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Disc Brake Adapters

4 out of 5 stars
1 Review
$8.24 - $12.99
Up to 25% off

Style & Size:


Why We Like The Disc Brake Adapters

Whether you're trying to mount your rotor with an IS or post-mount setup, we've got the right Shimano Disc Brake Adapters for the job. All you need is the skeleton key to understanding Shimano's admittedly byzantine model naming convention. SM-MA stands for Shimano Mount Adapter, so that'll be universal across models and can be safely ignored now that you're here.

The rest of the model name is the important part. An "F" denotes the front brake and an "R" denotes the rear brake. The following number (160, 180, or 203) is, of course, the rotor size, with special parentheticals for 203mm rotor conversion. The final two initials respectively describe the caliper type and the frame/fork mount type, corresponding to either ISO or post-mount.


  • Shimano brake adapters for various rotor sizes
  • Compatible with ISO and post-mount calipers and frames/forks
  • Mounting hardware included
  • Item #SHI0108
Attachment Type
post, IS
mounting hardware
mountain biking, cycling
Manufacturer Warranty
2 years

Overall Rating

4.5 based on 77 ratings

Review Summary

5 Stars - 64 reviews
4 Stars - 8 reviews
3 Stars - 5 reviews
2 Stars - 0 reviews
1 Stars - 0 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

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