Product Description Shimano M6 x 37.9 brake caliper mounting kit for XT BR-M8100 and SLX BR-M7100 This Shimano caliper mounting bolt has an M6 x 37.9mm thread and comes with a snap ring whose revised shape makes it compatible with the BR-M8100, BR-M8120, BR-M7100 and BR-M7120 calipers. In addition, the mounting bolt assembly, which also includes two washers, is still suitable for older XT, SLX and other disc brakes, replacing the Y-8G498020 set. The bolt is used in conjunction with the SM-MA-F180P/P2 brake adapter for post mount to post mount installation with 160 or 180 mm brake rotor. Technical Information:Threads:M6 x 37.9 mmCompatibility:Brake Adapter: SM-MA-F180P/P2 Brake Calliper: BR-M8100BR-M8120BR-M7100BR-M7120BR-U8000BR-U8020 Also suitable for (as a replacement for Y-8G498020): BR-M8000BR-M8020BR-M785BR-M820BR-M7000BR-M675BR-M666BR-M640BR-M6000BR-M595BR-M596BR-M446BR-M365BR-M375BR-M395BR-M315BR-MT500BR-MT520BR-MT400BR-MT420BR-MT200BR-T675BR-R517BR-R317Manufacturer Number:Y-8G498020 Contents:1 x Shimano fastening bolts1 x Shimano barrel circlip2 x Shimano washers Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com