Product Description Summary

The DNA P-K4S18-01 Air Filter is a high-performance upgrade for Kawasaki ZX4R, RR, and Ninja 400 (2018–22) models. Featuring DNA’s Full Contour Design and 4-layer cotton gauze media, it delivers 31.15% more airflow than the stock filter while maintaining 98–99% filtration efficiency. Ideal for road riders, it installs easily in the stock airbox with no modifications and is fully washable for long-term use.

DNA Air Filter for Kawasaki ZX4R / RR, Ninja 400 – Enhanced Power & Filtration

Unlock better throttle response, increased power, and long-term performance with the DNA P-K4S18-01 High Performance Air Filter. Built specifically for road use, this drop-in replacement filter is engineered to deliver high airflow and top-tier engine protection without requiring any modifications to your Kawasaki’s factory airbox.

Maximum Performance Output

Boosted Airflow – Increases intake efficiency with 160 CFM airflow at 1.5” H₂O.
Enhanced Horsepower – Improves acceleration and throttle response for road riding.
Optimized Fit – Advanced Full Contour Design ensures maximum contact and air sealing.

Superior Filtration Technology

FCd Design – Precision-built for consistent airflow and enhanced filter surface area.
Filtration Efficiency – 98%–99% efficiency (ISO 5011 tested) using 4-layer cotton gauze.
Direct OEM Fit – Installs directly into the factory airbox with no modifications needed.

Built for Longevity

Washable & Reusable – Clean and reuse the filter every 10,000–15,000 km.
Cost-Effective – Long service life outperforms disposable OEM filters.
Eco-Friendly – Reduces waste with washable, durable construction.

Compatible Models

• Kawasaki ZX4R / RR

• Kawasaki Ninja 400 (2018–2022)

• FAQs

  Q1: Is this filter compatible with the Kawasaki Ninja 400?
  A: Yes, it fits all Ninja 400 models from 2018 to 2022.

  Q2: Do I need to make any modifications to install this filter?
  A: No, it’s a direct drop-in replacement for the OEM filter.

  Q3: How often should I clean the filter?
  A: Clean it every 10,000 to 15,000 km under normal riding conditions.

  Q4: Is it reusable?
  A: Yes, it’s fully washable and reusable, offering a long service life.

  Q5: How does it compare to the stock filter in terms of airflow?
  A: The DNA filter offers 160 CFM vs. 122 CFM from the OEM filter—a 31.15% increase.