Paul Components Thumbies turn bar-end shifters into flat-bar shifters.Thumbies have a hinged clamp for an easy installation They have a shifter mounting boss that fits Shimano bar end shifters and most Shimano downtube shifters Machined in the USA of 6061 aluminum
| Model | Thumb Shifter Mount |
| Shifter Interface | Shimano Index |
| Clamp | 22.2mm |
| Color | Silver |
| Package | Pair |
| Clamp Size | 22.2Mm |
| Mount Type | Standard |
Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Product title
Vendor