Adapt.

Whether you're trying to mount your 160mm rotor with an ISO 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 front brake and an "R" denotes 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 with either a "P" (post-mount) or an "S" (ISO). To alleviate confusion, we've reiterated the front or rear specification at the back.

To recap, model number SM-MA-F160, P/S Front is for the front brake (F), it accommodates a 160mm rotor (160), it holds a post-mount caliper (P), and it attaches to an ISO fork mount (/S).

  • Durable alloy construction
  • Mounting hardware included
  • Compatible with ISO and post-mount calipers and frames/forks
  • Reviews
  • Q & A

Part works great, Part #'s not so much

  • Familiarity: I've put it through the wringer

If you need it you need it. Simple adapter to hook it up.

Hit us up if you have any questions on the application for your bike.

For forks with 180mm mounts

    My fork has 160mm mounts so this one doesn't work for using a 203mm rotor.

    A must.

      Shimano's part numbers can be confusing. Be sure to hit the "Chat Now" button to get help from a Gearhead who can help confirm the correct adapter for your frame.

      good luck!!

      • Familiarity: I've used it several times

      work great if you can figure out shimanos part numbers and fitment!!!....wooo hoooo!

      Necessary

      • Familiarity: I've put it through the wringer

      Great little adapters to ensure that your brakes fit your bike.

      Required parts

      • Familiarity: I've put it through the wringer

      If you want to follow the trend of having a 180mm rotor for the rear brake, you will need this if you have a Santa Cruz or any other brand that uses an international standard brake mount.

      Does its job

      • Familiarity: I've used it once or twice and have initial impressions

      Does what you need it to do!

      Necessary

      • Familiarity: I've put it through the wringer

      Works well with not only Shimano, but other brands as well. Just be sure to get the correct one for your application and should be smooth sailing.

      Does what it should

        Easy to use and does exactly what it needs to do.

        Works as intended

        • Familiarity: I've put it through the wringer

        You will likely need one or two of these to mount up your disc brakes, get the right ones for your set up and youre good to go!

        Mount it up

        • Familiarity: I've put it through the wringer

        Durable and easy to install, brake adapters are necessary on many frames and forks if you are running a larger rotor size.


        Works with Avids Too

        • Familiarity: I've put it through the wringer

        These work for any brakes as far as I know, I used them to mount my Guide brakes with some 203 rotors. So if you have trouble finding certain adapters for certain brands in stock ever, know that you can cross brands since the spacing is all standardized. Full disclosure, can't guarantee it works with all brands/caliper shapes. But I have used shimano adapters with several sets of Guide brakes over the last few years so I can say that works for sure.

        Works great.

        • Familiarity: I've put it through the wringer

        These work great and are easy to install.

        they're great!

        • Familiarity: I've put it through the wringer

        These make it super easy to swap to a larger or smaller brake rotor with ease. Just make sure you know which one to buy. The description breaks it down for you if you're confused.

        Necessary for larger rotors

        • Familiarity: I've used it several times

        Got a fork that’s built for a smaller rotor than the one you want to use? This is the answer. Just make sure you order the right one for the mount and caliper.

        Simple

        • Familiarity: I've put it through the wringer

        Easy to use and a good option for upgrading your rotors to a larger diameter

        great

        • Familiarity: I've put it through the wringer

        i love running bigger rotors so In return I love that this lets me run them! never had an issue with these!

        It Works

        • Familiarity: I've put it through the wringer

        If you are using Shimano brakes this is a must have. Super easy to match up what you need.

        Gotta have it

        • Familiarity: I've put it through the wringer

        You gotta have adapters if running a larger rotor. The Shimano adapters do the trick.

        Still an adapter

          It does adapt correctly. Black anodized is nice. They should mill these out for weight savings haha