QUESTIONS?

Have a look at our FAQ to see if we have already answered your question.

If you have any other questions, you can get in touch with your i:SY specialist dealer directly. You will find them in our dealer search.

Our Customer Service would love to hear from you if you have any suggestions or catalogue requests.We can be reached between 8 a.m. and 5 p.m. on Mondays to Thursdays and 8 a.m. and 2 p.m. on Fridays.

i:SY GmbH & Co.KG
Longericher Straße 2 
D-50739 Köln
Mail: info@iSY.de

Notice for i:SY bikes for model year 2022 onwards
i:SY GmbH & Co. KG is responsible as the producer for bikes for all customers who own an i:SY from model year 2022 onwards. Your i:SY specialist dealer is your direct local contact. They will maintain close contact and dialogue with us in the event of any defects or warranty claims and will be glad to provide you with further assistance.

i:SY GmbH & Co.KG
Mail: info@iSY.de 

Notice regarding i:SY bikes up to model year 2021
As the manufacturer, only Hartje is responsible for i:SY bikes from the model year 2021 or earlier. Your i:SY dealer from whom you have purchased your bike is your direct local contact. They will maintain close contact and dialogue with Hartje in the event of any defects or warranty claims and will be glad to provide you with further assistance. Thank you very much!

Hermann Hartje KG 
27318 Hoya 
Mail: info@hartje.de