Web exclusive
RITCHEY BOOM REDUCER 31.8 TO 28.6MM - 1-1/4 TO 1-1/8
Ritchey Stem Shim adapters allow 25.4mm forks to fit 28.6mm diameter stems, and 28.6mm forks to fit 31.8mm diameter stems.
Sold and shipped by Sports LAB CH
Changed your mind? You can return items directly to the seller within 30 days using their chosen carrier.
Shop items from our verified sellers for extra peace of mind.
Exclusive products only available online. Shop from anywhere and choose how you want it delivered.