Rivendell:
"They're our 2020 model version of SunTour’s 1982 XC mountain bike thumb shifter. We copied what was perfect: The idea, the guts, and the shape. We surgically inserted the SILVER1 guts (the light ratchet inside, which SunTour dubbed “power ratchet”). It’s a slight improvement over the original SunTour ratchet."
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 shifters with a light ratchet. They don't index. They are beautiful, versatile, wonderful, and require skill. They're easy, though.
Tip: Put some loc-tite on the D-ring bolt threads and you'll likely never have to mess with them. If your shifter loses a little tension, turn it at the next stop or even while you're riding, if you're careful.
These are compatible with up to 9 speed rear derailers only. Not compatible with SRAM rear derailers.
These are sold as the shifter only.
Manufacturer Information
Rivendell Bicycle Works
2040 N. Main St. #19
Walnut Creek, CA 94596
