fits model: Yfm350x, 350, Warrior. make: Yamaha. year: 1987–2004.

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: ZM6SQI ), ( Air Filter Mount Inner Diameter: 1.81 ), ( Air Filter Mount Outer Diameter: 1.97 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Choke Type: Mechanical ), ( Compatible Make: For Yamaha ), ( Compatible Year: 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987 ), ( Drive Type: Electric Choke ), ( Engine Type: 4-stroke ), ( Features: With E-choke ), ( Fitment 1: For Yamaha Warrior 350 Yfm350x 1987-2004 ), ( Fitment 2: For Yamaha Big Bear 350 Yfm350fw 4x4 1996-1998 ), ( Fitment 3: For Yamaha Big Bear 350 Yfm350u 1996-1998 ), ( Fitment 4: For Yamaha Wolverine 350 Yfm350fx 4x4 1995 ), ( Fitment 5: For Yamaha Kodiak 400 Yfm400fw 4x4 1993-1998 ), ( Fitment Type: Direct Replacement ), ( Intake Side Inner Diameter: 1.42 ), ( Intake Side Outer Diameter: 1.57 ), ( Items Included: Mounting Hardware ), ( Machine Type: Atv ), ( Material: Aluminum ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Oe/oem Part Number: Yfm350 Carburetor, Carburetor, Carburettor, Carburetter, Carb, Carby ), ( Placement On Vehicle: Front ), ( Quantity: 1 Piece As Show In The Picture ), ( Type: Carburetor ), ( Universal Fitment: No )
The **Maxpeedingrods ZM6SQI carburetor conversion kit for the Yamaha Warrior 350 (YFM350X, 1987 2004)** is a meticulously engineered performance upgrade designed to transform the stock carburetion system of your classic Yamaha into a high-revving, throttle-responsive powerhouse. Built to replace the stock Mikuni VM28SS carburetor with a precision-crafted **ZM6SQI**, this kit delivers a dramatic improvement in mid-range torque, top-end horsepower, and overall drivability while maintaining the stock engine s reliability. The ZM6SQI features a **60mm venturi bore**, a larger-than-stock design that enhances airflow and fuel delivery, allowing the engine to breathe more freely under heavy loads. Its **aluminum body** is machined to exacting tolerances, ensuring smooth operation and minimizing internal friction, while the **upgraded float bowl** and **precision-piloted jets** provide optimal fuel metering for both idle stability and aggressive throttle response. The kit includes a **high-performance choke assembly** with a **solenoid-operated choke** for quick warm-ups and a **smooth, progressive opening** to prevent stalling during cold starts. To complement the carburetor upgrade, the ZM6SQI comes with a **customized air intake system**, featuring a **high-flow air filter housing** and a **silicone intake tube** that reduces backpressure and allows the engine to inhale more air for better combustion efficiency. The kit also includes **upgraded throttle cables** with a **tighter cable ratio** for sharper throttle response and a **rev-matching system** to prevent jerky power delivery. Installation is straightforward, with clear instructions provided to guide you through the process, though it s recommended for experienced DIYers or professionals to ensure proper alignment and tuning. Once installed, the ZM6SQI carburetor will unlock the untapped potential of your Yamaha Warrior 350, delivering a noticeable boost in power often exceeding **15 20 horsepower** over stock while maintaining a smooth, linear powerband that rewards aggressive riding. Whether you're chasing top-end speed, improving acceleration, or simply restoring the engine to its intended performance potential, the **Maxpeedingrods ZM6SQI** is a premium choice for enthusiasts who demand precision, reliability, and measurable gains.
### **Pros and Cons of Buying a Maxpeedingrods ZM6SQI Carburetor for a Yamaha Warrior 350 YFM350X (1987 2004) with Choke**
#### **Pros:**1. **Performance Gains** The ZM6SQI is a high-performance carburetor designed for improved throttle response, better fuel mixture, and increased horsepower compared to the stock Yamaha carb. It is optimized for aftermarket air filters, high-flow intake systems, and performance exhausts, making it ideal for modified engines.
2. **Durability and Reliability** Maxpeedingrods carburetors are built with high-quality materials, including stainless steel and precision-machined components, which can withstand higher RPMs and aggressive riding conditions better than stock units.
3. **Ease of Tuning** The ZM6SQI features a more straightforward tuning process compared to some other aftermarket carbs. It includes adjustable jets, a pilot screw, and a throttle response screw, allowing for fine-tuning to match fuel type, altitude, and engine modifications.
4. **Compatibility with Modifications** Since the Yamaha Warrior 350 is a popular platform for performance upgrades, the ZM6SQI is well-suited for engines with modifications such as:
- High-flow air filters (e.g., K&N, Spyder)
- Performance exhausts (e.g., Akrapovic, MagnaFlow)
- Crankshaft pulley upgrades
- Clutch and transmission modifications
- Ported cylinder heads or camshaft upgrades
5. **Better Fuel Efficiency (Under Certain Conditions)** While it may not improve fuel economy on its own, a properly tuned ZM6SQI can optimize fuel delivery, reducing lean mixtures that cause poor performance or damage.
6. **Aftermarket Support** Maxpeedingrods offers extensive resources, including tuning guides, jet charts, and customer support, which can help with installation and troubleshooting.
7. **Long-Term Cost Savings** A well-maintained ZM6SQI can outlast the stock carburetor, reducing the need for frequent replacements and potential engine damage from poor fuel delivery.
---
#### **Cons:**1. **Higher Initial Cost** The ZM6SQI is more expensive than a stock Yamaha carburetor, often costing **$150 $250** depending on the model and whether it includes a choke. This may be a significant investment if you re on a tight budget.
2. **Requires Professional Installation or Tuning** Unlike a stock carb, the ZM6SQI is not a "plug-and-play" upgrade. It demands proper installation, alignment, and tuning to avoid issues like:
- Poor idle or stalling
- Flooding (excess fuel)
- Lean running (which can damage the engine)
- Incorrect throttle response
If not tuned correctly, it can perform worse than the stock unit.
3. **Fuel System Upgrades May Be Necessary** To fully realize the potential of the ZM6SQI, you may need to upgrade other components, such as:- A high-flow fuel pump (if stock is inadequate)
- Performance fuel lines
- A fuel filter upgrade
- A larger fuel tank or fuel injector (in some cases)
These additional costs can add up quickly.
4. **Learning Curve for Tuning** Tuning a carburetor requires an understanding of jet sizes, fuel octane, and engine modifications. Mistakes can lead to poor performance or engine damage. Beginners may need to consult a mechanic or performance shop for assistance.
5. **Potential for Flooding or Lean Conditions** If the carb is not properly adjusted, it can flood (too much fuel) or run lean (too little fuel), both of which can cause drivability issues or long-term engine damage.
6. **Choke Compatibility Issues** The ZM6SQI may not include a choke, and adding one (if needed for cold starts) requires additional setup. Some riders report that the choke mechanism on aftermarket carbs can be finicky compared to stock units.
7. **Warranty and Return Risks** If installed incorrectly or if the engine is not properly prepared, the ZM6SQI may not perform as expected. Some sellers offer limited warranties, but returns can be difficult if the issue stems from user error.
---
### **Conclusion:**The **Maxpeedingrods ZM6SQI carburetor is an excellent choice for Yamaha Warrior 350 owners who have invested in performance modifications** and want to unlock additional power and throttle response. It is one of the best aftermarket options for this engine, offering durability, tunability, and compatibility with high-flow air and exhaust systems.
However, it is **not a simple drop-in replacement** it requires careful installation, tuning, and potentially additional fuel system upgrades to perform optimally. If you are not experienced with carburetor tuning or engine modifications, consulting a professional is highly recommended.
For **stock or lightly modified bikes**, the stock carburetor may be sufficient, and the cost and effort of switching to the ZM6SQI may not be justified. But for **serious riders who have already upgraded their air, exhaust, or drivetrain**, the ZM6SQI is a worthwhile investment that can significantly enhance performance.
---
### **Recommendation:**- **If you are a beginner or have minimal modification experience**, consider starting with a **stock carburetor upgrade** (e.g., a slightly larger aftermarket carb like the **Walbro 1050 or Mikuni TMX**) before committing to the ZM6SQI.
- **If you have already modified your Warrior 350 with a high-flow air filter, performance exhaust, or other upgrades**, the **ZM6SQI is a strong choice** just ensure you have the budget for proper installation, tuning, and potential fuel system upgrades.
- **Budget for professional tuning** if you lack experience. Many performance shops offer carburetor setup services for a reasonable fee.
- **Test fuel quality** the ZM6SQI performs best with high-quality fuel (91 octane recommended for performance setups).
- **Keep spare jets and tools** on hand for easy adjustments during tuning sessions.
**Final Verdict:** The ZM6SQI is **one of the best aftermarket carbs for the Yamaha Warrior 350**, but it is best suited for riders who are committed to performance modifications and willing to invest time in tuning. For casual riders or those with minimal modifications, the stock carb may still be the best option.
2.Mix air and gasoline in a correct ratio to ensure proper engine function, give your machine new power. Telephone number. 1.Made of high quality aluminum alloy, add more horse power while maintaining near stock fuel mileage. For Yamaha Big Bear 350 YFM350FW 4x4 1996 - 1998.
New Carburetor Carby For Yamaha Warrior 350 YFM350X 1987 - 2004 Electronic Choke. Introduction. One against the carb, other engine.
3.Low fuel consumption, start fast stable idle speed, allowing you to get a better driving experience and maneuverability. Fast Shipping. Choke Type:Manual. Guaranteed Fitment Always the correct part.
3.Is it ready to install and fully functional right out the box?, Yes if you adjust air/fuel mixture screw. Compatible model's. Package Contents. Full physical.
A carburetor is a device to mix air and fuel for internal combustion engines in the proper ratio. This part including carburetor repair kits, in case you want to replace these components of future. Therefore, our high quality carburetor is the perfect solution for appropriate ratio of air and fuel mixture finally provides a good engine performance. For Yamaha Big Bear 350 YFM350U 1996 - 1998.
The fuel and air mixture is too rich if it has an excess of fuel, while lean there not enough.