ULTIMA 12-576 Performance Evolution Roadking Air Filter

( Brand: Ultima ), ( Manufacturer Part Number: 12-576 ), ( K N Ref: Hd-1390 ), ( Mounting Style: Bolt-on ), ( Machine Type: Street Motorcycle ), ( Items Included: Filter ), ( Material: Metal ), ( Type: Air Filter ), ( Oe/oem Part Number: 29259-91a 29259-89 And 29330-96 ), ( Drag Specialties Ref: 1011-0318 ), ( Features: Easy Installation ), ( Performance Part: Yes )

Review ULTIMA Performance Air Filter For Harley Evolution Roadking fits DYNA SOFTAIL FLHT 1990–1999

Introducing the Ultima 12-576 Performance Air Filter, a game-changer for Harley-Davidson riders with 90-99 Evolution Dyna Road King FLHT Softail models. This high-performance air filter is designed to enhance your motorcycle's engine efficiency and power output, delivering a smoother, more responsive ride.

Crafted from a specially formulated cotton media, this air filter boasts a high-flow design that allows for maximum air intake. The media is both washable and reusable, ensuring long-term savings and reducing the need for frequent replacements. The inner pleats are engineered to provide a large filtering surface area, effectively capturing contaminants while maintaining optimal airflow.

The Ultima 12-576 Performance Air Filter features an OEM-style, three-piece design for easy installation. The filter comes with a high-quality, reusable aluminum intake tube and a custom-designed, rubber intake gasket, ensuring a perfect seal and leak-free performance.

This air filter is also designed to accommodate the factory air cleaner cover, maintaining the original appearance of your Harley-Davidson motorcycle. The filter can be easily cleaned using compressed air or a gentle water spray, ensuring it remains in top condition and continues to provide optimal airflow and filtration.

Investing in the Ultima 12-576 Performance Air Filter is a wise choice for Harley-Davidson enthusiasts looking to improve their bike's performance and efficiency. With its high-flow design, washable and reusable media, and OEM-style fitment, this air filter offers a cost-effective and reliable solution for enhancing the riding experience on your Evolution Dyna Road King FLHT Softail.

Pros and Cons of Buying an Ultima 12-576 Performance Air Filter for Harley-Davidson 90-99 Evolution Dyna Road King FLHT Softail

The Ultima 12-576 performance air filter is a popular aftermarket filter option for Harley-Davidson Evolution Dyna Road King FLHT Softail models. This air filter is known for its high-performance design, which can improve engine performance and air flow. In this analysis, we will discuss the advantages and disadvantages of purchasing this air filter for your Harley-Davidson.

1. Enhanced Engine Performance: The Ultima 12-576 air filter is designed to increase air flow and improve engine performance by capturing more air. This can lead to better throttle response, increased horsepower, and improved fuel efficiency.

2. Reusable and Washable: Unlike traditional paper filters, the Ultima 12-576 air filter is reusable and washable. This can save you money in the long run, as you won't need to purchase new filters as often.

3. Durable Design: The Ultima 12-576 air filter is made from a high-quality, synthetic material that is resistant to oil, water, and other contaminants. This can help extend the life of the filter and ensure that it continues to perform at a high level.

4. Easy Installation: Installing the Ultima 12-576 air filter is a relatively simple process. Most Harley-Davidson owners can install the filter themselves, saving them time and money on labor costs.

1. Initial Cost: The Ultima 12-576 air filter has an initial higher cost compared to traditional paper filters. However, the savings from not having to purchase new filters as often can offset this cost over time.

2. Requires Regular Maintenance: While the Ultima 12-576 air filter is reusable, it does require regular maintenance. This includes washing the filter every 1,000 to 2,000 miles to ensure that it continues to perform at a high level.

3. Potential for Increased Noise: Some Harley-Davidson owners have reported that the Ultima 12-576 air filter can increase engine noise. This is due to the increased air flow and improved engine performance.

The Ultima 12-576 performance air filter is a high-quality aftermarket option for Harley-Davidson Evolution Dyna Road King FLHT Softail models. While it has an initial higher cost and requires regular maintenance, the benefits of improved engine performance, increased fuel efficiency, and a reusable and washable design make it a worthwhile investment for many Harley-Davidson owners.

If you are looking to improve the performance of your Harley-Davidson Evolution Dyna Road King FLHT Softail, the Ultima 12-576 performance air filter is a great option to consider. Its high-performance design, durability, and reusability make it a cost-effective and practical choice for Harley-Davidson owners who want to get the most out of their motorcycle.

Details:

Zinc coated components to prevent rusting. Drag reference # 1011-0318. K N reference # HD-1390. Epoxy coated wire mesh.

Hand poured to eliminate winking. High-flow four layer construction of surgical cotton. Urethane seals better to mating surfaces because it is more flexible. Performance Air Filter For 90-99 Harley Evolution Dyna Roadking FLHT Softail, Replaces OEM # 29259-91A, 29259-89 and 29330-96 / 12-576.

Fits 1990 99 Evo Big Twin Evolution carburetors, Road King, Glide, All Touring, FXD, FXDWG, all Dyna, FXRS, FXST, FLST, Heritage.

part #: 12576 prices

• $23.99-$37.99

specifications scoofilters:

• for models: Flht, Dyna, Softail
• for makes: Harley
• for years: 1990-1999
• brand: Ultima
• mpn: 12-576
• k n ref: Hd-1390
• mounting style: Bolt-on
• machine type: Street Motorcycle
• items included: Filter
• material: Metal
• type: Air Filter
• oe/oem part number: 29259-91a 29259-89 And 29330-96
• drag specialties ref: 1011-0318
• features: Easy Installation
• performance part: Yes

seller scoofilters:

• rating: 98.9%
• city: Fond du Lac, Wisconsin
• # reviews: 20792

offer scoofilters:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: September 9, 2025
• quantity: 1

shipping scoofilters:

• cost: $0.00
• type: Fixed
• transit: 2-6 Days
• class: Standard
• service: UPS Ground
• carrier: UPS

general scoofilters:

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

returns scoofilters:

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

payments scoofilters:

• credit card: Visa
• wallet: Paypal
• other

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