When I was building my 2017 conversion, I had an issue with my airbox spacing. I found a guy making kits similar to the Pro Circuit kit, but with 3D printed airbox spacers. I wanted to buy a single spacer, but he wasn’t interested in just selling a ring. I finally got him to agree by buying a kit. I haven’t done anything with the kit, because I needed to buy some parts to make it work. I had the stock tank from the 2017 conversion, and I managed to find a stock subframe for cheap on eBay. Everything else was OEM or aftermarket, so I’ve been slowly collecting parts. My son upgraded to a 250, so I decided to put the kit on his old 125. Unfortunately the kit did not come with instructions, and the company is no longer making the kits [edit 6/30/19 they are still offering the kits on eBay]. It took me a couple of Saturdays to figure it all out, but I think I finally got it where I like it. The kit comes with a couple of brackets to mount the subframe. One goes on the left side of the bike, and uses the subframe mount and the chain roller mount to locate a bracket for the new subframe to bolt to (picture 1). The other uses the shock mount and top subframe bolt to mount two new brackets that the top of the subframe attaches to (picture 2). In this picture I had the spacers installed incorrectly. The right side bolts directly to the bracket, and the spacer goes on the left side. I’ll post some pictures of the airbox spacers in my next post.
