THE JQRacing Airfilter Foam Inner and Outer 4pcs
THE JQRacing Air Filter Foam Set includes four inner air filters, and four outer air filters. I remember when designing the arifilter I had no idea how much bigger the foam should be than the holder itself. It is these small things that just stop you in your tracks. I had never even considered the issue, but it is clearly and important one. Use high quality air filter oil, on both the inner and outer foams.