If you have an F3T/L, and the mirrors shake, we have the fix! We tried all the posted DIY, then bolts, screws, you name it. They seemed to work, then as time went by, they went right back to useless. As a MSF instructor, using your mirrors helps keep you safe. Mirrors you can’t see with are dangerous. So, after multiple failures, we came up with a solution; the Wedgie! We wanted a simple, easy to use fix, no drilling, cutting, or modifying your Spyder in any way. My Beta testers (Thank you one and all!) report thousands of miles, and no more shake! If you have a F3T or F3Limited, contact us for a set of Wedgies. $25, shipped in USA. Everywhere else, contact us for a shipping quote. Requires a #20 torx screwdriver. Cheers! Joe