Was looking around for drop in filter alternatives to K&N and Green Filters, and stumbled apon this facebook post.

Facebook Post
Took that info, looked around for any info on a US online retailer to purchase directly, and found a US ITG partner with Pegasus Auto Racing. Asked them if they could get the ITG-WB-352 filter kit, and they said they could import it. 2 months later, and $99 bucks plus shipping, I just recieved them and wanted to share my photo's I took. I don't have a JB4 so I don't have any data, but paired with @Rakker 's Bigger Mouth Intakes, I feel that the car is much more responsive. YMMV.
ITG Filter Unboxing / Install

ITG Company Video

Facebook Post
Took that info, looked around for any info on a US online retailer to purchase directly, and found a US ITG partner with Pegasus Auto Racing. Asked them if they could get the ITG-WB-352 filter kit, and they said they could import it. 2 months later, and $99 bucks plus shipping, I just recieved them and wanted to share my photo's I took. I don't have a JB4 so I don't have any data, but paired with @Rakker 's Bigger Mouth Intakes, I feel that the car is much more responsive. YMMV.
ITG Filter Unboxing / Install

ITG Company Video