Like much of life, making your Shimano disc brakes work with your 160mm rotor is easy --once you learn how to figure out which adapter you need. Whatever you have, we can either sell you the adapters to make it work, or tell you that what you have is enough.
You need to know three things -- what kind of mount your Shimano disc caliper is, International Standard (ISO) or post mount. If it goes on the front, you need to know what your fork is: ISO, post-mount, or a few special cases (Marzocchi 20mm axle, Boxxer-type). And, you need to know the rotor size that you're trying to fit -- in this case, it's 160mm.
If you're trying to diagnose what you already have and/or what you need, here's how to do it. The Shimano adapters all have a model number that starts with SM. The Mount Adapter acronym is MA. Front brake is F. Rear brake is R. Rotor Size is 140, 160, 180, or 203. Caliper Mount Type will be S for ISO/International A, and P will represent Post. And the last letter will be for the frame or fork mount type: S for ISO/A, P for Post, B for Boxxer, Z for Marzocchi 20mm Axle as well as QR20Plus and DH ISO. Thus an adapter that reads SM-MA-F-203S/P is Shimano Small Parts Mount Adapter Front 203mm Rotor with ISO caliper on a Post type fork.
With the first drop down box, please select the mount that corresponds with the fork or frame you are using. With the second drop down box, please select the type of caliper you have -- Post or International Standard (ISO).
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Share your thoughts
I bought this to match up a 203 rotor on a Fox 40 and it works perfectly. If you are using Shimano brakes this is a must have.
is there a rear disc convertion or a non disc bike
Yes there is. Upgrading your frame to a new one with built in brake mounts is your best choice, but if that isn't an option, you can try this! http://2btherapy.com/bikes/brake-therapy-conversion-kit
Works great! tried other styles, and Shimano is the best!
I noticed all options above include IS attachment, EXCEPT the pic of the "203 front" which appears as a post mount adapter for 8" remaining 74mm; such as all new shimano brakes are.
BIG QUESTION: if I order the 203 front will I receive the 74 to 74mm, and excuse the IS designation (the photo goes with this selection, i believe). Thanks!!
I pitty da foo...
I would not excuse the designation. Probably sold out of the 74-2-74 mounts. If it says IS it most likely is
Well pitty putty-
I'll be the eternal optimist; six designations, six pics, and one is P/P, good for the return at least and a damn good price as a generic adapter for all the mutts out there.
Which adapter do I use for post mount rear frame tabs (new Turner have PM rear instead of 51mm IS)
Choose the Rear IS Frame for the size of rotor you are running. So all three will work but if you are running 160mm rotors get the 160 adapter.
Standard Avid and Shimano post mount brakes will not need an adapter for 160mm rotors. Use one of them. You should not be able to run IS mount rear calipers on this frame. There maybe an adapter - but the rotors will have to be bigger - 203mm witch most likely will not fit the frame.
these work for Hayes Stroker Trails with 7" rotors on a Fox 32RLC with the IS mount.
I'm comfused, the item # shi0108 fits in a post mount fork with IS caliper and 160 mm rotor?
this adapter is to convert the post style mounts to shimano style mounts. If you have a 160 mm rotor, choose the Front 160. Or get a new fork.
the 180 rear adaptor will fit the 170mm rotor?
Just a guess here, but that doesn't seem like it would be the hot set up. It would probably sorta work, but since the 180 adapter sets the caliper further from the axle, I think the pads might not get full contact with the rotor. The result of that would be poor braking and uneven/fast pad wear. What 170mm rotor are you rocking? Magura?
Brake track is very crucial, so caliper placement is important. 5mm shims may work on a 160 setup- if you can't find the correct adapter which I suggest.