MIKUNI 004.280 Carburetor Kit Race Rider 42-8

( Brand: Mikuni ), ( Machine Type: Street Motorcycle ), ( Items Included: Gasket, Mounting Hardware ), ( Manufacturer Part Number: 004.280 ), ( Material: Alloy, Aluminum, Stainless Steel, Steel ), ( Vintage Part: No ), ( California Prop 65 Warning: Anything Can Cause Cancer Not For Sale In Ca ), ( Engine Type: 4-stroke ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Stocking Code: C66 ), ( Manufacturer Warranty: 3 Months ), ( Oe/oem Part Number: 42-8 ), ( Features: Twin ), ( Seller: Member Since 2001 ), ( Country Of Origin: United States ), ( Performance Part: Yes )

Review MIKUNI Harley Carburetor Kit 42-8 Race Low Rider Hd fits EVO X5 FXR 1984–1999

The Mikuni HSR42-8 Carburetor Kit 004.280 FXR, designed specifically for Harley-Davidson motorcycles from the years 1984 to 1999, is a top-tier aftermarket solution for riders seeking optimal engine performance. This carburetor kit is a popular choice among race enthusiasts and those desiring a high-performance upgrade for their Harley-Davidson XL series motorcycles.

The Mikuni HSR42-8 Carburetor Kit comes with four individual carburetors, each featuring a 42mm flat-slide throat that ensures a smooth and consistent air-fuel mixture. These carburetors are designed with a venturi shape that maximizes low-end torque while delivering strong mid-range and top-end power.

The Mikuni carburetors are renowned for their precise metering capabilities, thanks to their unique needle and jet design. The needle provides fine-tuning adjustments for both idle and mid-range fuel mixtures, while the jets offer multiple options for fine-tuning the fuel mixture for various riding conditions.

The Mikuni 004.280 FXR kit includes an FXR intake manifold and four Mikuni carburetor gaskets, ensuring a perfect seal and proper engine compatibility. The kit also comes with a set of fuel lines and fittings, making the installation process as seamless as possible for the rider.

The Mikuni HSR42-8 Carburetor Kit is not only a performance upgrade but also an aesthetic one. The flat-slide design of the carburetors gives the motorcycle a unique and modern look, while the high-quality materials and precise construction exude a sense of durability and reliability.

Installing the Mikuni HSR42-8 Carburetor Kit requires some technical expertise, as it involves the removal of the stock carburetors and the installation of the new components. However, many Harley-Davidson enthusiasts and tuning shops have successfully completed the installation process, reporting significant improvements in engine performance, throttle response, and overall riding experience.

In summary, the Mikuni 004.280 FXR HSR42-8 Carburetor Kit is an excellent choice for Harley-Davidson riders seeking a high-performance upgrade for their motorcycle. Its precise metering capabilities, smooth power delivery, and unique design make it a popular choice among race enthusiasts and those desiring a performance upgrade for their XL series motorcycles.

Mikuni 004.280 FXR Harley Carburetor Kit: A Comprehensive Analysis

The Mikuni 004.280 FXR Harley Carburetor Kit is a popular aftermarket solution for Harley-Davidson FXR models from 1984 to 1999. This kit is designed for race applications and is known for its high performance. In this analysis, we will discuss the key features, advantages, and potential disadvantages of this carburetor kit.

1. 42mm Mikuni Flat Slide Carburetors

2. Velocity Stacks

3. Remote Float Bowls

4. Adjustable Needle and Jet Kits

5. Throttle Cables and Mounting Hardware

6. Air Cleaner and Intake Manifold

1. Improved Air/Fuel Mixture: Mikuni carburetors are renowned for their ability to provide a consistent and precise air/fuel mixture, leading to improved engine performance and power output.

2. Adjustability: The kit offers adjustability through needles and jets, allowing riders to fine-tune the carburetors for their specific engine and riding conditions.

3. Enhanced Throttle Response: Mikuni carburetors are known for their smooth and responsive throttle action, making for a more enjoyable riding experience.

4. Durability: Mikuni carburetors are built to last, with high-quality materials and robust construction that can withstand the demands of racing and high-performance riding.

5. Improved Fuel Economy: By optimizing the air/fuel mixture, this kit can help improve fuel economy, saving riders money in the long run.

1. Complexity: Installing this kit requires a fair amount of mechanical knowledge and skill, as well as specialized tools. This may deter some riders who prefer simpler solutions.

2. Cost: The Mikuni 004.280 FXR Harley Carburetor Kit is pricier than stock or OEM alternatives, which may be a deterrent for some riders on a budget.

3. Maintenance: Mikuni carburetors require more frequent maintenance than stock or OEM alternatives, as they are subjected to more stress and demand.

4. Compatibility: This kit is designed specifically for race applications, which may not be ideal for all riding styles or conditions.

The Mikuni 004.280 FXR Harley Carburetor Kit offers significant performance benefits for Harley-Davidson FXR models, including improved power output, throttle response, and fuel economy. However, its complexity, cost, and maintenance requirements may make it a less attractive option for some riders. Ultimately, the decision to purchase this kit depends on the rider's goals, mechanical expertise, and budget.

If you are a serious racer or performance enthusiast with a good understanding of carburetion and the necessary skills and resources to install and maintain this kit, the Mikuni 004.280 FXR Harley Carburetor Kit is an excellent choice for maximizing the potential of your FXR model. For those with less mechanical expertise or a tighter budget, there may be more accessible and cost-effective alternatives to consider.

part # 004280 prices

• $817.13-$964.27

specifications iodacarb:

• for models: X5, Fxr, Evo
• for makes: Harley
• for years: 1984-1999
• brand: Mikuni
• machine type: Street Motorcycle
• items included: Gasket, Mounting Hardware
• manufacturer part number: 004.280
• material: Alloy, Aluminum, Stainless Steel, Steel
• vintage part: No
• california prop 65 warning: Anything Can Cause Cancer Not For Sale In Ca
• engine type: 4-stroke
• choke type: Mechanical
• type: Carburetor
• stocking code: C66
• manufacturer warranty: 3 Months
• oe/oem part number: 42-8
• features: Twin
• seller: Member Since 2001
• country of origin: United States
• performance part: Yes

payments iodacarb:

• credit card: Visa
• wallet: Paypal
• other

general iodacarb:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Carburetors

offer iodacarb:

• availability: In Stock
• best offers: True
• sold: 0
• quantity: 1
• started: December 27, 2025
• options: Ship-to-home

returns iodacarb:

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

seller iodacarb:

• rating: 99.9%
• # reviews: 31763

shipping iodacarb:

• transit: 4-10 Days
• carrier: USPS
• cost: $24.99
• type: Fixed
• service: USPS Ground Advantage
• class: Standard

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