Honda CB125 Fork Seals
The Honda CB125 runs a 27 mm conventional front fork.Every kit here is verified by the manufacturer to fit this exact bike. Fork seals can share a size and still not seat in a different fork, so we only list what is confirmed for your bike.
- Fork tube27 mm
- Fork typeConventional
| Kit | Years | Seal size | Replaces OEM |
|---|---|---|---|
| 55-101 | 1976–1985 | 27x39x10.5 | n/a |
| 55-104 | 1990 | 31x43x10 | n/a |
Verified fork kits we stock for your Honda CB125

Fork Seal Kit
Fork Oil Seal Kit — Honda CB125S (1976-1985) +
$18.60

Fork Seal Kit
Fork Oil Seal Kit — Honda ADV150 (2021-2023) +
$19.12
Fork oil for your Honda CB125
A fork-oil change on the Honda CB125 uses 10wt fork oil. Factory fill: OE ATF/10W-30 engine oil (pre-fork-oil era); modern 10wt.













