Thumbies bring back the thumb shifting of old, and we think it makes shifting more precise and smoother. These feel much better in our opinion than trigger or twist shifters.
Thumbies have a hinged clamp for an easy installation and fit handlebars with a diameter of 31.8mm (Road handlebars). The clamp is raised up to give clearance for hydraulic brake levers.
Paul currently makes Thumbies to work with SRAM shifters only. They have a shifter mounting boss that fits SRAM bar end shifters.
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