The FORM modular leg length shim is compatible with all 3-hole road cleats. It includes a number of innovative and useful features:
a) overreaching on one side at the bottom of the pedal stroke
b) pelvis tilted or rider leaning to one side of the saddle in order to retain connection with the pedals through the bottom of the stroke
c) one leg feeling under-extended whilst the other feels just right
Assuming the rider's position is correct, and their legs have been assessed to have a discrepancy, the issues above could be solved with the use of leg length shims. Shimming, with the correct amount of rise, can create a more equal leg extension, stabilise the pelvis and lead to a smoother and more controlled pedal stroke on the shorter side.