This is an upgrade set of BMX-class precision freewheels (like what's included in the Forward). We recommend it for people who want to use the chair at high speed or who want to navigate with extreme precision over challenging terrain.
If you add this to your cart at the same time as a GRIT Freedom Chair 3.0, we will upgrade your chair with these during assembly. If you already own a GRIT Freedom Chair, you will need a bicycle shop to help with the installation. This includes two freewheel drivetrain and coupling assemblies, one for each side of the chair.
Want to dive into the nitty gritty? This blog provides more technical information.