Shimano SM-MA Disc Brake Mount Adapters

Shimano SM-MA Disc Brake Mount Adapters for mounting disc brake calipers onto a bike frame or fork. These adapters enable the use of 160mm, 180mm or 203mm rotors on most Postmount or IS Mount frame/fork combinations.

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Forks with IS tabs:

160mm rotor use: SM-MA-F160P/S

180mm rotor use: SM-MA-F180P/S

203mm rotor use: SM-MA-F203P/S

Frames with IS tabs:

160mm rotor use: SM-MA-R160P/S

180mm rotor use: SM-MA-R180P/S

203mm rotor use: SM-MA-R203P/S

Forks & Frames with 140mm Post mount:

160mm rotor use: SM-MA-F180P/P2

Forks & Frames with 160mm Post mount:

160mm rotor use: NO ADAPTER

180mm rotor use: SM-MA-F180P/P2

203mm rotor use: SM-MA-F203P/P

Forks & Frames with 180mm Post mount:

180mm rotor use: NO ADAPTER

203mm rotor use: SM-MA-F203P/PM

220mm rotor use: SM-MA-F220P/PM