Original Sachs coaster brake rear hub compatible with various mopeds.
This rare hub is the latest, third generation, featuring an aluminum shell. It is compatible with various makes and models featuring 17-inch rims. These include, for example, the Zündapp Belmondo, Hercules 621, DKW Hippie, Bonanza, and Express, as well as many other models equipped with Sachs 503 HG engines and 17-inch wheels.
The sprocket, with its 37 teeth, is riveted and can be replaced.
The coaster brake hub is shipped without a brake anchor plate. The wheel axle, including all internal components, is included.
Note: New coaster hubs must be installed by a qualified professional in accordance with the relevant factory documentation. The bearing play must be checked after installing the brake anchor plate and readjusted if necessary. You’ll find our tutorial on this below. Improper handling and any resulting damage do not constitute grounds for a warranty claim.
You can find additional hub bodies, an alternative sprocket, and matching screws, as well as a brake pad and overhaul kits, in the accessories section.
NOS – New from old inventory.
| Manufacturer | Sachs |
| Material | Aluminum, Steel |
| Surface | galvanized (blue), chrome-plated |
| Ø drum | 90 mm |
| Thread type | MF10.5x1 (fine pitch thread) |
| Ø axle | 10.5 mm |
| Area of application | Original |
| Number of spoke holes | 36 pcs |
| Ø bolt circle | 105.5 mm |
| Sachs |
| Zündapp Belmondo |
| Hercules |
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