R-AMP;D R-amp NOS-RD-215-25001 Amplifier Ultra High Performance Nos 310 Air Filters

( Brand: R-amp;d ), ( Manufacturer Part Number: NOS-RD-215-25001 ), ( Part Type: Amplifier Filter )

Review R-AMP;D Ampnos-rd-215-25001 Nos Rkawasaki Ultra 310 High Performance Air Filters fits 250

The **AMP NOS-RD-215-25001 NOS Kawasaki Ultra 250/310 High-Performance Air Filter** is a meticulously preserved, never-used original equipment part designed to deliver unmatched performance and reliability for Kawasaki s legendary Ultra 250 and 310 dirt bikes. Crafted from high-quality, dense cotton media, this filter is engineered to maximize airflow while maintaining precise filtration, ensuring optimal engine efficiency and power output. The filter s unique design features a robust, durable frame that securely holds the cotton pleats, preventing collapse under high-pressure conditions while allowing for a clean, unrestricted flow of air into the engine. Ideal for both street and off-road applications, this filter is a direct replacement for the stock unit, offering superior filtration that extends the life of your engine by trapping dust, debris, and contaminants without restricting performance. Perfect for enthusiasts seeking a balance between power and longevity, the NOS condition of this filter guarantees it has never been installed, ensuring it remains in pristine, factory-fresh condition. Whether you're restoring a classic Kawasaki or upgrading an existing setup, this high-performance air filter is a must-have for riders who demand nothing less than the best in filtration and airflow.

### **Pros and Cons of buying a NOS AMP NOS-RD-215-25001 (NOS Kawasaki Ultra 250/310 High-Performance Air Filters)**

1. **Enhanced Engine Performance** These high-performance air filters allow for greater airflow compared to standard filters, which can improve horsepower and throttle response, especially in naturally aspirated engines like the Kawasaki Ultra 250/310.

2. **Durability and Longevity** NOS filters are made with high-quality materials, often featuring a dense cotton or synthetic blend that can withstand higher temperatures and last longer than basic paper filters, reducing the need for frequent replacements.

3. **Better Cooling** Improved airflow helps keep the engine cooler under heavy loads, which can prevent overheating and extend engine life, particularly in high-stress conditions like track use or aggressive riding.

4. **Easier Maintenance** Many high-performance filters are designed for quick and easy installation, often requiring no special tools or adjustments, making them convenient for DIY enthusiasts.

5. **Compatibility with Modifications** Since the Ultra 250/310 is a popular bike for tuning, these filters work well with other performance upgrades like exhaust systems, carburetor tweaks, or ECU remaps, allowing for a more cohesive performance boost.

6. **Reduced Restriction** Unlike restrictive stock filters, these allow cleaner air to reach the engine, which can help maintain optimal combustion efficiency, leading to smoother power delivery.

7. **Brand Reputation** NOS (New Old Stock) is a well-known brand in the performance parts industry, offering reliable products backed by customer support and a reputation for quality.

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1. **Higher Cost** High-performance filters are significantly more expensive than standard paper filters, which can be a drawback for budget-conscious riders who only need basic maintenance.

2. **Increased Dust and Debris Ingestion** While these filters allow more airflow, they may not filter out as much fine dust and particles as a high-quality paper filter, potentially leading to more wear on the engine over time if ridden in extremely dirty conditions.

3. **Potential for Overheating (If Misused)** If paired with an overly aggressive exhaust system or carburetor without proper tuning, the increased airflow could cause the engine to run too lean, leading to overheating or damage.

4. **Not Ideal for All Riding Conditions** In extremely wet or muddy environments, these filters may not provide the same level of protection against moisture ingress as a sealed paper filter, which could lead to water damage.

5. **Requires Proper Installation** While easy to install, improper sealing or installation can lead to air leaks, negating the performance benefits. Riders must ensure a tight fit to avoid losing power.

6. **Maintenance Frequency** Because these filters are denser, they may need more frequent cleaning or replacement compared to standard filters, depending on riding conditions.

7. **Potential Voiding of Warranty** If the bike is still under manufacturer warranty, installing aftermarket filters (especially high-flow ones) may void certain coverage, as they deviate from OEM specifications.

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The **NOS AMP NOS-RD-215-25001 (Kawasaki Ultra 250/310 High-Performance Air Filters)** are an excellent choice for riders looking to unlock extra power and improve engine efficiency. They offer noticeable performance gains, durability, and compatibility with tuning, making them ideal for enthusiasts who prioritize performance over strict maintenance simplicity.

However, they come at a higher cost and may not be the best fit for riders who primarily use their bike in harsh, dusty, or wet conditions without additional protection. If you plan to ride aggressively, modify your bike further, or simply want a noticeable power boost, these filters are a strong recommendation. For casual riders or those on a tight budget, a high-quality paper filter or a basic cotton filter might suffice.

If you own a **Kawasaki Ultra 250 or 310** and are looking to enhance performance especially for track use, high-speed riding, or pairing with other mods **the NOS AMP NOS-RD-215-25001 filters are a solid investment**. Pair them with proper maintenance (regular cleaning or replacement) and consider tuning your carburetion or ECU to optimize the airflow benefits.

For riders who mostly cruise or ride in dirty conditions, a **high-quality paper filter (like K&N or a reputable brand) with an oil bath system** might offer a better balance of protection and performance at a lower cost. Always ensure proper installation and monitor engine behavior after switching to high-flow filters to avoid any unintended issues.

Details:

NOS - Kawasaki Ultra 250 310 High Performance Air Filters.Rally model's of 250/260/300/310 Surge and Blow off Valve Filter Kit Only 2 pieces. IJSBA legal for all classes. Cooler engine compartment temperatures. Easy to install bolt on performance no modification.

Improved low end performance. Great high performance tone. Cooler engine air temperatures. Low cost performance advantages.The Filter Kit is easy to install with no modifications required .E.M.

part #: nosrd21525001 prices

• $26.52-$26.54

specifications jetskiintakeez:

• for makes: Kawasaki
• brand: R-amp;d
• mpn: Nos-rd-215-25001
• part type: Amplifier Filter

seller jetskiintakeez:

• rating: 100.0%
• # reviews: 3443
• city: Escondido, California

offer jetskiintakeez:

• availability: In Stock
• started: March 18, 2026
• options: Ship-to-home
• quantity: 2
• sold: 0

general jetskiintakeez:

• condition: New
• Parts Accessories > Personal Watercraft Parts > Intake Fuel Systems

returns jetskiintakeez:

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

shipping jetskiintakeez:

• type: Calculated
• transit: 3-7 Days
• class: Expedited, Standard
• service: USPS Priority Mail, USPS Priority Mail Express, FedEx Ground / FedEx Home Delivery, UPS Ground
• carrier: USPS, FedEx, UPS
• cost: $17.80

payments jetskiintakeez:

• other
• wallet: Paypal
• credit card: Diners-club

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• R amp D Nos-rd-215-25000 Nos R d Kawasaki Ultra 250-310 High Performance Air Filters 3 (96.6% similar) Low cost performance advantages.the filter kit is easy to install with no modifications required .e.m. Easy to install bolt on performance no modification. Cooler engine air temperatures. Cooler engine compartment temperatures. Improved low end performance. Great high performance tone. Nos - ...(March 18th, 2026)