1. Carburetors & Throttlebodies ATV For Sale
  2. sku: 17757286926542773
  3. LECTRON 70-45G11

LECTRON 70-45G11 Carburetor Alc 44MM

fits model: Yfz450, Nitro. make: Yamaha.

70-45g11 Lectron Carburetor Yamaha Yfz450 Setup For Alc And Nitro 44mm New

( Brand: Lectron ), ( Manufacturer Part Number: 70-45G11 ), ( Machine Type: Atv ), ( Material: Aluminum ), ( Vintage Part: No ), ( Engine Type: 4-stroke ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Features: Dual Power Jet ), ( Universal Fitment: Yes )

Review LECTRON Carburetor Yamaha Setup Alc And 44mm New fits NITRO YFZ450

The **Lectron 70-45G11 Carburetor** is a meticulously engineered, high-performance replacement for the stock carburetor found on Yamaha s legendary YFZ450R, specifically optimized for use with **Alc Nitro 44mm** fuel systems. Designed with precision and built to elevate the performance of your off-road machine, this carburetor stands out as a superior alternative to OEM components, offering enhanced throttle response, improved fuel efficiency, and a more refined power delivery curve. Crafted from high-grade materials, the Lectron 70-45G11 features a robust **aluminum body** with a **piston-style float bowl**, ensuring durability and resistance to wear under demanding conditions. Its **precision-machined internals** including the **needle and jet assembly** are engineered to deliver a consistent and optimized fuel-air mixture, reducing hick-ups and maximizing power output across the entire RPM range. The carburetor s **adjustable throttle stop** allows for fine-tuning of low-end torque, while its **sealed gasket system** prevents leaks and ensures a tight, reliable fit with the engine bay. Whether you're tackling rugged trails, competing in motocross, or pushing the limits of your YFZ450R in the dirt, this carburetor is built to handle the rigors of high-performance racing while maintaining ease of maintenance. With its **compatibility with Alc Nitro 44mm fuel systems**, the Lectron 70-45G11 is an ideal choice for riders seeking a balance of power, reliability, and adaptability, making it a standout upgrade for those who demand nothing less than exceptional performance from their Yamaha.

### Pros and Cons of buying a **Lectron 70-45G11 Carburetor for Yamaha YFZ450 (Alcohol/Nitro, 44mm)**

#### **Pros**

1. **Compatibility with Alcohol/Nitro Fuel**

The Lectron 70-45G11 is designed to handle high-octane fuels like alcohol and nitro, which are common in off-road racing. This makes it a strong choice for performance applications where traditional gasoline carburetors may struggle.

2. **Improved Performance and Power**

Lectron carburetors are known for delivering better throttle response, smoother acceleration, and increased horsepower compared to stock units. The 45mm size is a popular upgrade for the YFZ450, offering a balance between airflow and drivability.

3. **Durability and Build Quality**

Lectron carburetors are constructed with high-quality materials, including stainless steel and precision-machined components. This enhances their longevity, especially under high-RPM and aggressive racing conditions.

4. **Adjustability and Tuning Flexibility**

The Lectron 70-45G11 features adjustable jets and needle assemblies, allowing for fine-tuning to match different fuel mixtures, engine conditions, and track demands. This is crucial for optimizing performance in nitro/alcohol applications.

5. **Reputation for Reliability in Racing**

Lectron is a well-regarded brand in the off-road and racing community, particularly for its carburetors that perform well in high-stress environments. Many racers trust Lectron for its consistency and performance.

6. **Easier Installation and Maintenance**

Compared to some aftermarket carburetors, Lectron units are relatively straightforward to install, especially for those familiar with carburetor work. They also come with clear instructions and are often backed by good customer support.

7. **Cost-Effective Upgrade**

While not the cheapest option, the Lectron 70-45G11 offers a good balance between price and performance. It is often more affordable than high-end brands like Keihin or Mikuni while still delivering significant gains.

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#### **Cons**

1. **Learning Curve for Tuning**

Since the carburetor is highly adjustable, beginners may struggle with proper setup, leading to inconsistent performance or even engine damage if misadjusted. Proper tuning requires knowledge of fuel-air ratios, needle profiles, and engine requirements.

2. **Potential for Fuel System Issues**

Alcohol and nitro fuels are corrosive and can degrade rubber components in the carburetor over time. Some users report that seals or gaskets may wear out faster than with gasoline, requiring more frequent maintenance.

3. **Limited Stock Availability**

Lectron carburetors, while popular, may not always be in stock at local dealers. This can lead to delays in ordering, especially if you re racing and need the part quickly.

4. **Compatibility with Stock Components**

Upgrading to a 45mm carburetor may require modifications to the intake system, throttle body, or fuel lines to ensure proper airflow and vacuum. Some users report needing to replace stock components (e.g., throttle cables, intake pipes) for optimal performance.

5. **Potential for Over-Powering the Engine**

If not properly tuned, a larger carburetor like the 70-45G11 can cause excessive fueling, leading to rough idling, stalling, or even engine flooding especially in alcohol/nitro setups where fuel delivery is critical.

6. **Cost of Additional Upgrades**

To fully realize the potential of the Lectron carburetor, you may need to invest in complementary upgrades, such as a high-flow air filter, upgraded exhaust, or a performance clutch. These additional costs can add up.

7. **Brand-Specific Support**

While Lectron has a good reputation, support and warranty service may not be as extensive as larger manufacturers like Keihin or Yamaha. Some users report slower response times for warranty claims or technical issues.

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### **Conclusion and Recommendation**

The **Lectron 70-45G11 carburetor** is an excellent choice for a **Yamaha YFZ450 running alcohol or nitro**, particularly if you re looking to significantly boost performance while maintaining reliability. Its ability to handle high-octane fuels, adjustability, and durability make it a strong contender for racers and enthusiasts who prioritize power and tuning flexibility.

However, it is **not a plug-and-play solution**. Success with this carburetor depends on proper installation, fuel mixture tuning, and potentially additional modifications to the intake and exhaust systems. Beginners should be prepared to invest time in learning how to tune it correctly or seek guidance from experienced racers or tuners.

**If you:**

- Are running **alcohol or nitro** and need a carburetor that can handle it,

- Want a **noticeable power increase** over stock,

- Are willing to **learn or work with a tuner** to optimize settings,

- Can afford **potential additional upgrades** (intake, exhaust, etc.),

**then the Lectron 70-45G11 is a solid recommendation.**

**If you:**

- Are a **complete beginner** with limited mechanical experience,

- Want a **simple, no-fuss upgrade** without tuning hassles,

- Are running **gasoline only** and don t need the extra power,

- Prefer **brand-name support** with broader availability,

**you may want to consider alternatives like a **Yamaha OEM 45mm carburetor (if stock is still viable), a Keihin or Mikuni aftermarket carburetor, or a smaller Lectron model (e.g., 70-40G11) for a gentler transition.**

Ultimately, the Lectron 70-45G11 is one of the best **alcohol/nitro-compatible carburetors** for the YFZ450, but its effectiveness hinges on proper setup and maintenance. For the best results, pair it with a **high-quality fuel system, proper fuel mixture, and a tuned engine setup.**

Details:

EQUALS 4 GALLONS ALCOHOL AND 1 GALLON NITROMETHANE IN A 5 PAIL MAKES IT 20% NITRO 80%. The LECTRON Carburetor Yamaha YFZ450 setup is a high-performance part made of aluminum, designed for ATV with 4-stroke engine type. It features a 44mm barrel count and dual power jet for Alcohol Nitro methane enhanced fuel delivery. THIS LECTRON 44MM CARBURETOR IS NEW AND DIALED IN FOR 80% ALCOHOL 20% NITROMETHANE.

With universal fitment and a mechanical choke type, this LECTRON carburetor is reliable powerful choice for those seeking to enhance their ATV performance on the track or in field.

part #: 7045g11 price

  • $750.00

specifications carbthrotatv:

  • for models: Yfz450, Nitro
  • for makes: Yamaha
  • brand: Lectron
  • mpn: 70-45g11
  • machine type: Atv
  • material: Aluminum
  • vintage part: No
  • engine type: 4-stroke
  • choke type: Mechanical
  • type: Carburetor
  • features: Dual Power Jet
  • universal fitment: Yes

offer carbthrotatv:

  • quantity: 1
  • sold: 0
  • started: June 8, 2026
  • options: Ship-to-home
  • availability: In Stock

returns carbthrotatv:

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

payments carbthrotatv:

  • credit card: Mastercard
  • wallet: Google-pay
  • other

seller carbthrotatv:

  • city: Apache Junction, Arizona
  • rating: 100.0%
  • # reviews: 437

general carbthrotatv:

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

shipping carbthrotatv:

  • transit: 4-10 Days
  • class: Standard
  • cost: $9.52
  • carrier: USPS
  • service: USPS Ground Advantage
  • type: Calculated
for models: yfz450, nitro, for makes: yamaha, machine type: atv, vintage part: no, engine type: 4-stroke, choke type: mechanical, type: carburetor, features: dual power jet, universal fitment: yes,
category: atv parts > atv, side-by-side utv parts accessories > air intake fuel delivery > carburetors, material: aluminum, sku: 17757286926542773,
Lectron 70-45G11 Is Similar To:
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1 offer $750.00 USD
  • New. Offer #1 priced at $750.00 + $9.52 shipping estimate = $759.52* total. THE LAST BIKE I BUILT WITH THIS STYLE CARBURETOR WAS PUSHING 78HP. The LECTRON Carburetor Yamaha YFZ450 setup is a high-performance part made of aluminum, designed for ATVs with a 4-stroke engine type.+$9.52 shipping

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