Road Bike Oval Seat Rail Shim

thingiverse

I created these shims to enable me to use a saddle with circular rails on a seat post designed for oval rails. Specifically, I needed to adapt a Bontrager 7x10 seatpost to fit my saddle's 7mm round rails. The solution was simple yet effective - the shims pop onto the saddle rails, and then the seat post clamps around them securely.