tacx.com/service/manuals or follow the QR-code below. For an interactive ride on a Tacx Smart trainer you may use the. Tacx apps, but you can Free download of your Tacx Booster T2500 User Manual. Still need help after reading the user manual? Post your question in our forums. (20 pages). Fitness Equipment Tacx Booster Assembly. (20 pages). Fitness Equipment Tacx Cosmos Assembling Instructions. (2 pages)Manuals. Important Safety and Product Information. Revision --. Apr 2022. 190-02068-13. Owner's Manual. Revision --. Oct 2020.