Premium air filter for Yamahaa (P-Y6E04-S2). Cotton DNA air filters are designed to increase power and acceleration while providing excellent filtration.

Model: P-Y6E04-S2
Yamaha XT 660 R 04'-14 'Air Box Cover Filter Stage 2 (S2)

OEM Air Filter Airflow: 127.90 CFM
DNA Air filter Air flow: 186.90 CFM
DNA increased air flow: 46.13%
DNA filter efficiency: 98-99%

This DNA filter has DNA's advanced FCd (Full Contour design).
Installation of the air filter is very simple, just follow the information that can be found in the workshop manual.
The filter efficiency is extremely high with 98-99% filter efficiency, with 4 layers of DNA cotton.
The flow of this DNA-Fcd filter is high, 46.13% more than the standard paper filter!
DNA Fcd air filter flow: 186.90 CFM (cubic feet per minute) @ 1.5 "H2O corrected @ 25 degrees Celsius.