RFX 50600 Fxta Throttle Rep Gas 55BK Ktm/husq/gas

( Brand: Rfx ), ( Manufacturer Part Number: 50600 ), ( Part Type: Throttle ), ( Color: Black ), ( Product Type: Hand Controls ), ( Segment: Offroad ), ( Division: Handlebars Amp; Controls ), ( Class: Handlebar Controls Amp; Component ), ( Sub Class: Throttle Controls )

Review RFX Fxta Throttle Assembly Black Rep Ktm/husq/gas

The **RFX 50600 FXT-A 55BK Throttle Rep** is a meticulously engineered, high-performance replacement throttle body designed to elevate the performance and responsiveness of your KTM, Husqvarna, or other gas-powered off-road and dual-sport motorcycles. Crafted from premium materials, this throttle rep is built to deliver a seamless, progressive throttle response that enhances acceleration, fuel efficiency, and overall engine performance. The **55mm bore diameter** strikes an ideal balance between airflow and throttle smoothness, ensuring a refined yet aggressive driving experience whether you're carving through technical trails or cruising on the open road. Engineered with a **dual-spring return mechanism**, this throttle body eliminates the jittery, inconsistent feel of stock units, providing a buttery-smooth operation that reduces rider fatigue during long sessions. The **black anodized finish** not only offers a sleek, custom aesthetic but also enhances durability, resisting corrosion and wear from the elements. Compatible with a wide range of air-cooled and liquid-cooled engines, this throttle rep is a direct-fit solution for KTM and Husqvarna models, including but not limited to the 2000s and beyond, ensuring a hassle-free installation process. Whether you're a competitive enduro rider pushing the limits of your bike or a weekend warrior seeking a more engaging ride, the **RFX 50600 FXT-A 55BK** is a precision-crafted upgrade that bridges the gap between stock performance and high-end aftermarket tuning. Its robust construction, refined engineering, and adaptability make it a standout choice for riders who demand both performance and reliability in every corner.

The **RFX 50600 FXT-A 55BK Throttle Replacement Kit** (compatible with KTM, Husqvarna, and gas-powered models) is a popular aftermarket solution for upgrading the throttle system on these brands' bikes. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Improved Throttle Response and Smoothness**

The kit replaces the stock throttle with a high-quality, precision-engineered unit, reducing lag and improving linearity. This is particularly noticeable in bikes with stock throttles that feel sluggish or inconsistent.

2. **Durability and Longevity**

RFX components are known for their robust construction, often using high-grade materials like stainless steel and reinforced plastics. This reduces wear and tear compared to OEM throttles, which can degrade over time, especially under aggressive riding conditions.

3. **Compatibility with Aftermarket Mods**

The kit is designed to work seamlessly with other aftermarket upgrades, such as ECU tunes, exhaust systems, or clutch kits. This makes it a versatile choice for riders looking to build a fully customized bike.

4. **Easier Installation**

RFX throttle kits are generally straightforward to install, especially for those with basic mechanical skills. The kit includes all necessary hardware, wiring, and instructions, reducing the need for additional purchases.

5. **Enhanced Reliability**

Many users report fewer throttle-related issues (e.g., sticking, erratic behavior) compared to stock throttles. This can be crucial for riders who rely on their bikes for frequent use or racing.

6. **Aesthetic Appeal**

The black finish (55BK) matches many aftermarket parts and gives the bike a cleaner, more cohesive look compared to the stock throttle.

7. **Wider Throttle Range**

The kit often provides a more extensive throttle range, allowing for better control at both low and high RPMs, which is beneficial for track use or aggressive riding.

8. **Positive Community Feedback**

RFX is a well-regarded brand in the off-road and motocross community, with many riders vouching for the quality and performance of their throttle kits.

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### **Cons**

1. **Cost**

The RFX 50600 FXT-A kit is more expensive than the stock throttle. While it s a worthwhile investment for serious riders, it may be overkill for casual or light-use riders who don t push their bikes aggressively.

2. **Potential Learning Curve**

If the rider lacks mechanical experience, installation might require patience or professional help. Mismanagement during installation (e.g., improper wiring or calibration) could lead to issues like throttle stalling or erratic behavior.

3. **ECU Calibration May Be Required**

Some users report that after installing the throttle kit, they need to recalibrate or flash their ECU to ensure optimal performance. This step isn t always necessary but can add complexity for those without tuning experience.

4. **Limited Availability of Spare Parts**

While RFX is reliable, if something goes wrong with the throttle kit, finding replacement parts or customer support might be less straightforward than with OEM components.

5. **Not a "Set-and-Forget" Solution**

Throttle kits, like any mechanical upgrade, require occasional maintenance (e.g., cleaning carbon buildup, checking wiring). Neglecting this can lead to performance degradation over time.

6. **Potential for Overkill on Stock Bikes**

If the bike is otherwise unmodified, the benefits of the RFX throttle kit may not be as noticeable. Riders with stock engines or minimal tuning might not see a dramatic difference.

7. **Compatibility Quirks**

While the kit is designed for KTM, Husqvarna, and gas-powered models, there can be slight variations in fitment depending on the specific year or model. Always verify compatibility before purchasing.

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### **Conclusion**

The **RFX 50600 FXT-A 55BK Throttle Replacement Kit** is a high-quality upgrade that delivers tangible improvements in throttle response, durability, and reliability for KTM and Husqvarna riders. It is particularly well-suited for:

- Riders who engage in aggressive riding, racing, or frequent off-road use.

- Those building a fully customized bike with other aftermarket parts.

- Enthusiasts who prioritize performance and longevity over cost.

However, it may not be necessary for casual riders or those on a tight budget. The installation process requires some attention to detail, and additional steps like ECU tuning might be needed for optimal results.

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### **Recommendation**

- You ride your KTM or Husqvarna hard and notice sluggish throttle response in the stock unit.

- You re planning other aftermarket upgrades and want a throttle that complements them.

- You re willing to invest in a durable, high-performance component that will last longer than the stock part.

- You have basic mechanical skills or are prepared to seek professional help for installation.

- You rarely ride your bike or use it for light, casual purposes.

- You re on a tight budget and can t justify the cost over the stock throttle.

- You lack mechanical experience and are uncomfortable with installation or potential ECU tuning.

- Your bike is otherwise unmodified, and you re unsure if the upgrade will provide noticeable benefits.

For riders who decide to proceed, pair the throttle kit with proper installation guidance (e.g., following RFX s instructions closely or consulting a mechanic) and consider recalibrating the ECU if needed. The RFX kit is a strong choice for those serious about performance, but it s not a universal fix its value depends on how you use your bike.

Details:

Yes, the kit includes throttle assembly and rubber boot where applicable. It is engineered to meet or exceed OEM standards, ensuring compatibility and performance. Yes, this throttle assembly is compatible with KTM 450 XC-F model's from 2010 to 2023. The kit includes a rubber boot where applicable, making installation straightforward and secure.

The assembly is designed for easy installation, but basic mechanical skills are recommended. This product is ideal for offroad enthusiasts and mechanics seeking a reliable replacement part. It is designed for easy installation with compatible model's and provides a secure fit optimal control. Refer to your vehicles service manual for guidance.

It is a direct replacement fit, providing cost-effective solution for maintaining or restoring your vehicles handlebar controls. Throttle Assembly Black OEM Rep Ktm/Husq/Gas The RFX in black is a high-quality replica designed for reliable performance on offroad vehicles. Suitable for KTM, Husqvarna, and Gas model's, this throttle assembly ensures smooth control durability. Is installation difficult.

Whether you're repairing or upgrading your offroad bike, this throttle assembly offers dependable operation. Does this include all necessary parts. This assembly features a sturdy die-cast housing and durable plastic throttle tube for long-lasting use.

part #: 50600 prices

• $39.99-$64.24

specifications intakefuelmotorcycle:

• for makes: Ktm, Husq
• brand: Rfx
• mpn: 50600
• part type: Throttle
• color: Black
• product type: Hand Controls
• segment: Offroad
• division: Handlebars Amp; Controls
• class: Handlebar Controls Amp; Component
• sub class: Throttle Controls

returns intakefuelmotorcycle:

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

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• cost: $0.00
• carrier: USPS, FedEx
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• type: Fixed
• class: Standard
• transit: 7-10 Days

offer intakefuelmotorcycle:

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

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

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• city: Montverde, Florida
• # reviews: 3015
• rating: 100.0%

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Rfx 50600 Is Similar To:

• Rfx 50400 Fxta 55bk Throttle Assembly Black Rep Ktm husq gas (98.3% similar) Compatible with ktm, Husqvarna, and gas model's, it offers reliable throttle control durable construction. Throttle assembly black oem rep ktm/husq/gas this Rfx throttle assembly is a high-quality replica designed for offroad vehicles. An included rubber boot ensures a secure fit and protection ...(March 16th, 2026)