2FASTMOTO 25-21668 Atv Air Filter 5UG-E4451-00

( Brand: 2fastmoto ), ( Manufacturer Part Number: 25-21668 ), ( Part Type: Filter ), ( Part Type 2: For Yamaha ), ( Category 1: Air Filters / Cleaners ), ( Ride Type 1: Atv/utv Utv / Sxs ), ( Average Delivery Time: 2-3 Days ), ( Package Weight: 0.6000 ), ( Package Length: 8.00 ), ( Package Width: 5.25 ), ( Package Height: 3.00 ), ( Manufacturer Warranty: 90 Days )

Review 2FASTMOTO Air Filter For Yamaha Atv fits YXR450F YXR660F 2004–2007

2FASTMOTO 5-Layer Air Filter (Part Number: 25-21668) Compatibility: Yamaha YXR450F (2006-2009) and YXR660F (2004-2007)

The 2FASTMOTO 25-21668 air filter is an exceptional upgrade for your Yamaha YXR450F (2006-2009) or YXR660F (2004-2007) ATV. This high-performance air filter, engineered with the latest 5-layer filtering technology, ensures optimal engine protection and improved airflow.

The filter's five layers consist of a pre-oiled cotton layer for initial filtration, followed by three layers of progressively finer synthetic media for capturing smaller contaminants. The final layer is a smooth, embossed polyurethane foam layer that acts as a protective barrier against larger particles, ensuring a long service life.

The filter's design allows for a perfect fit in your Yamaha ATV, ensuring maximum airflow and engine performance. The 25-21668 air filter comes pre-oiled, which means it's ready to install right out of the box. The pre-oiling process also ensures that the filter is properly saturated, reducing the risk of damaging the engine with dry filter elements.

This air filter is designed to provide a significant improvement in engine performance and overall riding experience. Its advanced filtration technology traps more dirt and debris, keeping your engine clean and protected. The increased airflow ensures better combustion, leading to increased power and torque.

The 2FASTMOTO 25-21668 air filter is easy to install, with no modifications required. It comes with a reusable aluminum filter cage, which can be cleaned and reused, making this air filter a cost-effective solution for maintaining optimal engine performance.

In summary, the 2FASTMOTO 25-21668 air filter is an excellent investment for any Yamaha YXR450F or YXR660F ATV owner looking to improve engine performance, increase power and torque, and ensure optimal engine protection. Its advanced filtration technology, ease of installation, and long service life make it a top choice for ATV enthusiasts.

Buying a 2fastmoto Air Filter for Yamaha ATVs: A Comprehensive Analysis

The 2fastmoto 25-21668 air filter is designed to fit various Yamaha ATV models, including the YXR450F from 2006 to 2009 and the YXR660F from 2004 to 2007. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this air filter for your Yamaha ATV.

1. Enhanced Air Flow: The 2fastmoto air filter is designed with a larger filtering area and a more efficient filter media, ensuring better airflow to the engine. Improved airflow can result in increased horsepower, better acceleration, and smoother engine performance.

2. Washable and Reusable: This air filter is washable and reusable, which can save you money in the long run since you won't need to purchase new filters frequently.

3. OEM-Style Design: The 2fastmoto air filter is designed to fit seamlessly into your ATV, using the original mounting points and retaining the factory airbox. This ensures a proper seal and minimal installation time.

4. Improved Filtration: The filter media used in the 2fastmoto air filter is designed to capture more dirt and debris, keeping the engine cleaner and reducing the need for frequent maintenance.

1. Upfront Cost: While the washable and reusable nature of the filter saves you money in the long run, the initial investment for the 2fastmoto air filter may be higher than that of disposable filters.

2. Potential Installation Issues: Some users have reported that the filter may not fit perfectly in their ATVs, requiring minor modifications or trimming to ensure a proper seal.

3. Filter Maintenance: Although the filter is washable and reusable, it still requires regular cleaning and maintenance to ensure optimal performance.

The 2fastmoto 25-21668 air filter offers several advantages, including enhanced airflow, washable and reusable design, OEM-style fitment, and improved filtration. However, it also comes with some disadvantages, such as a higher upfront cost and potential installation issues. Ultimately, if you're looking for a high-performance air filter that saves you money in the long run and offers better engine protection, the 2fastmoto air filter is an excellent choice. Just be prepared for the potential need for minor modifications during installation.

If you're in the market for a high-performance, washable, and reusable air filter for your Yamaha ATV, the 2fastmoto 25-21668 air filter is an excellent option. Its larger filtering area, efficient filter media, and OEM-style design make it a worthwhile investment for those seeking improved engine performance and reduced maintenance costs. However, be aware of the potential need for minor modifications during installation and the importance of regular filter cleaning and maintenance.

Details:

MANUFACTURER PART NUMBER25-21668 / 5Ug-E4451-00. Meets or Exceeds Orig. 100% satisfaction guaranteed. See fitment for year and model compatibility.

PART TYPE Air Filter. Equipment quality. Combined shipping available. PART TYPE 2For Yamaha.

Warranty: Air Filter is guaranteed against defects in workmanship and materials, meets or exceeds all warranty performance requirements of new equipment manufacturers. AIR FILTER FOR Yamaha ATV YXR450F 06-09 YXR660F 04-07 25-21668 / 5UG-E4451-00:: BRAND NEW Aftermarket Air Filter Cleaner Element.

part #: 2521668 price

• $19.88

specifications scoofilters:

• for models: Yxr450f, Yxr660f
• for makes: Yamaha
• for years: 2004-2007
• brand: 2fastmoto
• mpn: 25-21668
• part type: Filter
• part type 2: For Yamaha
• category 1: Air Filters / Cleaners
• ride type 1: Atv/utv Utv / Sxs
• average delivery time: 2-3 Days
• package weight: 0.6000
• package length: 8.00
• package width: 5.25
• package height: 3.00
• manufacturer warranty: 90 Days

offer scoofilters:

• availability: In Stock
• options: Ship-to-home
• started: December 27, 2025
• sold: 0

returns scoofilters:

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

general scoofilters:

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

seller scoofilters:

• rating: 99.5%
• city: Hilliard, Ohio
• # reviews: 500641

shipping scoofilters:

• type: Calculated
• transit: 4-10 Days
• cost: $0.00
• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, USPS Priority Mail Express Flat Rate Envelope
• carrier: USPS

payments scoofilters:

• other
• credit card: Diners-club
• wallet: Apple-pay

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