1. Carburetors & Throttlebodies ATV For Sale
  2. sku: 17334036015523861
  3. MIKUNI 2GU-01

MIKUNI 2GU-01 Nos Carburetors

fits model: Yfz350, 350, Banshee. make: Yamaha. year: 1987–2006.

2gu-01 Mikuni Nos Yamaha Banshee 350 Genuine Carburetors Pair 1987-2006 Yfz350

( Brand: Mikuni ), ( Manufacturer Part Number: 2GU-01 ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Machine Type: Atv ), ( Oe/oem Part Number: 2gu-14101-01-00, 2gu-14102-01-00 ), ( Country Of Origin: Japan )

Review MIKUNI Nos Yamaha Genuine Carburetors Pair fits BANSHEE YFZ350 350 1987–2006

The **Mikuni 2GU-01 NOS YFZ350 Carburetors** are a meticulously crafted, high-performance upgrade designed to transform the stock carburetion system of Yamaha s iconic **Banshee 350 (YFZ350) models** from 1987 through 2006 into a more responsive, throttle-responsive, and power-dense machine. Engineered with precision by Mikuni, a brand synonymous with reliability and performance in the motorcycle industry, these **NOS (New Old Stock) carburetors** represent a direct replacement for the original units while incorporating subtle yet impactful refinements that enhance both drivability and power output. The **2GU-01** designation signifies a carefully tuned version of Mikuni s **2GU** carburetor family, which is renowned for its smooth idle, crisp throttle response, and ability to handle the demands of modern fuel blends without the need for excessive adjustments. These carburetors feature a **38mm bore**, a size that strikes an optimal balance between low-end torque and mid-range acceleration, making them ideal for the YFZ350 s naturally aspirated, air-cooled engine. The **NOS designation** ensures that these carburetors are not only authentic to the original specifications but also in pristine, unused condition, free from wear or modification, allowing for a clean, out-of-the-box installation that preserves the integrity of the Banshee s classic design while unlocking its full potential.

Under the hood, the **Mikuni 2GU-01 NOS** carburetors stand out for their **precision-engineered internals**, including a **high-quality jet kit** that includes the main jet, pilot jet, and idle mixture screw, all calibrated to work seamlessly with the YFZ350 s fuel system. The **needle and seat assembly** is designed to provide a progressive power delivery, ensuring that the engine transitions smoothly from idle to full throttle without the harshness often associated with stock carburetors. The **floating bowl design** allows for easy maintenance and cleaning, a critical feature for riders who push their Banshee to its limits or those who frequently ride in varied conditions. Additionally, the **sealed gaskets and O-rings** included with the carburetors guarantee a secure, leak-free installation, preventing fuel leaks and ensuring consistent performance. For riders who appreciate the blend of nostalgia and performance, these carburetors offer a subtle yet noticeable upgrade over the stock units, delivering a more refined throttle response, improved acceleration, and a slight boost in horsepower often in the range of **5-10%**, depending on tuning and engine condition without sacrificing the Banshee s classic character.

Beyond their performance benefits, the **Mikuni 2GU-01 NOS** carburetors are also a testament to the enduring quality of Mikuni s craftsmanship. Each carburetor is built to exacting standards, with **chrome-plated internals** that resist corrosion and wear, ensuring longevity even with regular use. The **smooth-bore throttle body** reduces friction, allowing for quicker throttle reaction, while the **precision-machined jets** ensure optimal fuel-air mixture at all engine speeds. These carburetors are particularly well-suited for riders who enjoy a mix of **street riding, track use, or light customization**, as they provide a noticeable improvement in power delivery without requiring extensive modifications to the engine or exhaust system. Whether installed as part of a full rebuild or as a standalone upgrade, the **Mikuni 2GU-01 NOS** carburetors offer a straightforward yet effective way to breathe new life into a Yamaha YFZ350, restoring its performance to factory specifications while allowing for subtle tuning to match modern riding preferences. For enthusiasts who value both authenticity and performance, these carburetors represent the perfect balance honoring the Banshee s legacy while pushing it forward into the realm of enhanced handling and excitement.

### Pros and Cons of Buying Mikuni 2GU-01 NOS (New Old Stock) Carburetors for a 1987-2006 Yamaha Banshee 350/YFZ350

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#### **Pros**

1. **Authentic Fitment and Performance**

The Mikuni 2GU-01 carburetors are the original equipment (OEM) carb for the Yamaha Banshee 350/YFZ350, meaning they are designed specifically for this engine. This ensures proper fitment, throttle response, and power delivery without the need for extensive modifications. They maintain the stock tuning characteristics that Yamaha intended, which can be important for reliability and drivability.

2. **High-Quality Materials and Craftsmanship**

Mikuni is a well-respected brand known for producing durable, precision-engineered carburetors. NOS units are often in excellent condition, having been stored properly and handled with care. The float bowls, jets, and needle valves are typically well-maintained, reducing the risk of leaks or poor performance due to wear.

3. **Reliability and Longevity**

Since these are OEM parts, they are built to last under normal operating conditions. If the unit is in good condition (no cracks, intact seals, and clean internals), it will likely provide years of trouble-free service. This is particularly valuable for older bikes where reliability is a priority.

4. **Ease of Installation and Maintenance**

Installing OEM carbs is straightforward, especially if you re familiar with carburetor work. They require minimal adjustments to function correctly, and Mikuni carbs are known for being easier to tune than some aftermarket alternatives. This makes them a practical choice for riders who prefer simplicity.

5. **Preservation of Stock Feel**

If you re running a stock or lightly modified bike, NOS Mikuni carbs will help preserve the original driving experience. They won t drastically alter the throttle response or power delivery, which can be preferable for daily riding or track use where predictability is key.

6. **Availability of Replacement Parts**

Mikuni carbs are widely available, and replacement parts (jets, gaskets, seals, etc.) are easy to source. This means you won t be stuck if a part wears out or needs replacement. The aftermarket also supports these carbs with upgrades like larger jets or performance kits if you decide to modify them later.

7. **No Need for Major Engine Modifications**

Since these are stock carbs, you won t need to adjust the engine s compression ratio, camshaft timing, or exhaust setup to accommodate them. This makes them a low-risk option for those who want to keep their engine stock or near-stock.

8. **Aesthetic Appeal**

NOS Mikuni carbs look clean and original, which can be appealing if you re running a restored or stock-looking bike. They blend seamlessly with the factory setup, enhancing the bike s vintage appearance.

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#### **Cons**

1. **Limited Power Potential**

The 2GU-01 carburetors are tuned for stock power levels, which for the Banshee/YFZ350 typically means around 25-30 horsepower. If you re looking to significantly increase power (e.g., for racing or heavy modification), these carbs will be a bottleneck. You ll likely need to upgrade to larger carbs (e.g., 2GU-02 or aftermarket options like Keihin or Dell Orto) to unlock more power.

2. **Potential for Wear or Damage in NOS Units**

While NOS units are supposed to be in good condition, there s always a risk that they ve been mishandled or exposed to moisture over the years. Some units may have minor wear on the float needles, cracked bowls, or clogged jets. It s wise to inspect them thoroughly before purchasing, including cleaning and testing for leaks.

3. **No Performance Upgrades Included**

These are stock carbs, so they won t come with performance-enhancing features like larger jets, upgraded needles, or high-flow passages. If you want to tweak the carb for better throttle response or fueling, you ll need to purchase separate performance kits or jets.

4. **Sensitivity to Fuel Quality**

Mikuni carbs, like all carburetors, can be finicky with low-quality fuel. If you re running cheap or ethanol-blended fuel, you may experience clogging, poor idle, or hesitation. This is a common issue with carbureted engines and not specific to the Mikuni 2GU-01, but it s worth noting.

5. **Maintenance Requirements**

Carburetors require regular maintenance to function properly. This includes cleaning the jets, checking the float level, and ensuring the throttle body is free of carbon buildup. Neglecting maintenance can lead to poor performance, stalling, or even damage to the engine. This is more involved than modern fuel-injected systems.

6. **Potential for Leaks or Sealing Issues**

Over time, the gaskets and seals in carburetors can dry out or crack, leading to fuel leaks or air leaks. This can cause rough idling, poor acceleration, or even fuel waste. Replacing seals and gaskets is a simple fix, but it s something to be aware of during ownership.

7. **Less Durability Than Modern Alternatives**

While Mikuni carbs are durable, they re not as robust as some modern carburetors or fuel-injected systems. They can be more susceptible to damage from rough riding, overheating, or neglect. If you re planning to push the bike hard (e.g., track use), you may need to monitor them more closely.

8. **Limited Customization**

If you re looking to heavily customize your bike s performance, these carbs offer limited flexibility. You ll likely need to pair them with other modifications (e.g., exhaust, camshaft, or fuel system upgrades) to see significant gains, which can add complexity and cost.

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### **Conclusion**

The Mikuni 2GU-01 NOS carburetors are an excellent choice for Yamaha Banshee 350/YFZ350 owners who prioritize **authenticity, reliability, and ease of use**. They are ideal for riders who want to maintain the stock feel of their bike, preserve its original performance, and avoid the hassle of tuning aftermarket carbs. These carbs are also a great option if you plan to keep your engine stock or lightly modified, as they won t require major adjustments to the rest of the bike.

However, if you re looking to **maximize power, customize your bike aggressively, or run the engine at high RPMs**, these carbs will quickly become a limiting factor. In that case, you may want to consider larger OEM carbs (like the 2GU-02) or aftermarket options designed for performance tuning.

For most **daily riders, cruisers, or those who enjoy the classic feel of a carbureted engine**, the 2GU-01 NOS carbs are a solid, low-risk investment. Just be sure to inspect them thoroughly for condition and perform regular maintenance to ensure they continue to perform reliably.

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### **Recommendation**

**Buy the Mikuni 2GU-01 NOS carburetors if:**

- You want to restore or maintain your Banshee/YFZ350 to stock specifications.

- You prioritize reliability and ease of use over maximum power.

- You re comfortable with basic carburetor maintenance and tuning.

- You plan to keep your engine stock or make only minor modifications.

- You appreciate the original feel and performance of the bike.

**Avoid or consider alternatives if:**

- You re planning to heavily modify the engine or exhaust system for more power.

- You want to explore aftermarket performance tuning options.

- You re unsure about the condition of the NOS units and cannot inspect them thoroughly.

- You prefer the simplicity of fuel injection or the higher power potential of larger carbs.

**Final Verdict:** For the average rider seeking a **simple, reliable, and authentic** carburetor solution for their Yamaha Banshee 350/YFZ350, the Mikuni 2GU-01 NOS carbs are a **strong recommendation**. Just ensure you purchase from a reputable seller, inspect them carefully, and maintain them properly to get the most out of them.

Details:

Includes: Mikuni Pals-Tech Hoses. Note on Hoses: These units are equipped with genuine Mikuni Pals-Tech hoses. These are the only lines recommended by Mikuni for their OEM carburetors, known superior fuel resistance and longevity compared to standard vinyl. Year Range: 1987 -2006.

They feature original factory QC ink stamps A, B, Z and paint markings, confirming they have never been installed or run. These are genuine OEM units, not aftermarket replicas. Model: Banshee 350 YFZ350. NOS Yamaha Banshee 350 Genuine Mikuni Carburetors 2GU-01 Pair 1987 2006 YFZ350, This is a New Old Stock matched pair of factory VM26 carburetors for.

The set includes both the primary choke-side carburetor and slave unit. Item comes ONLY with what is pictured, NO other materials available. Need it fast. Perfect for a high-end restoration or reliable performance build.

Brand: Mikuni OEM Yamaha. The intake side carries the 2GU 01 identification stamps.

specifications carbthrotatv:

  • for models: Yfz350, 350, Banshee
  • for makes: Yamaha
  • for years: 1987-2006
  • brand: Mikuni
  • mpn: 2gu-01
  • choke type: Mechanical
  • type: Carburetor
  • machine type: Atv
  • oe/oem part number: 2gu-14101-01-00, 2gu-14102-01-00
  • country of origin: Japan

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general carbthrotatv:

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

offer carbthrotatv:

  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
  • started: April 22, 2026
  • sold: 0

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  • rating: 99.3%
  • city: Athens, Georgia
  • # reviews: 17133

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  • type: Fixed

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for models: yfz350, 350, banshee, for makes: yamaha, for years: 1987-2006, choke type: mechanical, type: carburetor, machine type: atv, oe/oem part number: 2gu-14101-01-00, 2gu-14102-01-00, country of origin: japan,
category: atv parts > atv, side-by-side utv parts accessories > air intake fuel delivery > carburetors, sku: 17334036015523861,
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