Shimano XTR adapter for post-mount front MTB disc brakes – ISMMA90F160PS

The Shimano XTR ISMMA90F160PS adapter is designed for fitting a front MTB disc brake caliper to a fork fitted with a Postmount mount, where the installation requires an adaptation from the IS (International Standard) standard. This accessory enables a neat, reliable fit that is perfectly suited to compatible Shimano disc braking systems.

Designed for mountain bikers, this Shimano brake adapter facilitates the installation of a caliper onto a fork and allows the caliper’s position relative to the disc to be adjusted. Its design meets the requirements of the Shimano XTR range, renowned for its high-quality components for competitive mountain biking.

The ISMMA90F160PS is a practical solution for replacing an existing adapter or fitting an Shimano braking system to a fork with a different mounting configuration. It is particularly useful when changing the fork, calliper or disc diameter, provided that compatibility with the relevant standards is carefully checked before fitting.

Key features of the ISMMA90F160PS Shimano XTR adapter

• Shimano XTR adapter designed for MTB disc brake systems.
• Designed for front-wheel mounting.
• Compatible with a Postmount/IS mounting configuration in line with the model’s specifications.
• Allows the position of the brake caliper on the fork to be adjusted.
• Ideal solution for refurbishing, replacing or adapting the braking system.
• Shimano -manufactured to ensure precise and reliable fitting.
• Manufacturer’s part number: ISMMA90F160PS.

Why use a mountain bike disc brake adapter?

Not all forks and disc brake calipers use the same mounting standard. The IS (International Standard) and Postmount systems use different mounting configurations. An adapter therefore enables certain components to be made compatible with one another and ensures the caliper is correctly positioned in relation to the disc.

However, the adapter must be chosen carefully: the mounting standard, front wheel, disc diameter and caliper model are all factors to check before purchasing. An incorrect combination can lead to misalignment of the caliper and compromise braking performance.