I had "In Fills" on two of my RT's. I can't remember the manufacturer but they where probably Pyramid. The quality of mine, where a bit "iffy". I recall having to "reinforce" then after a couple of years use. I did like the appearance when fitted as they filled in the "hole" just above the Pillion Footrest and complimented the lines of the bike in that area. Although I do appreciate that this will be down to individual taste. We did notice that my wife's boots did not seem to get as dirty or wet with the infills fitted. Access for cleaning around the Swinging Arm was not affected as I don't make use of the "Hole" for that purpose. The current selling price of around £50 does seem a lot for two pieces of plastic (yes I know, moulds have to be made, tooling designed and the production run will be quite small by general standards). If someone can get some made in China for around half the price I would probably go for them.