MAXPEEDINGRODS ILG421 Carburetor Big Electric Choke Atv 4-STROKE

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: ILG421 ), ( 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 ), ( Country Of Origin: China )

Review MAXPEEDINGRODS Carburetor Yamaha Big 4-stroke Electric Choke Atv fits BEAR YFM350FW 350 4X4

The **Maxpeeding Rods ILG421 Carburetor** is a meticulously engineered, high-performance upgrade designed specifically for the Yamaha Big Bear 350 (YFM350FW 4x4) ATV, delivering a seamless blend of power, reliability, and precision tuning for both on-road and off-road adventures. Built to replace the stock carburetor with a more responsive and efficient alternative, this aftermarket unit features a **4-stroke electric choke system**, ensuring smooth cold starts and optimal fuel delivery under varying conditions. The ILG421 is crafted from high-quality materials, including durable brass and precision-machined components, which enhance its longevity and resistance to wear, even under the demanding stresses of heavy-duty ATV use. Its **1.5-inch bore** and **1.25-inch throttle bore** dimensions provide a balanced airflow and fuel mixture, allowing for improved throttle response, better low-end torque, and a more linear power curve critical for handling rough terrain, steep climbs, and aggressive acceleration. The electric choke mechanism eliminates the need for manual adjustments, offering convenience and consistency, while the carburetor s adjustable idle screw and pilot jet allow for fine-tuning to match your riding style, fuel type, and environmental conditions. Whether you re tackling rocky trails, muddy off-road courses, or simply seeking a more engaging ride on paved roads, the Maxpeeding Rods ILG421 transforms your Yamaha Big Bear 350 into a more spirited and capable machine. Backed by Maxpeeding Rods reputation for quality and performance, this carburetor is an ideal choice for riders who demand more from their ATV without compromising on durability or ease of installation.

### Pros and Cons of buying a Maxpeedingrods ILG421 Carburetor for a Yamaha Big Bear 350 YFM350FW 4x4 ATV

1. **Performance Enhancement** The ILG421 carburetor is designed to improve throttle response and power output compared to the stock carburetor. It is optimized for higher performance, which can make the ATV feel more responsive and capable, especially in off-road conditions.

2. **Better Fuel Efficiency (Under Certain Conditions)** Some users report improved fuel economy when the carburetor is properly tuned, as it can optimize air-fuel mixture for smoother operation.

3. **Durability and Build Quality** Maxpeedingrods is known for producing high-quality aftermarket carburetors with precision machining and durable materials, which can last longer than stock components if properly maintained.

4. **Compatibility with Modifications** If you plan to add other performance upgrades (such as a high-flow air filter, exhaust, or clutch kit), the ILG421 can better support those modifications without restricting airflow.

5. **Easier Tuning Potential** Unlike stock carbs, which are often limited in adjustability, the ILG421 allows for fine-tuning of idle mixture, throttle response, and idle speed, giving you more control over engine performance.

6. **Reduced Harshness at Low RPMs** Some riders notice smoother operation at lower speeds, which can be beneficial for daily riding and urban use.

7. **Wider Availability of Parts** Since Maxpeedingrods is a well-known brand, finding replacement parts, gaskets, or additional accessories is easier than with some lesser-known manufacturers.

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1. **Cost** The ILG421 carburetor is more expensive than the stock carburetor, and installation may require additional parts (such as a new throttle cable, gaskets, or fuel line). The total cost can add up, especially if you re not already running a performance setup.

2. **Learning Curve for Installation and Tuning** If you re not experienced with carburetor work, installing and tuning the ILG421 can be challenging. Improper installation (e.g., incorrect gasket placement, wrong fuel line routing) can lead to leaks or poor performance. Tuning may require multiple adjustments to achieve optimal settings.

3. **Potential for Over-Performing the Engine** If the carburetor is not properly matched with the rest of the engine components (e.g., stock pistons, crankshaft, or exhaust), it could cause excessive wear or even damage, particularly if the engine is not built for high-performance use.

4. **Fuel System Requirements** A high-performance carburetor like the ILG421 may require a cleaner fuel system (e.g., fuel filter, fuel line upgrades) to prevent clogging or inconsistent performance. Some riders also report that the carburetor benefits from a slightly higher octane fuel for best results.

5. **Possible Backfire or Rough Idle Issues** Newly installed carbs can sometimes cause backfiring or rough idling until properly tuned. This may require patience and multiple adjustments to resolve.

6. **Voided Warranty (If Applicable)** If your ATV is still under manufacturer warranty, installing an aftermarket carburetor may void it, especially if the dealer considers it a "modification."

7. **Not a "Set-and-Forget" Solution** Unlike some performance parts, a carburetor requires periodic maintenance (cleaning, checking for leaks, adjusting jets) to ensure it continues performing optimally.

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The Maxpeedingrods ILG421 carburetor is a solid choice for Yamaha Big Bear 350 owners looking to enhance throttle response, power, and overall drivability. It is particularly beneficial if you plan to run other performance upgrades or if you frequently ride in demanding conditions where extra power is useful. However, it is not a simple drop-in replacement it requires careful installation, tuning, and maintenance to avoid issues like poor performance, fuel waste, or even engine damage.

If you are mechanically inclined and willing to invest time in learning how to tune the carburetor properly, the ILG421 can be a worthwhile upgrade. For riders who prioritize simplicity and do not plan extensive modifications, the stock carburetor may suffice, and the extra cost may not be justified.

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- You are already running or plan to run other performance parts (e.g., high-flow air filter, exhaust, clutch).

- You frequently ride in rough terrain where extra power and throttle response are beneficial.

- You are comfortable with or willing to learn carburetor tuning and maintenance.

- You have a budget to spare for the initial cost and potential tuning adjustments.

- You primarily use the ATV for light, casual riding and do not need extra power.

- You are not mechanically inclined or do not have the time to properly tune and maintain the carburetor.

- You want to keep the ATV s warranty intact (check with Yamaha or your dealer first).

- You are on a tight budget and the stock carburetor meets your performance needs.

For best results, pair the ILG421 with a **high-quality throttle cable, fuel line, and gaskets**, and consider consulting with a Yamaha specialist or performance tuner to ensure proper setup. If you decide to proceed, take your time with installation and tuning to avoid common pitfalls.

Details:

Choke Type:Manual. Package Contents. 1.Made of high quality aluminum alloy, add more horse power while maintaining near stock fuel mileage. The fuel and air mixture is too rich if it has an excess of fuel, while lean there not enough.

Carburetor For Yamaha Big Bear 350 YFM350FW 4X4 4-Stroke Electric Choke ATV Most. Quick, Simple. 2.Mix air and gasoline in a correct ratio to ensure proper engine function, give your machine new power. .

This part including carburetor repair kits, in case you want to replace these components of future. Manufacturer. 3.Is it ready to install and fully functional right out the box?, Yes if you adjust air/fuel mixture screw. Therefore, our high quality carburetor is the perfect solution for appropriate ratio of air and fuel mixture finally provides a good engine performance.

Introduction. A carburetor is a device to mix air and fuel for internal combustion engines in the proper ratio. Compatible model's. For Yamaha Warrior 350 YFM350X 1987 - 2004.

3.Low fuel consumption, start fast stable idle speed, allowing you to get a better driving experience and maneuverability. For Yamaha Big Bear 350 YFM350FW 4X4 1996 - 1998. For Yamaha Big Bear 350 YFM350U 1996 - 1998. One against the carb, other engine.

specifications carbthrotatv:

• for models: Yfm350fw, 350, 4x4, Bear
• for makes: Yamaha
• brand: Maxpeedingrods
• mpn: Ilg421
• 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
• country of origin: China

returns carbthrotatv:

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

seller carbthrotatv:

• city: Elk Grove Village, Illinois
• # reviews: 8887
• rating: 99.7%

payments carbthrotatv:

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

general carbthrotatv:

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

offer carbthrotatv:

• started: April 27, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

shipping carbthrotatv:

• class: Standard
• transit: 3-8 Days
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• carrier: FedEx
• type: Fixed

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