From their FAQ page[0], What happens if the string snaps? It takes 10 minutes to replace, by the rider. No specialist knowledge required, worth watchi

From their FAQ page[0], What happens if the string snaps? It takes 10 minutes to replace, by the rider. No specialist knowledge required, worth watching the tutorial on the website. No tool required, no need to remove the rear wheel, or other parts. Spare string is provided, and neatly stored in the seat pole. The spare comes with instructions to install. 0: https://www.stringbike.com/stringbike_support_questionsandanswers.html https://www.stringbike.com/stringbike_support_questionsandan...