You can add a pong to the normal air cleaner box. (Normal air cleaner filter can also be used) Just replace the cover to increase the intake air volume!
The large capacity discharge pump and BIG throttle body are equipped with an air cleaner cover to increase the amount of air inhalation.
With the intake air volume adjustment function (you can change the number of released grommets at the bottom of the grommet), you can set it in a wide range of settings. Try it! Product is made of FRP and the color is only black gel.