You will note that these are version 2.1.
The original (version 1) used a curved metal shield to block the wind. This wrapped around the front of each grip and brake/clutch lever. However, the metal was big and bulky looking. I also think the curved design did not divert the wind as well as a flatter shield.
The newer version 2.0 used a flat Lexan flat sheet, however, I was still getting some cold wind blowing on my fingertips when wrapped around the grips.
The newest version (2.1) uses a slightly larger sheet of Lexan and bends the bottom portion back for reduced size at the front face as well as to help protect the fingertips at the bottom.
Think of these as windshields for your hands.
These are mounted on my Yamaha Vstar 650, however, I suspect the mount can be modified to fit many makes of motorcycle.
If you line up all your materials and steps ahead of time, it should not take more than 1 hour.
Total cost should be about $15 or less
Step 1: Materials and tools
(2) .093" x 8" x 10" Lexan sheets. I got mine at Home Depot. They are replacement panes for windows. They cost $3.75 each
(4) each stainless steel machine screws (10-32 x 1/2"), and lock nuts
(8) each stainless steel washers
(1) length of 1/8" x 1" aluminum bar (I had mine from a previous project, but you could really use whatever size works for you)
Hacksaw to cut metal bar to length
Vise for bending metal bar to 90 degree angle
Drill (I needed 3/8" for my mirror mounts and 3/16" for #10 screws)
Files (flat for smoothing edges of metal bar and Lexan after cutting; also needed round file for tweaking hole for mirror mount)
Bandsaw (or jigsaw) for cutting Lexan)
Heat gun (or oven)
Wood blocks and clamps (for bending Lexan)