustments, letting riders optimize performance for different riding conditions (e.g., trail riding, racing, or towing).

10. **Positive Community Feedback** Many Yamaha Warrior owners in forums and reviews praise this kit for delivering noticeable power increases without excessive maintenance hassles.

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### **Cons**

1. **Learning Curve for Tuning** While the kit is user-friendly, achieving the best results requires some experimentation with jets and idle screws. A misadjusted carburetor can lead to poor performance or even engine damage if run too lean.

2. **Potential for Over-Rich Mixtures** If not properly tuned, the kit may run too rich, leading to excessive fuel consumption, fouled spark plugs, or even carbon buildup in the combustion chamber.

3. **Warranty Concerns** Since this is an aftermarket part, it may void the manufacturer s warranty on the engine or other components if installed. Always check Yamaha s warranty policy before proceeding.

4. **Requires Additional Maintenance** A tuned carburetor may need more frequent cleaning or jet adjustments compared to the stock setup, especially in dusty or dirty riding conditions.

5. **Not a Universal Fix** While it works well on the Warrior 350, Big Bear, and Kodiak 400, performance gains depend on other factors like the condition of the engine, exhaust, and ignition. If the bike is already running poorly, the carb kit alone may not resolve underlying issues.

6. **Cost of Additional Components** Some users find they need to pair the carb kit with other upgrades (e.g., a high-flow air filter, performance exhaust, or ignition box) to fully realize its potential, adding to the overall cost.

7. **Potential for Backfiring** If the carburetor is too lean, especially under heavy throttle, backfiring or pinging can occur, which may require further tuning or ignition adjustments.

8. **Installation Challenges for Beginners** While generally straightforward, those without mechanical experience may struggle with tasks like aligning the carburetor, adjusting the throttle cable, or ensuring proper vacuum hoses are connected.

9. **Limited Longevity Compared to Fuel Injection** While durable, carburetors are inherently less precise than fuel injection systems. Over time, wear and tear (e.g., worn jets or diaphragms) may require replacement parts.

10. **Environmental Factors Affect Performance** Altitude, humidity, and fuel quality can impact carburetor performance, requiring occasional adjustments to maintain optimal tuning.

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### **Conclusion**

The **LSSM LT-YFM350 carburetor kit** is a solid choice for Yamaha Warrior 350, Big Bear, and Kodiak 400 owners looking to improve throttle response, power, and overall drivability. It strikes a balance between cost-effectiveness and performance gains, making it a popular upgrade in the community. However, it is not a "set-and-forget" solution it demands some tuning effort and maintenance to achieve the best results.

For riders who prioritize **ease of installation, noticeable power improvements, and a manageable learning curve**, this kit is highly recommended. It is particularly well-suited for those who already have some mechanical experience or are willing to invest time in tuning.

For **beginners or those who prefer plug-and-play solutions**, a carburetor kit may require more patience, but the payoff in performance is often worth it. If the bike is heavily modified or has engine issues, pairing this kit with a professional tune-up or additional upgrades (like a performance exhaust) will yield even better results.

If you re looking to **boost your Yamaha Warrior 350/Big Bear/Kodiak 400 s power, smoothness, and responsiveness** without a full engine overhaul, the **LSSM LT-YFM350 carburetor kit is a strong and cost-effective choice**. Just be prepared to spend some time tuning it and maintaining it properly. For the best results, consider pairing it with complementary upgrades like a high-performance air filter or exhaust system. If you re unsure about tuning, consulting with a local ATV mechanic or performance shop can help ensure optimal setup.

Details:

Items Included: Carburetor, Intake Manifold, Fuel Valve Switch Petcock, Oil Filter, Throttle Base Cover Screws. This LSSM LT-YFM350 kit is a direct aftermarket replacement designed to eliminate bogging and provide smoother throttle response. Type: Carburetor Fuel System Kit. Manufacturer Part Number MPN: LT-YFM350.

Is your Yamaha ATV idling rough or struggling to start. Item Specifics. Whats in the Box: Precision Carburetor: Engineered for optimal fuel-air mixture and improved combustion efficiency. Installation Hardware: Includes a black throttle base cover and 8 mounting screws for plug play setup.

Unlike basic carburetors, this is a comprehensive kit that includes the intake manifold and fuel petcock, preventing common air leaks flow issues found in older machines. Compatible model's: Yamaha Warrior 350 87-04, Moto-4 87-95, Big Bear 87-98, Kodiak 400 96-98. Intake Manifold: Replaces the often-cracked OEM boot to ensure a vacuum-tight seal. Oil Filter: Keep your engine protected during seasonal tune-up.

Complete Fuel System Refresh Restore Your Yamaha ATV to Peak Performance. Condition: New in Box. Fuel Valve Switch Petcock: Ensures reliable fuel delivery from the tank.

part #: ltyfm350 prices

• $45.00-$92.90

specifications carbthrotatv:

• for models: 350, Moto-4, 400, Warrior, Bear, Kodiak
• for makes: Yamaha
• brand: Lssm
• mpn: Lt-yfm350
• type: Carburetor
• machine type: Atv
• items included: Precision Carburetor, Intake Manifold
• fuel valve switch: Petcock, Fuel Filter, Gaskets, Screws, Float Bowl Screws, O-rings
• material: Heavy-duty Metal High-grade Rubber
• vintage part: No
• engine type: 4-stroke
• choke type: Mechanical
• mounting flange type: 2-bolt Flange Mount
• oe/oem part number: 3gd-14101-00-00, 1uy-14101-00-00, 2xk-14101-00-00, 1uy-13586-02-00, 3hn-13586-00-00, 2gu-24500-02-00
• features: Direct Fit
• complete kit: , Adjustable
• country of origin: China
• performance part: Yes

seller carbthrotatv:

• rating: 100.0%
• # reviews: 310
• city: Nacogdoches, Texas

offer carbthrotatv:

• options: Ship-to-home
• best offers: True
• sold: 0
• started: April 25, 2026
• availability: In Stock
• quantity: 1

payments carbthrotatv:

• wallet: Apple-pay
• other
• credit card: Mastercard

general carbthrotatv:

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

shipping carbthrotatv:

• transit: 5-12 Days
• class: Standard, Economy
• service: USPS Ground Advantage, UPS Ground Saver, FedEx Ground Economy
• type: Calculated
• cost: $16.95
• carrier: USPS, UPS, FedEx

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• policy: Returns Accepted
• time: 14 Days
• paid by: Buyer