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Convert to 180mm disc brake rotor


pembo6's picture

By pembo6 - Posted on 06 April 2013

NB: Originally posted elsewhere on the Global Riders Network and appears via syndication.

I've got a set of Avid Elixir 3 disc brakes. Currently have 160 front rotor.

I am getting new wheels that use shimano centrelock discs and figure I will upsize to a 180mm front rotor.

It all seems so confusing what adaptor I need to buy to convert the Elixirs from 160 to 180.

Can anyone please advise what adaptor I need. Thanks for the help.

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DigDig's picture

From your post you have 160 rotors now and you have post mount to go to 180 rotor yes you need a 160 to 180 avid post mount adaptor.Otherwise your rotor will not turn as it will be 20mm to big.

pembo6's picture

Yeah that's it. Post mount forks. Current front calliper Boltz straight to fork posts and works perfect with 160 rotor.

So I need a 160-180 avid adaptor.

Is the adaptor Avid specific? Or will any 160-180 adaptor work As long as it is post mount. ??

shano's picture

If your fork has post mount...straight in then you need a post to post adaptor.
PS. I had bought a post to IS ....180mm adaptor that I can't use.

pembo6's picture

Think I found what I need. ???

http://www.chainreactioncycles.com/Models.aspx?M...

The 20mm PM - 180 PM Front .......

Looks like it converts a front post moint from 160 to 180 rotor. But the description is not very good.

DigDig's picture

Yep the one with 20mm post written on it looks like it.

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