Lock On Bike Grips
thingiverse
Lock-on style bike handlebar grip. Should be more than secure enough for casual riding; I wouldn't trust any 3D printed part to hold on for anything technical. Note that the printable portion is only the frame; the grippy portion is customizable to your preference with your choice of grip tape with/without additional foam padding underneath. In addition to grip materials, you will need two 14-16 mm M3 screws/nuts for each grip.
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