SPYRE - Weight: 154g per caliper. - Dual sided actuation. - Works with ALL cable actuated road levers. Compression-less (linear strand) housing is highly recommended. - Comes with TRP ultra-grip semi-metallic pads. - Calipers are compatible with Shimano M525/M515 pads. - 160mm rotors recommended on front wheel. - Rotors, adapters, and flat mount mounting bolts sold separately. - All flat mount calipers being mounted to the fork require the FF-5 Front Flat Mount 140/160mm adapter.