UNI NU-4147ST Air Filter for Off-Road Motorcycles and ATVs

The UNI NU-4147ST air filter is specially designed to fit perfectly into the factory air box, ensuring a seamless replacement for your off-road motorcycle or ATV. Constructed with a unique two-stage design, this filter allows for easy cleaning and maintenance, making it a reliable choice for competitive riders and recreational enthusiasts alike. The dual-layer foam construction provides superior filtration while enabling separate servicing of each layer, which extends the lifespan of the filter and maintains optimal engine performance. Its ultra-thin, virtually tear-proof seal base features a built-in grease groove, ensuring a secure fit and durability under demanding conditions. Trusted by factory teams from Yamaha, Kawasaki, and Suzuki, this filter guarantees high-quality performance and dependable protection for your engine. Whether you're racing or riding off-road, the UNI NU-4147ST air filter offers an ideal combination of efficiency, durability, and ease of maintenance to keep your vehicle running at peak performance.

Features:

• Designed to fit in the factory air box exactly like the original filter

• The best-selling replacement air filter for competition motorcycles and ATVs

• Unique two-stage design allows for easy and complete cleaning

• Dual layer of foam can be serviced separately

• Thin ultra seal base is virtually impossible to tear and features a built-in grease groove

• Used by factory Yamaha, Kawasaki, and Suzuki off-road teams