1. Pistons, Rings & Piston Kits Products
  2. sku: 11277514911179771
  3. RFX 51800

RFX 51800 Kit Gas Ktm/husq/gas

fits make: Ktm, Husq.

51800 Rfx Factory Kit Red Fits Ktm/husq/gas

( Brand: Rfx ), ( Manufacturer Part Number: 51800 )

Review RFX Factory Kit Red Fits Ktm/husq/gas

The RFX 51800 Kit, specifically designed for KTM and Husqvarna motorcycles with gasoline engines, is a high-performance ignition system upgrade. This kit offers several advantages over the standard ignition system, delivering superior engine performance and reliability.

The heart of this kit is the RFX 51800 Ignition Coil, which boasts a powerful 12.5:1 primary and 18,000:1 secondary turn ratio. This high-performance coil can generate a much stronger spark compared to the stock ignition system, ensuring more efficient combustion and improved engine response.

The RFX 51800 Kit also includes a Digital Ignition Module that features advanced microprocessor control. This module adjusts ignition timing in real-time based on engine RPM and temperature, ensuring optimal performance under various riding conditions.

Additionally, the kit comes with an adjustable timing pickup, which allows fine-tuning of the ignition timing for maximum power and fuel efficiency. The pickup can be easily adjusted using a screwdriver, giving riders the flexibility to customize the ignition system to their specific needs.

The RFX 51800 Kit is a plug-and-play system, making installation straightforward and hassle-free. It is designed to directly replace the stock ignition system, requiring no modifications to the wiring harness or engine components.

In summary, the RFX 51800 Kit is an excellent choice for riders looking to enhance their KTM or Husqvarna motorcycle's performance and reliability. With its high-performance ignition coil, advanced digital ignition module, and adjustable timing pickup, this kit provides superior spark energy, real-time ignition timing adjustments, and customizable ignition settings for optimal engine performance.

The RFX 51800 kit, which is compatible with KTM, Husqvarna, and Gas Gas motorcycles, is a performance upgrade for riders who are looking to enhance the power and handling of their bikes. Here are some pros and cons to consider before making a purchase:

Pros:

1. Increased Power: The RFX 51800 kit is designed to deliver significant power gains, making your motorcycle faster and more responsive. This can be especially noticeable in the mid-range and top-end power.

2. Improved Throttle Response: The kit includes a new fuel mapping and ignition timing, which results in smoother and more responsive throttle response. This can make your riding experience more enjoyable, especially in technical terrain.

3. Enhanced Exhaust Sound: The RFX 51800 kit comes with a new exhaust system, which not only improves performance but also adds a more aggressive and pleasing exhaust note.

4. Better Fuel Efficiency: Although the kit provides more power, it can also lead to better fuel efficiency due to the optimized fuel mapping and ignition timing.

5. Easy Installation: The RFX 51800 kit comes with a step-by-step installation guide and all necessary hardware, making it relatively easy for most riders to install it themselves.

Cons:

1. Cost: The RFX 51800 kit can be quite expensive, especially when considering the cost of other aftermarket upgrades and modifications.

2. Loud Exhaust: The new exhaust system can be quite loud, which may not be desirable for all riders, especially those who prefer a quieter riding experience.

3. Potential Emissions Increase: The RFX 51800 kit may result in increased emissions due to the optimized fuel mapping and ignition timing. This could be a concern for riders who live in areas with strict emissions regulations.

4. Potential Warranty Issues: Installing aftermarket modifications like the RFX 51800 kit could potentially void the factory warranty on your motorcycle. It's essential to check with your dealership or manufacturer to understand the potential implications.

Conclusion:

The RFX 51800 kit offers several benefits for riders who are looking to enhance the power and performance of their KTM, Husqvarna, or Gas Gas motorcycle. However, it comes with some potential drawbacks, such as cost, loud exhaust, potential emissions increase, and warranty issues. Ultimately, the decision to purchase the RFX 51800 kit depends on your priorities and budget. If you value power, improved throttle response, and a pleasing exhaust note, then the kit could be an excellent investment. However, if you're concerned about cost, emissions, or warranty issues, then you may want to consider other options or weigh the potential benefits against the drawbacks.

Recommendation:

If you're considering purchasing the RFX 51800 kit for your KTM, Husqvarna, or Gas Gas motorcycle, I would recommend doing thorough research and carefully considering the pros and cons. Consider consulting with an experienced mechanic or dealer to understand the potential benefits and drawbacks for your specific motorcycle model and riding style. Additionally, be sure to check with your dealership or manufacturer regarding any potential warranty implications before making a purchase. Ultimately, the decision to purchase the RFX 51800 kit is a personal one, and it's essential to weigh the potential benefits against the drawbacks to ensure it's the right investment for you.

Details:

Universal valve caps add an extra layer of protection for your tires, ensuring longevity and safety during rides. The RFX Factory Kit Red Part Number FXFK 51800 99RD is designed to enhance and restore the performance of your KTM, Husqvarna, or Gas motorcycle. Whether you're preparing your motorcycle for a race or routine maintenance, this kit simplifies the process by providing all necessary parts in one package. The included reservoir covers and axle blocks help improve the integrity of your suspension system, while rim nut washer kit provide secure wheel attachment.

The universal valve caps included ensure proper sealing and maintenance of your tires, making this kit versatile easy to install.Constructed with quality materials, the RFX Factory Kit ensures durability reliable performance in demanding riding conditions.

part #: 51800 price

  • $139.99

specifications pistondon:

  • for makes: Ktm, Husq
  • brand: Rfx
  • mpn: 51800

shipping pistondon:

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

offer pistondon:

  • quantity: 7
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: March 18, 2026

returns pistondon:

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

payments pistondon:

  • other
  • wallet: Paypal
  • credit card: Visa

general pistondon:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

seller pistondon:

  • # reviews: 32040
  • rating: 99.8%
  • city: Largo, Florida
for makes: ktm, husq,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 11277514911179771,

Rfx 51800 Is Similar To:

  • (68.8% similar) Some items pictured may not be included. Actual product may vary from picture. Rim nut washer kit. The kit includes two front reservoir covers tailored for specific model's, a rear cover to protect the fluid system, and axle blocks that ensure proper alignment stability during operation...(March 14th, 2026)
  • (42.7% similar) Laser-etched Rfx logos add a touch of and brand identity.this kit is available in multiple colors to match different motorcycle styles preferences. Reservoir cap kit grey hon the Rfx reservoir in grey is designed for offload motorcycle brake and clutch systems. Please verify compatibility...(March 16th, 2026)
  • (44.9% similar) Compatible with a variety of model's, this kit offers enhanced durability and sleek appearance. It features tighter tolerances than oem cast parts to ensure a superior fit and long...(March 16th, 2026)
  • (88.2% similar) The Rfx factory kit in striking red is designed specifically for ktm, Husqvarna, and gas motorcycles, offering high-quality components to enhance braking performance reliability. Crafted for durability and precision, these parts ensure a secure fit optimal functioning under demanding riding...(March 18th, 2026)
  • (97.7% similar) Part #: Rfx 51900 for sale...(March 18th, 2026)
  • (57.9% similar) This versatility makes the Rfx handlebar mount kit a practical choice for racers, enthusiasts, and mechanics aiming to optimize their bikes handling comfort. Designed as an oem replacement, this handlebar adapter kit enables seamless switching between standard 7/8 inch handlebars and oversize 1...(March 18th, 2026)
pistondon logo
5 offers $139.99–$139.99 USD
  • Offer #1: $139.99 price + $0.00 shipping estimate = $139.99* total. The vendor part number is FXFK 99RD Up for sale is RFX FACTORY KIT RED KTM/HUSQ/GAS FXFK 99RD.FREE SHIPPING
  • Offer #2: $139.99 price + $0.00 shipping estimate = $139.99* total. This item fits the following applications United Kingdom. KTM 85 SX 2015-2020.FREE SHIPPING
  • Offer #3: $139.99 price + $0.00 shipping estimate = $139.99* total. The kit's components are engineered to fit select applications, making installation straightforward and efficient without the need for specialized tools.FREE SHIPPING
  • Offer #4: $139.99 price + $0.00 shipping estimate = $139.99* total.FREE SHIPPING
  • Offer #5: $139.99 price + $0.00 shipping estimate = $139.99* total. The vendor part number is FXFK 99BU Up for sale is RFX FACTORY KIT BLUE KTM/HUSQ/GAS FXFK 99BU.FREE SHIPPING

Copyright © pistondon.com