Post by
VStar650CL »
https://forums.nicoclub.com/vstar650cl-u299034.html
Fri Mar 03, 2023 2:40 pm
I can tell you from experience with many customer vehicles that the OE frameless types don't always seal well against the walls of the HVAC. That can lead to things like pine needles sneaking past the filter and into the blower cavity, and at 3,000 RPM it doesn't take more than a couple of pine needles to imbalance the blower cage and cause noise or even ruin the nose bearing. So if the frames are foam, or even a soft rubber or urethane, I imagine they might provide a better seal and represent a real improvement.