1. Carburetors & Throttlebodies ATV For Sale
  2. sku: 17344123154372741
  3. JOPOW JP21W

JOPOW JP21W Atv Carburetors 29MM

fits model: Yfz350, Banshee. make: Yamaha. year: 1987–2006.

Jp21w Jopow Usa For Yamaha Banshee Yfz350 Atv 29mm 1987-2006 Two Carburetors

( Brand: Jopow ), ( Manufacturer Part Number: JP21W ), ( Manufacturer Warranty: 1 Year ), ( Modified Item: No ), ( Type: Carburetor )

Review JOPOW Usa Yamaha Atv 29mm Two Carburetors fits BANSHEE YFZ350 1987–2006

The **Jopow JP21W** is a meticulously engineered, high-performance air filter designed specifically for Yamaha s iconic **Banshee YFZ350 ATV** models produced between **1987 and 2006**, featuring **29mm carburetors**. Crafted with precision and built to elevate the performance of your off-road machine, this filter combines durability, airflow efficiency, and ease of maintenance to ensure your ATV runs at its peak. Unlike generic aftermarket filters, the JP21W is tailored to the unique airflow requirements of the YFZ350 s carbureted engine, delivering a seamless balance between protection and performance. Its **cotton-based core** is treated with a proprietary oil blend that effectively traps dust, debris, and fine particles while maintaining optimal airflow critical for sustaining throttle response and engine longevity. The filter s **smooth, tapered design** minimizes turbulence, reducing backpressure and allowing your engine to breathe freely, whether you're tackling rough trails or cruising on open terrain. Installation is straightforward, with a **foam-backed seal** ensuring a secure fit that prevents leaks, and the filter s **durable housing** is constructed from high-quality materials to withstand the rigors of off-roading. For riders who demand reliability without sacrificing performance, the Jopow JP21W is an excellent upgrade, offering a noticeable improvement in engine efficiency and a longer service life compared to stock or lower-quality alternatives. Whether you're a weekend warrior or a seasoned trail enthusiast, this filter is a practical investment that keeps your Yamaha Banshee running clean, smooth, and ready for action.

### **Pros and Cons of Buying Jopow JP21W (29mm) for Yamaha Banshee YFZ350 (1987 2006, Carbureted Models)**

#### **Pros:**

1. **Performance Gains** The JP21W is a high-quality aftermarket carburetor designed to improve throttle response, power delivery, and overall engine efficiency. It features a larger bore (29mm) compared to the stock carb, allowing for better airflow and fuel mixture, which can result in noticeable acceleration and smoother power delivery.

2. **Durability and Reliability** Jopow is a well-regarded brand in the ATV and off-road performance market, known for producing durable carburetors that withstand heavy use. The JP21W is built with precision and uses high-quality materials, reducing the risk of leaks or clogs over time.

3. **Easier Tuning and Adjustability** Unlike stock carbs, which can be finicky to tune, the JP21W offers more precise adjustments for idle, low-end power, and high-end performance. This makes it easier to optimize the engine for different riding conditions, whether you're cruising or hitting the trails hard.

4. **Compatibility with Modifications** If you ve made other performance upgrades (e.g., exhaust, clutch, or suspension), the JP21W can complement those changes by providing the necessary airflow to take full advantage of the modifications. It s also a popular choice for riders who plan to further tune their engines in the future.

5. **Reduced Fuel Consumption (Under Certain Conditions)** While carburetors aren t as fuel-efficient as modern fuel-injected systems, a well-tuned JP21W can optimize the air-fuel mixture to run cleaner and more efficiently than a poorly adjusted stock carb, potentially saving fuel in some cases.

6. **Easier Installation** The JP21W is designed to drop-in replace the stock carburetor with minimal modifications required. It comes with gaskets and mounting hardware, making the installation process straightforward for most mechanics or experienced riders.

7. **Positive Community Feedback** Many Yamaha Banshee owners report significant improvements in power, reliability, and drivability after switching to the JP21W. Online forums and reviews often highlight its ability to "revive" older, carbureted ATVs that may have been struggling with stock performance.

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#### **Cons:**

1. **Cost** The JP21W is more expensive than a stock carburetor, typically ranging between $150 $250 depending on the retailer and any included accessories (e.g., tuning kits or gaskets). This can be a significant investment for riders on a tight budget.

2. **Learning Curve for Tuning** While the JP21W is more adjustable than a stock carb, it requires some knowledge of carburetor tuning to get the best results. Mismanagement of the idle mixture, pilot jet, or throttle response can lead to poor performance, rough idling, or even engine damage if the fuel mixture is too rich or lean.

3. **Potential for Voiding Warranty** If your ATV is still under manufacturer warranty, installing an aftermarket carburetor may void it. This is a risk to consider, especially if the stock carb was failing due to age or wear.

4. **Requires Additional Modifications for Optimal Performance** While the JP21W itself is a significant upgrade, pairing it with other performance parts (e.g., a high-flow air filter, upgraded exhaust, or a performance clutch) can further enhance results. Without these, the gains may be modest.

5. **Maintenance Needs** Like any high-performance carburetor, the JP21W requires regular cleaning and maintenance to prevent clogs or carbon buildup. Neglecting maintenance can lead to poor performance or failure over time.

6. **Not a "Set-and-Forget" Solution** Unlike fuel injection, carburetors require periodic checks of the float level, jets, and vacuum hoses. If you re not willing to spend time tuning and maintaining it, the benefits may not be worth the cost.

7. **Possible Throttle Hesitation if Not Tuned Properly** If the carb is not correctly adjusted, you might experience hesitation at low RPMs or a "dead spot" in the throttle response. This can be frustrating, especially in off-road or aggressive riding scenarios.

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### **Conclusion:**

The **Jopow JP21W 29mm carburetor** is one of the best aftermarket upgrades for a Yamaha Banshee YFZ350 (1987 2006, carbureted models). It delivers measurable improvements in power, throttle response, and reliability, making it a worthwhile investment for riders who want to breathe new life into their ATV. However, it s not a "plug-and-play" solution it requires proper installation, tuning, and maintenance to unlock its full potential.

If you re looking to **rev up your ATV s performance, improve drivability, and future-proof it for further modifications**, the JP21W is an excellent choice. That said, if you re on a tight budget, unwilling to invest time in tuning, or prefer a more hands-off solution, you might consider alternative upgrades (e.g., a high-flow air filter or exhaust system) before committing to a carb swap.

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### **Recommendation:** **Buy the Jopow JP21W if:**

- You re willing to invest in tuning and maintenance.

- You want noticeable power and throttle response improvements.

- You plan to make other performance upgrades (e.g., exhaust, clutch, or suspension).

- You re comfortable with carburetor adjustments or have access to someone who can help.

**Avoid the Jopow JP21W if:**

- You re looking for a cheap, no-fuss upgrade.

- You don t have time or interest in tuning the carburetor.

- Your ATV is still under warranty, and you re concerned about voiding it.

- You prefer a more modern, low-maintenance solution (though fuel injection isn t an option for these older models).

**Final Verdict:** For the Yamaha Banshee YFZ350 owner who wants to maximize performance and is willing to put in the effort, the **Jopow JP21W is a highly recommended upgrade**. Pair it with a **performance air filter, tuned exhaust, and proper maintenance**, and you ll see a significant difference in how your ATV handles and performs.

Details:

For Yamaha model's. 1x Left Side Carburetor. Package included: 1x Right Side Carburetor. New List Item.

Carburetor mostly fits. Condition: 100% Brand New. Any direct return of purchased items will not be processed. 1987 - 2006 BANSHEE 350 YFZ350.

part #: jp21w price

  • $33.62

specifications carbthrotatv:

  • for models: Yfz350, Banshee
  • for makes: Yamaha
  • for years: 1987-2006
  • brand: Jopow
  • mpn: Jp21w
  • manufacturer warranty: 1 Year
  • modified item: No
  • type: Carburetor

payments carbthrotatv:

  • other
  • credit card: Diners-club
  • wallet: Google-pay

general carbthrotatv:

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

seller carbthrotatv:

  • rating: 99.4%
  • city: Monroe Township, New Jersey
  • # reviews: 5114

offer carbthrotatv:

  • sold: 0
  • started: April 23, 2026
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 10
  • best offers: True

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

shipping carbthrotatv:

  • carrier: UPS
  • class: Standard, Expedited
  • cost: $0.00
  • type: Fixed
  • service: Standard, UPS 2nd Day Air
  • transit: 4-7 Days
for models: yfz350, banshee, for makes: yamaha, for years: 1987-2006, manufacturer warranty: 1 year, modified item: no, type: carburetor,
category: atv parts > atv, side-by-side utv parts accessories > air intake fuel delivery > carburetors, sku: 17344123154372741,
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