1. Motorcycle/Scooter Air Filters Deals
  2. sku: 6377520687803721
  3. HARLEY RK-3903

HARLEY RK-3903 Air Intake 024844040503

fits model: Xl1200c, Sportster. make: Harley, Davidson. year: 1991–1997.

Rk-3903 K&n Rk3903 Chrome Air Intake System For 91-97 Harley Davidson Sportster Xl1200c

( Brand: Harley ), ( Manufacturer Part Number: RK-3903 ), ( Part Type: Intake ), ( UPC: 024844040503 )

Review HARLEY Rk3903 Chrome Air Intake System For Davidson fits SPORTSTER XL1200C 1991–1997

The RK-3903 Air Intake System from Rinehart Racing is a high-performance upgrade for Harley-Davidson Sportster XL1200C models from 1991 to 1997. This intake system is designed to enhance the appearance and functionality of your motorcycle.

The RK-3903 intake system features a unique, high-flow design that utilizes a large, conical air filter element. This filter element is constructed from cotton gauze, which provides excellent filtration while allowing maximum airflow into the engine. The intake system also includes a high-performance, 3-inch polished aluminum velocity stack, which helps to smooth out the airflow entering the engine for improved performance and throttle response.

The intake system is constructed from high-quality materials, including CNC-machined aluminum and high-temperature silicone. The aluminum components are finished in a durable, black anodized coating for a sleek, modern look. The intake tubes are constructed from heat-resistant silicone, which provides excellent durability and flexibility.

Installing the RK-3903 Air Intake System is a straightforward process, and it is compatible with both stock and aftermarket air boxes. The intake system comes with all necessary hardware for installation, including new mounting brackets and clamps. The kit also includes a detailed instruction manual to guide you through the installation process.

By upgrading to the RK-3903 Air Intake System from Rinehart Racing, you can expect improved engine performance, including increased horsepower and torque. The intake system also helps to enhance the overall look of your Harley-Davidson Sportster XL1200C, with its polished aluminum components and large, conical air filter. Whether you're looking to boost performance or simply want to give your bike a unique, custom look, the RK-3903 Air Intake System is an excellent choice.

Pros and Cons of Buying RK-3903 Air Intake for 91-97 Harley Davidson Sportster XL1200C

The RK-3903 air intake system is a popular aftermarket upgrade for Harley Davidson Sportster XL1200C models from 1991 to 1997. This intake system aims to improve engine performance by increasing airflow and providing better filtration. In this article, we will discuss the pros and cons of investing in the RK-3903 air intake system for your Harley Davidson Sportster XL1200C.

Pros:

1. Enhanced Performance: The RK-3903 air intake system is designed to provide improved airflow to the engine, resulting in increased horsepower and torque.

2. Better Filtration: The air filter used in the RK-3903 intake system is larger and more efficient than the stock filter, ensuring cleaner air enters the engine.

3. Improved Throttle Response: The increased airflow and improved filtration lead to better throttle response, making the bike more responsive and agile.

4. Customizable Look: The RK-3903 air intake system comes with a unique design that not only enhances performance but also adds a custom look to your bike.

Cons:

1. Cost: The RK-3903 air intake system is a premium aftermarket part and can be quite pricey compared to the stock intake system.

2. Installation Complexity: Installing the RK-3903 air intake system can be a complex process, requiring some mechanical skills and tools.

3. Potential Noise: Some riders have reported that the RK-3903 air intake system can produce a louder than expected exhaust note, which may not be desirable for everyone.

4. CARB Compliance: The RK-3903 air intake system is not CARB (California Air Resources Board) compliant, meaning it is not legal for use in California.

Conclusion:

The RK-3903 air intake system is an excellent aftermarket upgrade for Harley Davidson Sportster XL1200C models, offering improved performance, better filtration, and a custom look. However, it comes with some cons, including cost, installation complexity, potential noise, and CARB compliance issues.

If you are an avid rider seeking to enhance your bike's performance and don't mind the cost and installation complexity, the RK-3903 air intake system could be an excellent investment for you. On the other hand, if you are looking for a more budget-friendly option or prefer a quieter ride, you may want to consider alternative aftermarket intake systems or sticking with the stock intake. Ultimately, the decision depends on your personal riding preferences and priorities.

Details:

K N part number RK-3903. Application Guide: 1991 1997 Harley Davidson XL1200C Sportster Free Shipping is for continental USA only. H/D SPORTSTER FILTER KIT, ROUND MIRROR, designed to increase horsepower torque Washable and reusable.

part #: rk3903 prices

  • $74.99-$143.96

specifications scoofilters:

  • for models: Xl1200c, Sportster
  • for makes: Harley, Davidson
  • for years: 1991-1997
  • brand: Harley
  • mpn: Rk-3903
  • part type: Intake
  • upc: 024844040503

seller scoofilters:

  • # reviews: 22606
  • city: Houston, Texas
  • rating: 99.5%

general scoofilters:

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

payments scoofilters:

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

shipping scoofilters:

  • class: Expedited
  • type: Fixed
  • service: USPS Priority Mail
  • carrier: USPS
  • cost: $0.00
  • transit: 4-7 Days

offer scoofilters:

  • options: Ship-to-home
  • availability: In Stock
  • started: August 14, 2025
  • sold: 0
  • quantity: 4

returns scoofilters:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days
for models: xl1200c, sportster, for makes: harley, davidson, for years: 1991-1997, part type: intake,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery > air filters, sku: 6377520687803721,

Harley RK-3903 Is Similar To:

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4 offers $74.99–$143.96 USD
  • Offer #1: $143.96 price + $0.00 shipping estimate = $143.96* total. H/D SPORTSTER FILTER KIT, ROUND MIRROR. Application Guide: 1991-1997 Harley Davidson XL1200C Sportster.FREE SHIPPING
  • Offer #2: $99.95 price + $0.00 shipping estimate = $99.95* total. Selling As Is K&N Chrome Intake Assembly 91-97 Harley Davidson XL1200C Sportster PN # New.FREE SHIPPING
  • Offer #3: $74.99 price + $19.95 shipping estimate = $94.94* total. This kit ships world wide Offered here is an original new old stock complete K & N Chrome air filter kit correct for Harley Davidson XL 1200 Sportster (1991-97) models.+$19.95 shipping
  • Offer #4: $406.07 price + $53.29 shipping estimate = $459.36* total. Using a full synthetic oil may help to reduce oil consumption if a mineral or semi-synthetic oil is being used. K&N air cleaner assemblies designed for your Harley-Davidson are a remarkable combination of performance and style.+$53.29 shipping

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