This genuine Ritchey Stem Shim adaptor allows forks with a 25.4mm (1″) steerer to be used with 28.6mm (1-1/8″) diameter stems. The alloy shim also converts forks with a 28.6mm (1″-1/8″) steerer to be compatible with 31.8mm (1-1/4″) diameter stems.
70%





