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  • Shimano Mount Adaptor Rear Post to IS
  • Shimano Mount Adaptor Rear Post to IS
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160mm
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203mm
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Hope Rear Post to IS Mount Adaptor

  • Shimano adaptor to mount a 74mm post mount caliper to a 51mm international standard frame mount to accomodate a 160mm disc.

Buy Hope Rear Post to IS Mount Adaptor from Chain Reaction Cycles, the world's largest online bicycle store.

  • Colour: Black
  • Size: 160mm, 180mm, 203mm
Rated 4.7 out of 5 by 12 reviewers.
Rated 5 out of 5 by Disc Brake Adaptor If you need an adaptor then get these. They are shimano quality and CRC are doing them for a good price. 22 July 2014
Rated 5 out of 5 by Awesome quality part Does what it's supposed to do, mega ! Only part I needed to convert to 180mm rear (obviously a rotor also) available on here Xt/saint :-) 09 July 2014
Rated 5 out of 5 by Отлично Как уже писал: хорошая запчасть. Использую не сурово. Стопоры на болтах мне не совсем понятны. 09 May 2014
Rated 4 out of 5 by シマノ このシマノのインターナショナルスタンドは 適性トルク値もちゃんと記載されてるし 緩み防止パーツも簡単に付けられて良いと思います 16 October 2013
Rated 5 out of 5 by Nice Отличный адаптер по приемлемой цене. Заменил на своём дисковом Gusset (а то резьбу сорвал из-за того, что под один болт не положил шайбу, когда устанавливал тормоз :( ). 27 October 2012
Rated 5 out of 5 by perfect Does the job perfect, a good replacement for the poor quality adapter i got with my clark brakes. Includes 2x6mm allen key bolts over the 4mm i was using previously, no problem with rounding these ones out :) 06 October 2011
Rated 5 out of 5 by Very good. Usual high quality from Shimano, I'm an SRAM man myself but the Avid adaptor was 11 quid so the Shimano job was far better value at less than half the price. The packaging and instructions are a bit OTT for a simple adaptor but you can't argue with the quality. 30 November 2010
Rated 5 out of 5 by object discription the reason why i purchased the item from you was that it was well desribed so i knew what i was purchasing well done carry on the good work 18 April 2010
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1 Question : 1 Answer

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Post mount frame to IS caliper.

Hi I have a frame with post mount 74 mm frame mounts , on the chainstay, for the rear brake, I want to attach a standard 51mm IS disc brake (160 mm rotor will be used). This is the opposite of how this adapter is described, but it looks like it might work by the picture. Will it work, if not have you got an adapter that will ?

Many thanks.
1 month ago
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Answers

Answer: 
Likely your frames Post Mounts are designed for use with a 160mm Rotor; however to make the adaption between IS and Post mount, the only option is a IS to POST +20 adaptor which would require using a 180mm rotor.
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