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ShimanoShimano · Brake Adapters & Mounts

BR-RS505 Front Caliper Mount Bracket

Front flat-mount bracket for adapting BR-RS505 calipers to compatible rotor sizes.

$29.99

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Front
Position
Flat mount
Caliper mount type
140 / 160 mm
Rotor compatibility
160 / 180 mm
Rotor compatibility

Overview

A suitable choice for anyone replacing a front flat-mount bracket or configuring a compatible BR-RS505 brake caliper around a 140, 160 or 180 mm rotor.

This front caliper mount bracket is designed for a flat-mount fork and BR-RS505 front brake caliper. It provides the mounting interface needed to position the caliper correctly when using the specified rotor-size combinations.

The easy flip-flop bracket system gives you two compatible rotor options with one bracket: use it for 140 mm or 160 mm rotors, or for 160 mm or 180 mm rotors, depending on the flat-mount configuration of your fork. That makes it a useful replacement when changing rotor size or restoring a compatible brake setup.

Before ordering, check your fork’s flat-mount spacing, front position and intended rotor size. This is a mounting component rather than a complete brake caliper, so installation should be completed with the appropriate hardware and alignment checks.

Front flat-mount application

Designed for front forks using the flat-mount brake standard.

BR-RS505 compatibility

Made for use with the BR-RS505 front brake caliper.

Two rotor-size combinations

One bracket supports either 140/160 mm or 160/180 mm rotor combinations, subject to the fork configuration.

Easy flip-flop design

The reversible bracket arrangement makes it straightforward to select the compatible rotor-size position.

Aluminium construction

The bracket is made from aluminium for a practical, lightweight mounting solution.

Useful replacement component

A direct choice when an existing front caliper mount bracket needs replacing or a compatible rotor configuration is being changed.

Ask about this product

Specifications

General

Product name
Front caliper mount bracket BR-RS505
Position
Front
Application
Flat mount brake caliper
Compatible brake caliper
BR-RS505
Interchangeability
A

Compatibility

Fork/frame mount type
Flat mount ø140/160; front
Rotor sizes with bracket
140 mm and 160 mm
Fork/frame mount type
Flat mount ø160/180; front
Rotor sizes with bracket
160 mm and 180 mm
System note
One bracket is compatible with two rotor sizes

Identification

Shimano code number
Y8N230000
Replacement-part description
Front Caliper Mount Bracket

Technology

Easy flip-flop bracket system

Use one front bracket across two compatible rotor sizes. The system supports 140/160 mm or 160/180 mm combinations, depending on the flat-mount fork configuration.

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