Customizable mounting for right or left hand inside or bar end placement, allowing flexible installation on most bikes
Improved friction ratchet mechanism provides immediate and accurate feedback for skill development
Hinged bar clamp enables convenient cable routing and fine-tuned cable flow
Compatible with up to 9-speed rear derailleurs for broad bike compatibility
Durable construction designed for long-term use and personal bike connection
Summarized by Shop
Choose the X for a right-hand (inside) thumby or a left-hand bar end
Choose the O for a left-hand (inside) thumby or right-hand bar end If you want having them on the outside, mount the O on the right, X on the left.
Match type O to type O, and type X to type X to get the corresponding thumbie mount
----- Short story: These are friction s
Shifting Mechanism
Mechanical friction ratchet (non-indexed)
Speed Compatibility
Up to 9-speed rear derailleurs (not compatible with SRAM rear derailleurs)