Shimano R160P/S Disc Brake Adapter – 160mm Rotor, Post Mount

The Shimano R160P/S disc brake adapter allows you to correctly run a 160mm rotor on a frame or fork with a 51mm post mount using a 74mm post mount caliper. It’s a straightforward, OEM Shimano solution for proper caliper positioning and reliable braking alignment.

This adapter is commonly used when setting up or replacing hardware on post mount frames and forks that require precise spacing for a 160mm rotor.

Key Features
• Shimano OEM disc brake adapter
• Enables correct caliper spacing for a 160mm rotor
• Post mount to post mount interface
• Designed for consistent alignment and braking performance
• Mounting hardware included

Compatibility & Use Notes
• Rotor size: 160mm
• Frame mount: Post Mount, 51mm
• Caliper mount: Post Mount, 74mm
• Designed for use with Shimano post mount brake calipers
• Not compatible with flat mount systems
• Rotor size must match adapter specification

Service / Ownership Context
Using the correct adapter is critical for brake alignment and pad wear. Always verify rotor diameter and mount standards before installation. Torque bolts evenly and re-center the caliper after mounting to prevent rub and uneven braking.

Fit & Use Signals
• You’re running a 160mm rotor
• Your frame or fork uses a 51mm post mount
• Your brake caliper uses a 74mm post mount
• Not a fit for flat mount frames or calipers
• Not a fit for rotor sizes other than 160mm