Snap-Shims are required on all curved-sole shoes (insert the shims between the cleat base and the shoe) Do Not Mount The Snap-Shim Cleat On Any Curved Sole Shoe Without Using The Appropriate Shim System. Use Standard Snap-Shims on Standard Shoes ....Read More...
(insert the shims between the cleat base and the shoe) Do Not Mount The Snap-Shim Cleat On Any Curved Sole Shoe Without Using The Appropriate Shim System. Use Standard Snap-Shims on Standard Shoes and Sidi Snap-Shims on Sidi Shoes.
For more information on sizing and compatibility please view the Speedplay website