Pins sizes are written (ever so tiny) on the pins themselves. Use our chart to determine the correct size for your rim.
Pins can be purchased by clicking here.

Use our Pin Sizing Chart to determine the correct pin color for your rim. As a general rule, the pin size is +3.5mm wider than your rim's width.
AIRLESS SIZE | Small | Medium | Long |
16x1 3/8 | 22.5 | 23.5 | 24.5 |
16x1.5 | 22.5 | 23.5 | 24.5 |
18x1.25 | 21.5 | 22.5 | 23.5 |
20x1 1/8 | 17.5 | 18.5 | |
20x1.25 | 21.5 | 22.5 | 23.5 |
20x1.5 | 22.5 | 23.5 | 24.5 |
24x1.5 | 22.5 | 23.5 | 24.5 |
24x1.75 | 21.5 | 22.5 | 23.5 |
26x1 3/8 | 21.5 | 22.5 | 23.5 |
26x1.75 | 21.5 | 22.5 | 23.5 |
700x23c | 16.5 | 17.5 | 18.5 |
700x25c | 19.5 | 20.5 | 21.5 |
700x28c | 17.5 | 18.5 | 19.5 |
700x32c | 21.5 | 22.5 | 23.5 |
700x40c | 22.5 | 23.5 | 24.5 |
700x28c Portal | 20.5 | 21.5 | 22.5 |