Still sorting everything out in preparation for switching the MX comps on my Love/Hate for RC31s. I reaslised that the forks and brakes are post mount at the moment. My RC31s are I.S.mount.

I know you can get adaptors that will convert an I.S. mount on the fork to fit a post mount brake. Do they all require you to increase the rotor diameter by 20mm? Ideally I’d like to avoid running a disk larger than the current 160mm on the carbon fork (and it’d be cheaper not to have to change the rotor.

Is there anything available and if so, do they all perform well or are there some to avoid or recommendation?

http://cgi.ebay.co.uk/Front-Post-to-IS-160mm-6Inch-Disc-Adaptor-Hayes-Shimano_W0QQitemZ200306164607QQcmdZViewItemQQptZUK_sportsleisure_cycling_bikeparts_SR?hash=item200306164607&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318

This may work, but then Im only a woman

Tracey

Looks promising Tracey…

I had been mooching on ebay and on the on-line shops. Missed that though. I am always getting told that not looking for things properly is a male thing!

Had a couple of these in 180 from them and they work OK

Tracey

Hope adaptor

This one has been fine. It’s the other way – IS caliper to PM fork – that you need to up the rotor size by 20mm