1. Motorcycle Carburetors Offers
  2. sku: 4753176977090721
  3. MIKUNI TM42/55

MIKUNI TM42-55 Needle Seat TM42/55 SIZE-4.2 786-27001-4.2

fits model: Tm42, Hsr42, Hsr45.

786-27001-4.2 Mikuni Tm42/55 Brand Hsr42 Hsr45 Size 4.2 Needle And Seat

( Brand: Mikuni ), ( Part Type: Seat ), ( Country/region Of Manufacture: Japan ), ( Manufacturer Part Number: TM42/55 )

Review MIKUNI Tm42/55 Size 4.2 Needle And Seat fits TM42 HSR42 HSR45

Introducing the Mikuni TM42/55 HSR42 HSR45 4.2 Needle Seat 786-22001-4.2, a high-performance replacement part designed for Mikuni carburetors. This needle valve assembly is engineered to deliver precise fuel metering for optimal engine performance.

The TM42/55 needle valve is suitable for various applications, including motorcycles, ATVs, and other small engine equipment. The HSR42 and HSR45 versions are specifically designed for Mikuni HSR series carburetors. This needle seat is a crucial component that regulates the fuel flow rate into the carburetor's venturi.

Made from high-quality materials, this needle seat ensures a long-lasting and reliable performance. Its 4.2mm diameter is designed for specific engine requirements, ensuring an ideal fuel-air mixture for efficient combustion.

The Mikuni TM42/55 needle seat 786-22001-4.2 is easy to install, making it an excellent choice for DIY enthusiasts or professional mechanics. Its straightforward design allows for quick replacement, minimizing downtime and getting you back on the road or track as soon as possible.

In summary, the Mikuni TM42/55 HSR42 HSR45 4.2 Needle Seat 786-22001-4.2 is a precision engineered component that guarantees excellent fuel metering and optimal engine performance for your Mikuni carbureted engine. Whether you're a seasoned mechanic or a DIY enthusiast, this needle seat is a reliable and effective solution for maintaining or upgrading your Mikuni carburetor system.

The Mikuni TM42/55 HSR42 HSR45 4.2 needle jet carburetor (part number 786-27001-4.2) is a popular choice among motorcycle enthusiasts for its performance and versatility. Here are some pros and cons to help you make an informed decision about purchasing this carburetor:

Pros:

1. High Performance: This carburetor is known for its excellent air/fuel mixture delivery, resulting in optimal engine performance. It is suitable for high-performance applications and can be used to replace stock carburetors for improved throttle response and power.

2. Adjustability: The Mikuni TM42/55 HSR42 HSR45 4.2 needle jet carburetor offers a high degree of adjustability, allowing users to fine-tune the air/fuel mixture for their specific engine and riding conditions. This can lead to improved fuel economy, reduced emissions, and better overall engine performance.

3. Durability: Mikuni carburetors are known for their durability and reliability, making them a popular choice among motorcycle enthusiasts. The TM42/55 HSR42 HSR45 4.2 needle jet carburetor is no exception, with a robust design and high-quality materials that can withstand the rigors of regular use.

4. Wide Application: This carburetor is suitable for a wide range of motorcycle applications, making it a versatile choice for many riders. It can be used on various makes and models of motorcycles, from small displacement bikes to high-performance sportbikes.

Cons:

1. Complexity: Carburetors can be complex to set up and tune, and the Mikuni TM42/55 HSR42 HSR45 4.2 needle jet carburetor is no exception. It may require some expertise and experience to get the best performance out of this carburetor, which could be a deterrent for some riders.

2. Cost: Compared to other types of fuel delivery systems, such as fuel injection, carburetors can be more expensive to purchase and maintain. The Mikuni TM42/55 HSR42 HSR45 4.2 needle jet carburetor is no exception, with a higher price tag than some stock carburetors or other aftermarket options.

3. Maintenance: Carburetors require regular maintenance, including cleaning and adjusting the float levels, jet sizes, and other components. This can be time-consuming and may require some mechanical knowledge and tools.

Ending Conclusion:

The Mikuni TM42/55 HSR42 HSR45 4.2 needle jet carburetor (part number 786-27001-4.2) is a high-performance, adjustable, and durable carburetor that offers excellent value for motorcycle enthusiasts. While it may require some expertise and investment to get the best performance out of this carburetor, its versatility, reliability, and performance benefits make it a worthwhile investment for many riders.

Recommendation:

If you are a motorcycle enthusiast looking to upgrade your bike's fuel delivery system, the Mikuni TM42/55 HSR42 HSR45 4.2 needle jet carburetor is an excellent choice. Its high-performance capabilities, adjustability, and durability make it a popular choice among riders looking for improved throttle response, power, and overall engine performance. However, be prepared for the potential complexity and maintenance requirements of a carburetor, and consider your mechanical knowledge and resources before making a purchase.

part # tm4255 prices

  • $17.40-$30.11

specifications iodacarb:

  • for models: Tm42, Hsr42, Hsr45
  • brand: Mikuni
  • part type: Seat
  • country/region of manufacture: Japan
  • manufacturer part number: TM42/55

shipping iodacarb:

  • class: Economy
  • service: Economy
  • transit: 4-9 Days
  • type: Fixed
  • cost: $0.00

returns iodacarb:

  • policy: No Returns

offer iodacarb:

  • options: Ship-to-home
  • started: May 3, 2025
  • sold: 0
  • availability: In Stock
  • quantity: 3

general iodacarb:

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

seller iodacarb:

  • rating: 100.0%
  • # reviews: 302

payments iodacarb:

  • credit card: Discover
  • other
  • wallet: Google-pay
for models: tm42, hsr42, hsr45, part type: seat, country/region of manufacture: japan,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery > carburetors, sku: 4753176977090721,

Mikuni TM42-55 Is Similar To:

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5 offers $17.40–$30.11 USD
  • Offer #1: $17.40 price + $8.00 delivery = $25.40* total. Includes the following Genuine Mikuni Part Number.+$8.00 shipping
  • Offer #2: $30.11 price + free delivery = $30.11* total. MANUFACTURER PART NUMBERTm42/32. HSR42 LONG IDLE SRCEW.FREE SHIPPING
  • Offer #3: $21.23 price + free delivery = $21.23* total. MANUFACTURER PART NUMBER . MATERIALMade Of Viton.FREE SHIPPING
  • Offer #4: $13.85 price + free delivery = $13.85* total. Fit for Mikuni HSR Idle Adjuster Screw Kit - Long including following parts. Fit for Mikuni HSR42 flatslide carburetors.FREE SHIPPING
  • Offer #5: $16.95 price + $8.75 delivery = $25.70* total. NEW NEVER INSTALLED MIKUNI HSR 4.2 NEEDLE & SEAT.+$8.75 shipping