Description
The K&N Filters Replacement Filter Element for RK Series (KNNE-3988) is designed to fit select K&N RK Series air cleaner assemblies, including models RK3952 and RK3953. Engineered for durability and performance, this replacement element helps maintain airflow and filtration efficiency to keep your engine running smoothly. Ideal for riders who want to restore their filter without replacing the entire system, this unit is easy to install and built to last. It ensures optimal performance for K&N high-flow air intake systems used in motorcycles and power sports vehicles. Whether you’re maintaining or upgrading your setup, this filter element meets the need.
Features and Specifications:
- Vehicle Fitment: Fits K&N RK3952 and RK3953 air cleaner assemblies.
- Height: 2.375 in (60 mm)
- Outside Diameter: 9.313 in (237 mm)
- Weight: 1.1 lb (0.5 kg)
- Performance: Increases horsepower and improves acceleration.
- Construction: Features high-flow filter media for superior air filtration.
- Maintenance: Washable and reusable for long-term use.
- Warranty: Backed by a Million Mile Limited Warranty.





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