Trp spyre caliperthe spyre is a mechanical disc brake that offers superior performance with incredibly easy setup this is a dual sided mechanical disc brake caliper where both pads actuate providing even and precise clamping force this translates into even pad and rotor wear trp have added a simple cable barrel adjuster so the pads can be easily adjusted tool free no longer is there the drag of the fixed side adding uneven wear or worse warping your rotors all of this in an incredibly thi