Thumbies allow you to mount bar end shifters on your handlebars to replicate the indexed and friction thumb shifters of decades past. Mountain Thumbies fit standard ø 22.2mm (⅞ Inches) handlebars.

Road Thumbies let you bring your shifters up from the downtube or your bar ends to the center flats of your handle bar. The Road model is designed to fit on ø 26.0mm handlebars.

Silver Shifter Adapters allow the use of the ratcheting Silver Shifters with our Road and Mountain Thumbies.