Gearbox front sprocket, choose your number of teeth: 16, 17, 18 or 19 teeth.
Chain: 5/8 x 1/4 | 520 | 110054
BSA M20 & M21 in plunger frame.
BSA B31 & B33 with rigid frame and plunger frame.
Part number: 65-3806
Gearbox front sprocket, choose your number of teeth: 16, 17, 18 or 19 teeth.
Chain: 5/8 x 1/4 | 520 | 110054
BSA M20 & M21 in plunger frame.
BSA B31 & B33 with rigid frame and plunger frame.
Part number: 65-3806
| SKU | 65-3506/16 |
|---|