Shimano Ultegra BR-R8170 disc brake caliper Fixing Bolt C2 for 20mm mount.

The following are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.

- Shimano Ultegra BR-R8070
- Shimano 105 BR-R7170

The following are a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.

- Shimano Dura-Ace BR-R9270

Genuine Shimano replacement part.