Quick Summary
This bike trailer coupler attachment is a 1 piece bicycle trailer connector for instep and most bike trailers. It uses an angled elbow style and comes as an embedded type coupler, so the fit and connection points are the main details to check before choosing an offer.
The coupler is described as a steel part with a black enamel coating and a connect pin. If you are matching it to an existing bike trailer setup, check the stated hole sizes, insert size and screw nut size against your bike and trailer parts.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Bike trailer coupler attachment for connecting a bicycle to a trailer. |
| Quantity | 1 piece. This is a single coupler set. |
| Coupler style | Angled elbow, embedded type. Check that this is the right style for your trailer setup. |
| Material | Steel with black enamel coating. |
| Bike hole diameter | 0.4 inch / 10 mm. |
| Screw nut fixed in diameter | 0.87 inch / 22 mm. |
| Trailer hole diameter | 0.27 inch / 7 mm. |
| Length | 0.8 inch / 20 mm. |
| Insert part diameter | 0.5 inch / 13 mm. |
| Included pin | Connect pin included with the coupler. |
What to Compare Before Buying
- Hole and insert sizes: Match the 10 mm bike hole, 22 mm screw nut size, 7 mm trailer hole, 20 mm length and 13 mm insert diameter to your existing fittings.
- Coupler style: This is an embedded, angled elbow type. Check that your trailer and bike mount use the same arrangement.
- Quantity: The package includes 1 coupler set, so confirm whether you need one connector or more than one for your setup.
- Connection method: The pin is part of the design, so check that your existing attachment points work with this style of locking connection.
Compatibility, Size and Fit
This coupler is stated as suitable for instep and most bike trailers, but the exact fit depends on the mount sizes and attachment type on your bike and trailer. Measure the bike hole, trailer hole, screw nut area and insert section before ordering.
Because the part is an embedded type attachment, it is best matched by dimensions rather than appearance alone. A close visual match is not enough if the hole sizes or insert diameter differ.
What Else You May Need
You will need a bike and trailer arrangement that accepts this style of coupler. If your current setup uses different hole sizes, a different connector shape or a non-embedded mount, this part will not be the right match.
Before You Decide
Confirm the 1 piece quantity, the angled elbow embedded style and the stated dimensions before choosing an offer. The key fit checks are the 10 mm bike hole, 22 mm screw nut size, 7 mm trailer hole, 20 mm length and 13 mm insert diameter.
Follow the trailer and bicycle manufacturer’s fitting instructions when installing the connector.
