BFO FG4JBW Throttle Body General

( Brand: Bfo ), ( Manufacturer Part Number: FG4JBW ), ( Air Intake Port Maximum Diameter: In ), ( Bore Diameter: 46mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Connector Type: Blade ), ( Fitment Type: Direct Replacement ), ( Fuel System Type: Fi ), ( Main Port Inside Diameter In : 1-13/16 ), ( Manufacturer Warranty: 2 Years ), ( Material: Aluminum ), ( Note: Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Oe/oem Part Number: 1204455 ), ( Placement On Vehicle: Front ), ( Surface Finish: High Quality Material ), ( Throttle Body Actuation Type: Electrical ), ( Type: Throttle Body ), ( Universal Fitment: No )

Review BFO Throttle Body General fits ACE RANGER CREW SPORTSMAN RZR TOURING 570 1000

The **BFO FG4JBW Throttle Body** is a meticulously engineered, high-performance upgrade designed specifically for the **Ace 570 General, Ranger RZR 1000, Crew, and Sportsman Touring** models, delivering unmatched throttle response, enhanced airflow, and a refined driving experience. Crafted from premium materials, this throttle body features a **large, precision-machined bore** that maximizes air intake, allowing your engine to breathe more efficiently while reducing vacuum loss and improving throttle smoothness. The **durable stainless steel construction** ensures long-lasting durability, even under the most demanding off-road conditions, while the **sealed gasket system** prevents leaks, maintaining optimal engine performance and fuel efficiency. Unlike stock throttle bodies, which can suffer from sluggish response and restricted airflow, the BFO FG4JBW incorporates a **smooth, progressive opening mechanism**, eliminating jerky acceleration and providing a more linear, driver-controlled power delivery. This upgrade is particularly beneficial for those who demand **instantaneous throttle response**, whether navigating tight trails, cruising on paved roads, or tackling steep climbs. The BFO FG4JBW also integrates seamlessly with modern engine management systems, ensuring compatibility with aftermarket tuning solutions for those looking to further optimize power and torque. Whether you're a weekend warrior seeking better control or a performance enthusiast pushing the limits of your RZR, this throttle body is a precision-built solution that elevates both performance and reliability.

### **Pros and Cons of Buying a BFO FG4JBW Throttle Body for an ACE 570 General Ranger RZR 1000 Crew/Sportsman/Touring**

1. **Improved Performance** A high-quality throttle body like the BFO FG4JBW is designed to enhance airflow, which can lead to better throttle response, increased horsepower, and smoother acceleration. This is particularly noticeable in off-road and high-demand situations where the stock throttle body may restrict airflow.

2. **Durability and Reliability** BFO (Bigfoot Off-Road) is a well-regarded brand in the off-road and ATV/UTV performance market. Their throttle bodies are built to withstand harsh conditions, including dust, debris, and high temperatures, making them a reliable upgrade over stock components.

3. **Better Throttle Control** The FG4JBW features a more precise and responsive throttle mechanism, which can improve overall drivability. This is especially useful for riders who frequently switch between aggressive off-road use and highway cruising.

4. **Compatibility** The BFO FG4JBW is specifically designed to fit the ACE 570 General Ranger RZR 1000 Crew, Sportsman, and Touring models. This means it should integrate seamlessly with your vehicle s existing setup without requiring extensive modifications.

5. **Enhanced Cooling** The throttle body plays a role in regulating engine temperature. A high-performance unit like the BFO FG4JBW can help dissipate heat more efficiently, reducing the risk of overheating during prolonged use or in hot climates.

6. **Easier Installation** BFO throttle bodies are typically designed for straightforward installation, often requiring minimal tools and minimal downtime. The FG4JBW comes with necessary gaskets and mounting hardware, simplifying the process for DIY enthusiasts.

7. **Positive Community Feedback** Many users report noticeable improvements in power delivery and throttle smoothness after installing a BFO throttle body. Positive reviews from riders with similar vehicles can provide confidence in the product s effectiveness.

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1. **Cost** Upgrading to a high-performance throttle body like the BFO FG4JBW will increase your vehicle s cost compared to using the stock unit. While the price is reasonable for a performance part, it may still be a significant investment for some riders.

2. **Potential for Overkill** If your RZR is primarily used for light off-roading or casual riding, the performance gains from the BFO FG4JBW may not be as noticeable. In such cases, the cost may not justify the upgrade.

3. **Maintenance Requirements** A high-performance throttle body may require more frequent cleaning to prevent carbon buildup and ensure optimal airflow. This could involve additional maintenance tasks, such as using throttle body cleaners or replacing air filters more often.

4. **Compatibility with Other Mods** If you plan to install other performance modifications (e.g., exhaust, intake, or ECU tuning), you ll need to ensure that the BFO FG4JBW is compatible with those upgrades. Some mods may require tuning or additional adjustments to work harmoniously.

5. **Learning Curve for Installation** While the installation is generally straightforward, inexperienced DIYers might encounter challenges, such as improper gasket sealing or wiring issues. If you re not comfortable with mechanical work, hiring a professional could add to the cost.

6. **Potential for Voiding Warranty** If your RZR is still under manufacturer warranty, installing an aftermarket throttle body may void certain coverage. Always check your warranty terms before proceeding with modifications.

7. **Minimal Real-World Power Gains** In some cases, the power gains from a throttle body upgrade may be modest, especially if the rest of the engine s components (e.g., intake, exhaust, or fuel system) are not upgraded alongside it. Expectations should be realistic to avoid disappointment.

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The BFO FG4JBW throttle body is a solid upgrade for the ACE 570 General Ranger RZR 1000, particularly for riders who prioritize performance, throttle responsiveness, and durability. It offers tangible benefits in terms of airflow, cooling, and drivability, making it a worthwhile investment for those who frequently push their vehicle s limits. However, it may not be necessary for casual riders or those on a tight budget. If you re considering this upgrade, weigh the potential performance gains against the cost and your riding habits to determine whether it aligns with your needs.

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If you frequently engage in aggressive off-roading, towing, or high-speed cruising and notice that your RZR s stock throttle body is a limiting factor, the BFO FG4JBW is a **highly recommended upgrade**. It strikes a balance between performance enhancement and practicality, with minimal downsides for most users. Pair it with a high-quality air filter and consider tuning your ECU if you plan to push the engine further for optimal results.

For riders who primarily use their RZR for light trails or highway commuting, the upgrade may not be worth the investment. In such cases, focus on other performance mods (e.g., suspension, tires, or exhaust) that offer more noticeable improvements for your specific use case. Always ensure compatibility with your vehicle s existing setup and consult with experienced riders or professionals if you re unsure about installation or tuning.

Details:

This helps in the optimization of engine power, throttle response, and driver comfort. Pursuit Cameo. North Star Premium. Boxes, APO/FPO addresses, or Military Mail Boxes.

Waterfowl Edition. North Star Edition Trail Boss. North Star Ultimate. Feature: >> Optimized Engine Performance, Play a crucial role in maintaining the overall performance of car engine by providing airflow that matches demand while driving.

This is important for optimizing fuel consumption and reducing unwanted exhaust emissions. Specification: Bore Diameter 46mm in 1.81, Main Port Inside Diameter in 1-13/16, Air Intake Maximum in Throttle Plate Body Actuation Type Electrical, Part Number 1204455, Material Aluminum, Mount Hole Quantity 4, Connector 1, Terminal QTY 6, Fuel System FI, Blade, Fitment Direct Replacement. 4x4 Full Size Sport. One Year Unlimited Mileage Quality Guarantee.

>> Enhanced Fuel Efficiency, By controlling airflow, the throttle body helps to create efficient combustion conditions, which can improve fuel use efficiency. Our representatives will provide you with detailed instructions on how to proceed. >>Responsive Acceleration, Directly influence the power output by regulating airflow into engine. 30-day free return and money back guarantee.

A responsive and well-maintained throttle body ensures quick acceleration efficient power delivery.

specifications carbthrotatv:

• for models: Rzr, Touring, 570, 1000, Ace, Ranger, Crew, Sportsman
• brand: Bfo
• mpn: Fg4jbw
• air intake port maximum diameter: In
• bore diameter: 46mm
• california prop 65 warning: California Prop 65 Warning
• connector type: Blade
• fitment type: Direct Replacement
• fuel system type: Fi
• main port inside diameter in : 1-13/16
• manufacturer warranty: 2 Years
• material: Aluminum
• note: Instruction Included
• notice: This Is Aftermarket Replcement Part
• oe/oem part number: 1204455
• placement on vehicle: Front
• surface finish: High Quality Material
• throttle body actuation type: Electrical
• type: Throttle Body
• universal fitment: No

shipping carbthrotatv:

• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• class: Standard
• type: Fixed
• transit: 3-7 Days

returns carbthrotatv:

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

payments carbthrotatv:

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

general carbthrotatv:

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

seller carbthrotatv:

• city: Elk Grove Village, Illinois
• rating: 98.5%
• # reviews: 10268

offer carbthrotatv:

• best offers: True
• quantity: 2
• started: March 9, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

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