You can use the ProLine products with all available 11-speed chains from Shimano, KMC or Connex.

No, you shouldn't do that because it causes higher wear and has a negative effect on the performance and smoothness of the drivetrain (increased noise development).

You shouldn't do that, because it causes higher wear and has a negative effect on the performance and smoothness of the drivetrain (increased noise development).

If you should use an IZUMI Super Toughness, it is due to this chain, because this chain undergoes a special heat treatment and has a higher strength than other comparable chains. Therefore, the other components wear out faster. If you are not using the chain and other information from the FAQ area does not help, please contact our service team. For this please use our contact form.

This fall, the guarantee/warranty will take effect, if a guarantee / warranty claim is not closed. Please contact us using our contact form.

With the initial versions you can read it off directly from the serial number engraved on the hub right below the logo e.g. 19/10. If you have a QR code, scan it to get all the necessary information.

Yes, your cassette fits to the freewheel by using a 1.85mm spacer, that should usually be supplied with new cassettes.

No, conversion kits doesn't exist yet.

No, unfortunately that is not possible.

Because our flange distances are adapted to the respective installation width and length of the freewheel body.

You can find everything you need in our webshop.

With single sprockets it can happen that they have worked their way into the webs of the freewheel body in the movement direction. With two chain whips you can solve this well in most cases. You have to move the stuck sprocket against the moving direction, with the other whip you block the freewheel. Important: Then you should remove the protruding burr on the freewheel body with a file.

In our download area you will find all important documents that contain information about maintenance intervals and care.

Yes, as long as the bike has a BSA/BSC bottom bracket with an installation width between 68mm and 73mm.

Yes, this is possible, as long as the front sprocket has a bolt circle diameter with 4x104mm. When selecting the sprocket, make sure that the basic transmission ratio of 2.09 is not exceeded. Also, make sure the belt tension is between 28 and 34lbs (35-42.5Hz). Refer to the belt manufacturer's manual for more information and instructions.

No, unfortunately that is not possible. You can only replace the entire shifter, which includes the bowden cable. You can find a replacement in our webshop.

Unfortunately, the shift cable is not interchangeable. But you can reorder a shifter including the bowden cable in our webshop.

Since the maintenance of the Doppio is very complex, we are happy to take over this for you. After purchasing the Doppio, you will receive a 2-year service guarantee including an initial maintenance.

Yes, it should be possible with the help of the Doppio user manual, the required tools and a little technical understanding. Please note, that the guarantee may expire in the event of any verifiable errors during the installation process. You can find more information on warranty and guarantee in the Doppio user manual.

Inside the Doppio there is a so-called planetary gear. In the translated gear (2nd gear) the planets rotate around the clamped sun gear. As a result, the spider/chainring turns faster than the crank or shaft. On the outer circulation of the planets there are small pawls that are required for direct gear (1st gear). As soon as the planets turn faster (2nd gear with crank turn) these pawls engage and disengage, which results in the clicking noise when driving.

This could be for various reasons. As a first step, we recommend to check the position of the bowden cable and the shifting device with the help of our user manual in the download area. If you are unsuccessful, please contact our service staffs using our service contact form.

1st option: direct purchase

From October 2020 you can order the Doppio CX gearbox in our webshop. If you can't wait and would like to pre-order it, just contact us.

2nd option: indirect purchase through a dealer/workshop of your choice

Would you like to have the Doppio installed and buy it from a local dealer/workshop? No problem, just get in touch with us, we will take care of everything else in consultation with the dealer.

No, this is not possible for design related reasons.

The only cranks we have in stock are 175mm lenght.

Yes, in principle almost all JIS-square cranks can be used. However, since the drive side of the Doppio is somewhat shorter due to its design, you should definitely contact us for further details at service@kappstein.de.