The diameter of the outlet and the connection to the cleaner box is clearly wider than the OEM. I can visibly feel that this will increase the intake airflow….
The installation itself wasn't that difficult, but you do need to remove the Front Cowl as well. If you don't install it at a good angle, the intake port of the front cowl (Inside) and Duct's mouth interfered. I referred to youtube videos and other sources, but I don't think anyone specifically mentioned interference, so it could be individual differences or …wrong installation……
The intake sound is much louder and more powerful. It is a good sound. I love it. It also feels like it has more power blowing up to ~10000 RPM. In general, I am satisfied with Large.
Now I need to replace the Funnel and Filter to complete the intake system.