Trailer Hitch Adapter — Female M12 to Male M10 for Ebike Hub Motors
This compact steel adapter converts an M12 rear hub motor axle thread to a male M10 fitting so you can attach a trailer without modifying your dropout. Designed for Eunorau ebikes and hunting trailers, it installs onto the axle nut to provide a secure, low-profile hitch point.
Benefits
- Attach a trailer quickly and securely without changing your bike’s dropout or axle setup.
- Keeps the trailer connection low-profile so it won’t interfere with wheel alignment or handling.
- Simplifies using Eunorau trailers and accessories — no custom machining or parts required.
- Durable steel construction reduces the need for frequent replacements, saving time and hassle.
Features
- Converts internal M12 (female) thread to external M10 (male) thread for trailer mounting.
- Installs directly onto the rear hub motor axle nut for a secure attachment point.
- Compact 18 mm install length keeps the hitch close to the axle for a neat fit.
- Black finish for a discreet appearance that matches most ebike hardware.
- Can be mounted on either left or right side of the motor—observe cable routing constraints (see specifications).
Specifications
- Brand: Eunorau
- Color: Black
- Material: Steel
- Internal thread (female): M12 × P1.25 mm
- External thread (male): M10
- Install length: 18 mm
- Compatible axle type: M12 rear motor axle on ebikes
- Compatible trailer: Eunorau Two-Wheels Hunting Trailer and similar M10-mounted trailers
- Compatible Eunorau models (examples): DEFENDER-S, UHVO, DEFENDER, G30-CARGO, Rear-drive Flash, Flash AWD
- Important installation note: If mounted on the left side, the hub motor cable must not exit to the left of the axle center; if mounted on the right side, the cable must not exit to the right of the axle center. Ensure cable routing is clear before final installation.
