Before you fit our adapter, you must determine whether your bike is approved for trailer use. Check the operating instructions for your bike, ask the manufacturer or ask a bike dealer.

The towing bike must be approved for trailer operation. Riding the trailer with a towing bike that has not been approved by the manufacturer can lead to frame breakage or other material problems. This can result in accidents with life-threatening injuries.

If you are not sure how to install our adapter correctly, please contact a specialist workshop.

Our adapter must be fitted correctly. An incorrectly fitted adapter can come loose while riding and lead to accidents with life-threatening injuries.

You should definitely bear this in mind: 

• Our adapters are only approved for bicycles and pedelecs (max. 25 km/h), not for S-pedelecs or e-bikes from 25 km/h!

• We would like to point out to all dealers and end users that they themselves are responsible for the entire bicycle trailer system and its correct functioning in terms of product liability!

• It is your responsibility to determine the correct thread size of your rear hub on your bike. Do not attempt to fit our adapter with a different thread size to your rear hub. An incorrect thread size can damage your bike. If you are unsure of the correct thread size, please contact us by email or phone and we will be happy to help you. 

• cannot be used with bikes made of carbon or with carbon dropouts and carbon rear triangle!

• Regularly check the correct torque setting and that all components are free of play before using your bike in trailer mode!

• If you do not have a calibrated torque wrench for fitting our adapter, contact a specialist workshop.

FOR ASSEMBLY

IMPORTANT: Always mount the trailer on the left-hand side in the direction of travel!

After you have removed your current M8 x 40 cylinder screw (in FR left) from your rear frame, you can now mount our threaded bolt there.

You will need a torque wrench with a hexagon socket (width across flats 6 mm), the tightening torque for this is 16-18 Nm.

You can then screw our universal adapter together with the black 3mm spacer onto the threaded bolt, but first remove the screw and the two wedge lock washers on the adapter.

To tighten the adapter you will need an open-end wrench SW17mm, or if you have a torque wrench with a long 17mm socket, even better.

The tightening torque for this must NOT be higher than that of the threaded bolt, we recommend max. 16 Nm. You can insert a 6 mm Allen key through the adapter to counter the threaded bolt.

Then you can attach your clutch, the wedge lock washer with the larger inner diameter(ø10.7mm) is always behind the clutch, the wedge lock washer with the smaller inner diameter(ø8.7mm) comes in front of the clutch behind the M8 x 16mm bolt, virtually in a sandwich.

To tighten the clutch properly (the engagement of the teeth of the wedge lock washers must be ensured), we recommend using a ring wrench SW13mm or, even better, a ratchet with a 13mm socket.

When tightening the screw(M8 x 16), make sure that the tightening torque is not transferred to the already tightened threaded bolt and adapter.

You can also tighten the adapter using a 17 mm open-end wrench (to counter it).

The two wedge lock washers from Nord-Lock are the be-all and end-all of our clutch connection, you can see how they work here.