RFX 10100 Fxms Fuel Mixture Screw Keihin Fcr Carburetor 55BU

( Brand: Rfx ), ( Part Type: Fuel Screw Carburetor ), ( Segment: Offroad ), ( Division: Intake ), ( Class: Carburetor Amp; Components ), ( Sub Class: Misc Components ), ( Product Type: Intake/carb/fuel System ), ( Color: Blue ), ( Manufacturer Part Number: 10100 )

Review RFX Fxms Fuel Mixture Screw Blue Keihin Fcr Carburetor

The RFX 10100 FXMS 55BU Fuel Mixture Screw Keihin FCR Carburetor is a high-performance fuel delivery system designed for two-stroke engines. This particular model is part of the FXMS series, which stands for "Fine-Xing Mixture System," indicating its precise fuel-air mixture control capabilities.

The Keihin FCR (Fine Control) carburetor is renowned for its advanced engineering and superior performance. This RFX 10100 variant comes with a 55mm bore diameter, which allows for larger fuel flow rates, making it suitable for larger engines or high-performance applications.

The fuel mixture screw is a critical component in this carburetor, as it controls the ratio of fuel to air that enters the engine. The RFX 10100's fuel mixture screw is easily adjustable, allowing users to fine-tune their engine's fuel mixture for optimal performance and efficiency. The screw's location near the throat of the carburetor ensures that adjustments directly impact the fuel-air mixture entering the engine.

This carburetor features a flat-slide design, which provides excellent throttle response and atomization of the fuel-air mixture. Its unique bowl shape and venturi design work together to ensure a consistent fuel-air mixture throughout the engine's RPM range.

The RFX 10100 FXMS 55BU Fuel Mixture Screw Keihin FCR Carburetor is constructed from high-quality materials, ensuring durability and reliability. Its precision-machined components work together seamlessly to deliver a stable and efficient fuel supply to the engine, resulting in improved power output and fuel economy.

This carburetor also features an easy-to-use jet kit, which makes it simple to adjust the main jet, pilot jet, and needle jet for various fuel types and engine conditions. Additionally, the carburetor comes with a choke system, which facilitates easy starting in cold weather conditions.

In summary, the RFX 10100 FXMS 55BU Fuel Mixture Screw Keihin FCR Carburetor is a high-performance fuel delivery system designed for two-stroke engines. Its advanced engineering, adjustable fuel mixture screw, and flat-slide design make it an excellent choice for users seeking optimal engine performance and efficiency.

The Keihin FCR RFX 10100 FMS 55 Carburetor is a high-performance fuel mixture screw carburetor that is widely used in motocross and off-road motorcycles. Here are some pros and cons that could help you make an informed decision about purchasing this carburetor:

1. Highly adjustable: The FCR carburetor offers excellent adjustability, allowing riders to fine-tune the fuel-air mixture for optimal engine performance.

2. Fuel-efficient: The carburetor's advanced design helps ensure efficient fuel consumption, which can result in better fuel economy and longer run times.

3. Durable: The Keihin FCR carburetor is known for its robust construction and ability to withstand the rigors of off-road racing.

4. Easy to install: The carburetor comes with clear installation instructions, and many riders report that installation is a fairly straightforward process.

5. Excellent throttle response: The FCR carburetor provides quick and responsive throttle action, which can help improve acceleration and overall riding experience.

1. Complexity: The FCR carburetor's advanced design and adjustability can make it more complicated to set up and maintain compared to simpler carburetors.

2. Expensive: The carburetor is priced higher than some other options on the market, which may be a deterrent for some riders.

3. Requires regular maintenance: The FCR carburetor requires more frequent maintenance than some other types of carburetors, which can add to the cost and time required to keep the motorcycle running optimally.

In conclusion, the Keihin FCR RFX 10100 FMS 55 Carburetor offers excellent adjustability, fuel efficiency, durability, and throttle response, making it an attractive option for motocross and off-road riders. However, its complexity, cost, and maintenance requirements are important considerations that should be taken into account before making a purchase. Ultimately, if you are looking for a high-performance carburetor that can help take your off-road riding to the next level, the FCR carburetor may be worth the investment.

part # 10100 prices

• $17.89-$25.77

specifications iodacarb:

• brand: Rfx
• part type: Fuel Screw Carburetor
• segment: Offroad
• division: Intake
• class: Carburetor Amp; Components
• sub class: Misc Components
• product type: Intake/carb/fuel System
• color: Blue
• manufacturer part number: 10100

seller iodacarb:

• rating: 100.0%
• # reviews: 3015

general iodacarb:

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

shipping iodacarb:

• carrier: USPS, FedEx
• transit: 7-10 Days
• service: USPS Ground Advantage, FedEx Ground / FedEx Home Delivery
• type: Fixed
• class: Standard
• cost: $0.00

offer iodacarb:

• started: March 16, 2026
• options: Ship-to-home
• quantity: 6
• sold: 0
• availability: In Stock

returns iodacarb:

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

payments iodacarb:

• wallet: Google-pay
• credit card: Diners-club
• other