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  3. YAMAHA 5TJ1

YAMAHA 5TJ1 Keihin Flat Slide Carburetor Fcr

fits model: Wr450f, Yz450f, Mx, Cr. make: Yamaha. year: 2003–2005.

5tj1 Yamaha 03 Wr450f Keihin Flat Slide Cr Carburetor Fcr Mx Fits Yz450f 05 And Below

( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle, Steel Frame Wr450f And Yz450f 2005, 2004, 2003 ), ( Manufacturer Part Number: 5TJ1 ), ( Material: Aluminum ), ( Engine Type: 4-stroke ), ( Type: Carburetor ), ( Oe/oem Part Number: 5tj-14916-d1-00 ), ( Manufacturer Warranty: No ), ( Features: Jetting ), ( Country/region Of Manufacture: Japan ), ( Performance Part: Yes )

Review YAMAHA Keihin Flat Slide Carburetor Fcr And Below fits WR450F YZ450F MX CR 2003–2005

Yamaha 5TJ1 03 WR450F Keihin FCR Flat Slide Carburetor (MX/YZ450F 2005)

The Yamaha 5TJ1 03 WR450F Keihin FCR Flat Slide Carburetor is a high-performance component designed specifically for the Yamaha WR450F and YZ450F motorcycles manufactured in 2005. This carburetor is an upgrade over the stock unit, offering improved power delivery, enhanced fuel efficiency, and easier tuning capabilities.

The Keihin FCR (Flat Slide Carburetor) features a flat slide design that results in smoother throttle response and better fuel atomization. The needle jet and pilot jet are adjustable, allowing riders to fine-tune the fuel mixture to their specific riding conditions and preferences. This results in optimized engine performance, ensuring maximum power output and efficient fuel consumption.

The carburetor's body is made from lightweight aluminum, reducing the overall weight of the motorcycle. Additionally, the design includes an integrated throttle position sensor, which provides real-time data to the engine management system for precise fuel injection and ignition timing.

The Keihin FCR Flat Slide Carburetor comes with a new gasket set, making the installation process quick and straightforward. The kit also includes a set of jets and needles for easy tuning, as well as a detailed instruction manual to guide users through the installation and adjustment process.

In summary, the Yamaha 5TJ1 03 WR450F Keihin FCR Flat Slide Carburetor is a premium aftermarket component that offers significant performance gains over the stock unit. Its flat slide design, adjustable jets, and lightweight aluminum construction make it a popular choice among off-road enthusiasts seeking improved power delivery, enhanced fuel efficiency, and easier tuning capabilities.

Pros and Cons of Buying a Yamaha 5TJ1 03 WR450F Keihin FCR MX/YZ450F Carburetor

Introduction:

The Yamaha 5TJ1 03 WR450F Keihin FCR MX/YZ450F Carburetor is a popular aftermarket upgrade for off-road motorcycles. This carburetor is known for its flat slide design, which provides better throttle response and fuel efficiency compared to the stock carburetor. In this article, we will discuss the pros and cons of buying this carburetor to help you make an informed decision.

Pros:

1. Improved Throttle Response: The flat slide design of the Keihin FCR carburetor allows for better throttle response, making the bike more responsive and agile.

2. Increased Power: The carburetor delivers a smoother and more consistent power delivery throughout the rev range, resulting in an increase in power and torque.

3. Adjustability: The carburetor offers a wide range of adjustability, allowing riders to fine-tune the fuel mixture for different riding conditions and personal preferences.

4. Durability: Keihin carburetors are known for their durability and reliability, making them a popular choice among off-road racers and enthusiasts.

5. Easy Installation: The installation process is relatively straightforward, and many aftermarket kits include all the necessary hardware and instructions.

Cons:

1. Cost: The Keihin FCR carburetor is more expensive than the stock carburetor, which may be a deterrent for some riders.

2. Complexity: The adjustability features of the carburetor can be overwhelming for some riders, requiring a good understanding of carburetor tuning principles.

3. Maintenance: The carburetor requires regular maintenance, including jetting adjustments and fuel filter changes, to ensure optimal performance.

4. Compatibility: The carburetor may not be compatible with all motorcycles, and it may require additional modifications to work properly.

Conclusion:

The Yamaha 5TJ1 03 WR450F Keihin FCR MX/YZ450F Carburetor offers significant improvements in throttle response, power delivery, and adjustability compared to the stock carburetor. However, it comes with a higher cost, complexity, and maintenance requirements. If you're an off-road enthusiast looking for improved performance and are willing to invest in the learning curve and maintenance, this carburetor is an excellent choice.

Recommendation:

If you're considering purchasing the Yamaha 5TJ1 03 WR450F Keihin FCR MX/YZ450F Carburetor, we recommend doing thorough research on the installation process, compatibility, and tuning principles. You may also consider purchasing a carburetor tuning kit or seeking the help of a professional tuner to ensure optimal performance. Additionally, be prepared for the higher cost, complexity, and maintenance requirements associated with this aftermarket upgrade.

specifications iodacarb:

  • for models: Wr450f, Yz450f, Mx, Cr
  • for makes: Yamaha
  • for years: 2003-2005
  • machine type: Dual Sport Motorcycle, Off-road Motorcycle, Steel Frame Wr450f And Yz450f 2005, 2004, 2003
  • manufacturer part number: 5TJ1
  • material: Aluminum
  • engine type: 4-stroke
  • type: Carburetor
  • oe/oem part number: 5tj-14916-d1-00
  • manufacturer warranty: No
  • features: Jetting
  • country/region of manufacture: Japan
  • performance part: Yes

general iodacarb:

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

payments iodacarb:

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

shipping iodacarb:

  • class: Expedited
  • carrier: USPS
  • service: USPS Priority Mail
  • transit: 5-11 Days
  • type: Calculated
  • cost: $0.00

returns iodacarb:

  • policy: No Returns

offer iodacarb:

  • availability: In Stock
  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • started: June 19, 2025
  • best offers: True

seller iodacarb:

  • rating: 100.0%
  • # reviews: 1523
for models: wr450f, yz450f, mx, cr, for makes: yamaha, for years: 2003-2005, machine type: dual sport motorcycle, off-road motorcycle, steel frame wr450f and yz450f 2005, 2004, 2003, engine type: 4-stroke, type: carburetor, oe/oem part number: 5tj-14916-d1-00, manufacturer warranty: no, features: jetting, country/region of manufacture: japan, performance part: yes,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery > carburetors, material: aluminum, sku: 5683566773420633,

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