Our Thumbies are the original upright handlebar mount for bar end shifters. They do not include the shifter, but are designed to be used with indexed bar end (aka barcon) shifters from Shimano, Campagnolo, SRAM and others. These shifters are readily available for 8, 9 and 10-speeds, and most have a friction option for everything else.

Admittedly, we weren't sure at first if these would be a good idea or kind of gimmicky, but it was love at first test ride. The thumb shifting of old came back instantly and the bike shifted more precisely and smoothly than ever before. These feel much better in our opinion than trigger or twist shifters.

Mountain Thumbies fit standard mountain bike handlebars, but will work with most anything that has a 22.2mm (⅞ inch) diameter. The shifter boss is raised from the bar to give clearance for bulky two-bolt brake levers, and the hinged clamp makes installation easy.

Three versions are available to pair with Shimano bar end, Campagnolo bar end, or SRAM TT shifters. Each company has their own unique shifter boss fitting and they are incompatible with one another.

With the addition of our Silver Shifter Adapters, Shimano Mountain Thumbies will work with the ratcheting Silver Shifters available from Rivendell. These shifters work just like the old Suntour Power Ratchet shifters, but better.

The bar end shifters themselves are not included with the Thumbies, sorry. Please make sure to order the proper Thumbies to go with your brand of shifters.

Tech Info:

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