I was so excited to upgrade from a wheel-on Kinetic trainer to a new Kickr. I didn’t realize that the cassette that is included on the trainer wouldn’t be compatible with my bike. The included cassette is 11 speed, but my bike is only a 9 speed. I need to purchase a new cassette for the trainer, and I just want to make sure that I am getting the right thing. The current cassette on my bike is a SRAM 11-25, and the other components are Shimano Tiagra. I have found some SRAM 9 speed cassettes, but I only find 12-25. Should that make a difference?
Plan B is to put my Domane on the trainer and just buy a new bike for outside .