- Dec 25, 1999
OK, I've been reading, and it seems the hot tip is to remove the backfire screen on the inner filter of four-strokes. I know this isn't any news, but I'm new to 4-stroking so bare with me. I'm assuming you just remove the screen from the inner cage, and not the whole inner cage? Am I correct? Also, I was looking at Twin Air's website... they have many things to offer. They have a Hi-Flow filter kit, that replaces the stock cage, and also provides a better sealing rubber strip around the filter base. And it also replaces the restrictive backfire filter. But they also recommend that you buy their Backfire Air filter. It has an added layer on the inside of their outer-filter. So my main question is, what are all you 4-stroke riders doing? Are you just punching the screen out from the backfire filter and running a normal air filter? Or have any of you bought one of these BackFire air filters once you replace the inner backfire filter? Seems like these Hi-Flow filter kits from TwinAir that are $105 may not be worth it. Thanks in advance, and pardon my ignorance.