AFTERMARKET BRAND KEIHIN 34PJ Pj Carb Set Carburetors

( Brand: Aftermarket Brand Keihin ), ( Manufacturer Part Number: 34PJ ), ( Intake: Spigot Od ), ( Pilot Jet: 55 ), ( Engine Type: 2-stroke ), ( Jet Needle: 48-ceg ), ( Manufacturer Warranty: Yes ), ( Features: Jetting ), ( Total Length: 91mm ), ( Machine Type: Atv ), ( Material: Aluminum ), ( Float Height: 16mm ), ( Vintage Part: No ), ( California Prop 65 Warning: This Product Contains A Chemical Knows To Them State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Main Jet: 152 ), ( Oe/oem Part Number: 016-039 ), ( Throttle Valve: Slide Cutaway ), ( Airbox/filter Od: 58mm ), ( Country Of Origin: China ), ( Integrated Adjuster: Choke Operates Idle Speed )

Review AFTERMARKET BRAND KEIHIN Yamaha 34mm Pj Carb Set Carbs Carburetors fits BANSHEE 350

The **Keihin 34PJ carburetor set** is a precision-engineered performance upgrade designed specifically for Yamaha s iconic Banshee 350, delivering a seamless blend of reliability, responsiveness, and throttle control that elevates this classic dirt bike to new heights. Crafted from high-grade aluminum with meticulously machined passages, these **34mm 34PJ carburetors** are a direct evolution of Keihin s legendary carburetor technology, offering a refined air-fuel mixture that enhances both power delivery and smoothness across the entire RPM range. The **34PJ model** features a **fixed-jet design** with a **34mm venturi**, optimized for the Banshee s naturally aspirated engine, ensuring consistent performance under varying conditions whether you're carving through tight trails or pushing the limits on wide-open sections. The **piston-type throttle valve** provides crisp, progressive opening, reducing lag and improving acceleration, while the **precision-ground needle and jet assembly** allows for fine-tuning of fuel delivery for optimal power band and throttle response. Built to withstand the demands of high-performance riding, these carbs are equipped with **durable seals, a robust gasket system, and a sturdy mounting bracket**, ensuring long-lasting durability and minimal maintenance. Whether you're chasing speed, refining your bike s handling, or simply restoring the Banshee s original performance, the **Keihin 34PJ set** delivers a balance of power, reliability, and ease of use that makes it a standout choice for enthusiasts and racers alike. Perfect for both stock and modified Banshee 350 applications, these carbs are a testament to Keihin s commitment to engineering performance solutions that push boundaries without compromising on quality.

### Pros and Cons of Buying a Keihin 34PJ Carburetor Set for a Yamaha Banshee 350 with 34mm Throttle Bodies

1. **Performance Enhancement** The Keihin 34PJ carburetor is designed for high-performance applications, offering improved throttle response, better fuel atomization, and increased power output compared to stock carburetors. This is particularly beneficial for engines like the Yamaha Banshee 350, which can benefit from optimized airflow and fuel delivery.

2. **Durability and Reliability** Keihin is a well-respected brand in the performance aftermarket, known for producing high-quality carburetors that are built to last. The 34PJ is a robust carburetor with a solid construction, capable of handling the demands of aggressive driving and racing.

- **Adjustable jets and needles** for fine-tuning performance.

- **Sealed gaskets and O-rings** to prevent leaks and ensure a tight seal.

- **Durable materials** such as brass and stainless steel components where necessary.

This level of craftsmanship ensures consistent performance and easier maintenance.

4. **Compatibility with Modifications** The 34PJ carburetor is often used in conjunction with other performance upgrades, such as larger throttle bodies (34mm), high-flow intake manifolds, and performance exhaust systems. It pairs well with the Yamaha Banshee 350 s engine modifications, allowing for a balanced and optimized setup.

5. **Aftermarket Support** Keihin is widely used in the performance community, meaning there is ample availability of replacement parts, tuning guides, and community support. This makes troubleshooting and maintenance easier if issues arise.

6. **Improved Fuel Efficiency (Under Certain Conditions)** While carburetors are not as fuel-efficient as modern fuel injection systems, a well-tuned Keihin 34PJ can optimize fuel delivery to reduce waste, especially when paired with other performance upgrades that improve engine efficiency.

7. **Classic Aesthetic and Build Quality** For enthusiasts who appreciate the look and feel of high-quality mechanical components, the Keihin 34PJ offers a clean, professional appearance that complements the Banshee s sporty design.

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1. **Complexity and Tuning Requirements** Carburetors like the Keihin 34PJ require careful tuning to achieve optimal performance. This includes adjusting jets, needles, and idle mixture screws. Unlike modern fuel-injected systems, carburetors are more sensitive to changes in altitude, temperature, and fuel quality, which can complicate tuning, especially for beginners.

2. **Maintenance Intensive** Carburetors are prone to clogging from dirt, varnish buildup, or fuel impurities. They require regular cleaning and maintenance, including:

- **Regular carburetor cleaning** (every 50-100 hours of use or as recommended).

- **Checking and replacing gaskets, O-rings, and seals** over time.

- **Adjusting idle mixture and throttle response** to compensate for wear or fuel changes.

This can be time-consuming and may require specialized tools or knowledge.

3. **Potential for Fuel Waste** Carburetors are not as efficient as fuel injection systems in terms of fuel delivery. They can lead to slightly richer mixtures under certain conditions, which may result in more fuel consumption, especially if not properly tuned. This is less of an issue for short-term use but can add up over time.

4. **Cost of Replacement Parts** While the initial cost of a Keihin 34PJ carburetor set is reasonable, replacement parts such as jets, needles, gaskets, and seals can add up over time. If the carburetor is not maintained properly, it may fail prematurely, leading to additional expenses.

5. **Learning Curve for Beginners** If you are new to carbureted engines, the learning curve for tuning and maintaining a Keihin 34PJ can be steep. Mistakes in tuning can lead to poor performance, rough idling, or even engine damage if the mixture is too rich or lean.

6. **Compatibility Issues with Stock Components** While the 34PJ is designed to work with the Yamaha Banshee 350, some stock components (such as the intake manifold or throttle linkage) may not be fully optimized for the carburetor. Upgrading these parts may be necessary for the best performance, adding to the overall cost.

7. **Environmental Sensitivity** Carburetors are more sensitive to environmental factors such as altitude, humidity, and fuel quality. For example:

- **High-altitude driving** may require additional adjustments to the carburetor.

- **Poor-quality fuel** can clog the carburetor more quickly.

- **Extreme temperatures** can affect fuel vaporization and mixture, requiring occasional retuning.

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The Keihin 34PJ carburetor set is an excellent choice for enthusiasts looking to significantly improve the performance of their Yamaha Banshee 350, especially when paired with 34mm throttle bodies. It offers superior power delivery, durability, and precision compared to stock carburetors. However, it comes with trade-offs, including increased maintenance requirements, a steeper learning curve for tuning, and potential fuel inefficiencies if not properly managed.

For those willing to invest the time and effort into tuning and maintenance, the Keihin 34PJ is a fantastic upgrade that will enhance throttle response, top-end power, and overall drivability. For casual riders or those who prefer a more hands-off approach, a fuel-injected system might be a more practical choice, despite the lack of mechanical tuning satisfaction.

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If you are an experienced rider or mechanic comfortable with carburetor tuning and maintenance, the **Keihin 34PJ carburetor set is highly recommended** for your Yamaha Banshee 350. It will provide noticeable performance gains and is a reliable choice for both street and track use.

1. **Start with a High-Quality Stock Replacement Carburetor** If you are unsure about carburetor tuning, opt for a reliable aftermarket carburetor that is easier to set up, such as a Mikuni or Dell Orto, before committing to a Keihin.

2. **Pair with a Performance Intake and Exhaust** Even with a Keihin carburetor, upgrading the intake manifold and exhaust will maximize airflow and power.

3. **Invest in a Carburetor Tuning Guide or Professional Help** If you are new to carburetors, consult a tuning guide specific to the Keihin 34PJ or seek help from a mechanic experienced with carbureted engines.

4. **Consider Fuel Injection as a Long-Term Upgrade** If you eventually want a more modern and low-maintenance solution, fuel injection (such as a standalone ECU system) is a superior alternative, though it requires a larger initial investment.

Ultimately, the Keihin 34PJ is one of the best carburetor options for the Yamaha Banshee 350, but its benefits are maximized only with proper care and tuning. If you are committed to the project, it will pay off in performance and enjoyment.

Details:

This is a high-performance, two-stroke specific oval slide carb, famously known for its chrome-plated and integrated choke/idle adjuster. Specifications Factory Baseline: Main Jet: #152. Pilot Slow Jet: #55. Dual-Action Choke: Features the classic PJ design where choke knob also acts as idle speed screw twist to adjust.

Pair of Keihin PJ 34mm Flat Slide Carburetors model PJ34/67R For The Yamaha Banshee YFZ350 ATV Up for sale is a Replacement pair carburetors. Features: Oval Slide Design: Increases air velocity for sharper throttle response compared to round slides. Jet Needle: 48-CEG.

part #: 34pj prices

• $105.00-$270.00

specifications carbthrotatv:

• for models: 350, Banshee
• for makes: Yamaha
• brand: Aftermarket Brand Keihin
• mpn: 34pj
• intake: Spigot Od
• pilot jet: 55
• engine type: 2-stroke
• jet needle: 48-ceg
• manufacturer warranty: Yes
• features: Jetting
• total length: 91mm
• machine type: Atv
• material: Aluminum
• float height: 16mm
• vintage part: No
• california prop 65 warning: This Product Contains A Chemical Knows To Them State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov
• choke type: Mechanical
• type: Carburetor
• main jet: 152
• oe/oem part number: 016-039
• throttle valve: Slide Cutaway
• airbox/filter od: 58mm
• country of origin: China
• integrated adjuster: Choke Operates Idle Speed

seller carbthrotatv:

• # reviews: 211
• rating: 98.4%
• city: Sebastian, Florida

general carbthrotatv:

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

offer carbthrotatv:

• started: March 17, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 2

payments carbthrotatv:

• credit card: Discover
• wallet: Paypal
• other

returns carbthrotatv:

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

shipping carbthrotatv:

• service: USPS Ground Advantage
• type: Calculated
• cost: $0.00
• transit: 4-10 Days
• carrier: USPS
• class: Standard

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