Shimano mounting bolts for flat-mount disc brake calipers.
Bolt length: 38mm
Chainstay thickness: 25mm
Attaches rear mounting plate to frame
Required bolt is determined by chainstay thickness, not actual bolt length.
 
This Caliper Fixing Bolt C can also be used on the following brakes:
Shimano Ultegra BR-R8170
Shimano Ultegra BR-R8070
Shimano 105 BR-R7070
Shimano Tiagra BR-4770
Shimano Deore XT BR-M8110
Shimano SLX BR-M7110
Shimano GRX BR-RX810
Shimano GRX BR-RX400
Shimano BR-RS805
Shimano BR-RS405
Shimano BR-RS305
Shimano BR-UR300
Shimano Metrea BR-U5000