Hitch Finder - Thru Axles

If the rear wheel of your bicycle is attached with a thru axle, then it won’t be possible to use the Universal Hitch that came with your trailer. The diameter of the thru axle is too large to fit through the hole in the hitch. However, thanks to Croozer’s specially developed thru axle system, it is nevertheless possible to pull your Croozer trailer. Simply replace your existing thru axle with a Croozer thru axle with integrated hitch or adapter.

It’s important that you choose the right Croozer thru axle for your bicycle. In order to do so, you will need to know the axle length and thread pitch. If you do not know these measurements and they are not specified on the existing thru axle, then follow the steps listed below:

Axle

1. Download the template for measuring your existing thru axle from this page. Print out the template in actual size (100%) on A4 paper so that you have the right scale!
2. Unscrew the existing thru axle from your bike (following the applicable instructions in the user manual!).
3. Hold the threads of the thru axle up to the template to determine the thread pitch. Make a note of the thread pitch.
4. Now hold the thru axle from your bicycle up to the template to measure the length of the axle. Make a note of the axle length.

HITCH / ADAPTER

The next question is, which axle head do you need for your Croozer thru axle. There are three different versions:

1. “N__” axle head: If your Croozer trailer is equipped with the Click & Crooz® system (= grey push button on the hitch connector) and the rear-wheel dropouts on your bicycle frame are flat and not blocked by other parts or components. Solution: __“N” axle head with 10mm base.
2. “XL__” axle head: If your Croozer trailer is equipped with the Click & Crooz® system (= grey push button on the hitch connector) and the rear-wheel dropouts on your bicycle frame are either not flat or blocked by other parts or components. Solution: __“XL” axle head with 20mm base.
3. “A__” axle head: Your Croozer trailer is not equipped with the Click & Crooz® system? Then you need the __“A” axle head with an adapter for mounting all standard axle hitches.

Now, all you have to do is choose the right product based on your notes. An overview of the available thru axle hitches can also be found on the sheet with all thru axle hitch solutions. You can purchase the listed items from your local Croozer dealer.

Hitch “N”

If you have Syntace dropouts, the normal hitch head “N” will not fit to your bike. Choose version “XL”.

Hitch “XL”

For a thread pitch of 1.0 mm, only the XL hitch will fit.
Now choose the axle length that you have measured as described above:

L = 161 mm (hub width 142 mm) = Code: 12 - 167 - 1.00 XL (Art. 122501918 with built in spacer)
L = 167 mm (hub width 148 mm) = Code: 12 - 167 - 1.00 XL (Art. 122501918 without using the supplied spacer)
L = 175 mm (hub width 197 mm) = Code: 12 - 181 - 1.00 XL (Art. 122500120 with built in spacer)
L = 217 mm (hub width 197 mm) = Code: 12 - 217 - 1.00 XL (Art. 122502018)

Hitch “A”

You need a thru axle with an adapter in order to attach an existing, standard axle hitch.
Now choose the axle length that you have measured as described above:

L = 181 mm = Code: 12 - 181 - 1.00 A (Art. 122500220)
L = 217 mm (hub width 197 mm) = Code: 12 - 217 - 1.00 A (Art. 122530218)

Hitch “N”

If you have flats dropouts that provide enough clearance, the normal hitch head “N” will fit your bike.
Now choose the axle length that you have measured as described above:

L = 165 mm (hub width 135 mm) = Code: 12 - 165 - 1.50 N (Art.122500318)
L = 172 mm (hub width 142 mm) = Code: 12 - 178 - 1.50 N (Art. 122500418 with built in spacer)
L = 178 mm (hub width 148 mm) = Code: 12 - 178 - 1.50 N (Art. 122500418 without using the supplied spacer)
L = 209 mm (hub width 177 mm) = Code: 12 - 209 - 1.50 N (Art. 122500518)
L = 229 mm (hub width 197 mm) = Code: 12 - 229 - 1.50 N (Art. 122500618)

Hitch “XL”

The rear-wheel dropouts on your bicycle frame are either not flat or blocked by other parts or components, so you need the extra long hitch “XL”.
Now choose the axle length that you have measured as described above:

L = 165 mm (hub width 135 mm) = Code: 12 - 165 - 1.50 XL (Art.122502118)
L = 172 mm (hub width 142 mm) = Code: 12 - 178 - 1.50 XL (Art. 122501118 with built in spacer)
L = 178 mm (hub width 148 mm) = Code: 12 - 178 - 1.50 XL (Art. 122501118 without using the supplied spacer)
L = 209 mm (hub width 177 mm) = Code: 12 - 209 - 1.50 XL (Art. 122501218)
L = 229 mm (hub width 197 mm) = Code: 12 - 229 - 1.50 XL (Art. 122501318)

Adapter “A”

You need a thru axle with an adapter in order to attach an existing, standard axle hitch.
Now choose the axle length that you have measured as described above:

L = 165 mm (hub width 135 mm) = Code: 12 - 165 - 1.50 A (Art. 122530318)
L = 178 mm (hub width 148 mm) = Code: 12 - 178 - 1.50 A (Art. 122530518 without using the supplied spacer)
L = 209 mm (hub width 177 mm) = Code: 12 - 209 - 1.50 A (Art. 122530618)
L = 229 mm (hub width 197 mm) = Code: 12 - 229 - 1.50 A (Art. 122530718)

HITCH “N”

If the dropouts on your bike frame are easy to reach, you can choose the normal hitch “N”.
Now choose the axle length that you have measured as described above:

L = 174 mm (hub width 142 mm) = Code: 12 - 180 - 1.75 N (Art. 122500718 with built in spacer)
L = 180 mm (hub width 148 mm) = Code: 12 - 180 - 1.75 N (Art.122500718 without using the supplied spacer)
L = 192 mm (hub width 142 mm) = Code: 12 - 198 - 1.75 N (Art. 122500818 with built in spacer)
L = 198 mm (hub width 148 mm) = Code: 12 - 198 - 1.75 N (Art. 122500818 without using the supplied spacer)
L = 209 mm (hub width 177 mm) = Code: 12 - 209 - 1.75 N (Art. 122500918)
L = 229 mm (hub width 197 mm) = Code: 12 - 229 - 1.75 N (Art. 122501018)

HITCH “XL”

If the dropouts on your bike frame are hard to reach, e.g. because they are too close to your rear carrier stays, you can choose the extra-long hitch “XL”.
Now choose the axle length that you have measured as described above:

L = 174 mm (hub width 142 mm) = Code: 12 - 180 - 1.75 XL (Art.122501418 with built in spacer)
L = 180 mm (hub width 148 mm) = Code: 12 - 180 - 1.75 XL (Art. 122501418 without using the supplied spacer)
L = 192 mm (hub width 142 mm) = Code: 12 - 198 - 1.75 XL (Art. 122501518 with built in spacer)
L = 198 mm (hub width 148 mm) = Code: 12 - 198 - 1.75 XL (Art. 122501518 without using the supplied spacer)
L = 209 mm (hub width 177 mm) = Code: 12 - 209 - 1.75 XL (Art. 122501618)
L = 229 mm (hub width 197 mm) = Code: 12 - 229 - 1.75 XL (Art. 122501718)

ADAPTER “A”

You need a thru axle with an adapter in order to attach an existing, standard axle hitch.
Now choose the axle length that you have measured as described above:

L = 174 mm (hub width 142 mm) = Code: 12 - 180 - 1.75 A (Art. 122530818 with built in spacer)
L = 180 mm (hub width 148 mm) = Code: 12 - 180 - 1.75 A (Art. 122530818 without using the supplied spacer)
L = 192 mm (hub width 142 mm) = Code: 12 - 198 - 1.75 A (Art. 122530918 with built in spacer)
L = 198 mm (hub width 148 mm) = Code: 12 - 198 - 1.75 A (Art. 122530918 without using the supplied spacer)
L = 229 mm (hub width 197 mm) = Code: 12 - 229 - 1.75 A (Art. 122531018)