Can I purchase replacement parts separately? January 13, 2021 05:46 Unfortunately, we don’t sell replacement parts separately as of now. However, if you have any quality-related issues, we will help you with a replacement. Related articles Where can I get the assembly and user guide? What is the difference between T50 and T50 Air? Where can I try out SIDIZ chairs? Do your items require assembly? There is a line back of the seat. Is it defective?