UniFilter - Competition II Air Filter (NU-4131ST) past type tag-Jerseys so riders can ride smoother

so riders can ride smoother with confidence

Indy type cars

Inspired by our hypersport tires with high-quality materials

2008 KTM 250 SX

2006 YAMAHA FJR1300A ABS

UniFilter - Competition II Air Filter (NU-4131ST) past type tag-Jerseys so riders can ride smootherDesigned to fit in the factory airbox UNI FILTERs high air flow, superior dirt stopping ability, and long lasting dependability have made the PRO COMP II. The bestselling replacement air filter for competition motorcycles. The UNI FILTERs unique two stage design allows for easy and complete cleaning. The outer layer can be used dry as pre filter allowing for longer intervals between cleanings, or it can be oiled for superior engine protection in