What goes must stop. Purchase rotors for your disc brake wheels and we'll install them for you. Price is per rotor. Ultegra rotors are finally available in both 140- and 160mm sizes.
Centerlock hub rotor shim (pack of 4)
Disc Brake Centerlock Rotor Lockring
Kool Stop Dura 2 Brake Pads (for alloy rims)
SwissStop BXP Brake Pads (for ceramic coated rims)