The Hope M4 Small/M6 Large Bore Caps are colored inserts for the Mono M4 and Mono M6 Ti calipers. These inserts will fit either the smaller bore cap hole on the M4 OR the larger bore cap hole on the M6. Priced for one insert. Note - You would also need one more M4 Large Bore Cap to fully outfit one M4 Caliper. If you have an M6 Caliper, two more small M6 Bore Caps would be needed to fully outfit one M6 caliper. You would also need a bore cap tool to install them - see our store - we sell it. Choice of Black, Blue, Gold, Red, Silver or Gun Metal Anodized.
