Shimano Brakes|Replacement Parts|Ultegra BR-R8170 Flat-Mount Road Disc Caliper Fixing Bolt (Black) 30mm (Bolt C2) (25mm Thick Chainstay)

Shimano Ultegra BR-R8170 Flat-Mount Road Disc Caliper Fixing Bolt Description:

The ShimanoUltegra BR-R8170 Flat-Mount Road Disc Caliper Fixing Bolts are designed to attach a flat-mount road bike disc brake caliper to the rear triangle of a bicycle frame. The length is determined by the thickness of the frame, not the actual length of the bolt.

Note: Sold individually.

Features:

• Fixing Bolt C2 attaches rear mounting plate to frame
• See compatibility tab for full list of compatible derailleurs

This product is expected to become available for purchase on Friday, July 17, 2026