

Hello all,
I'm attempting to build a Frankenstein.
Do I have any chance of finding a suitable mount post for this conversion or should I go for a 160 disc instead of 180?
I did a terrible job with the measurement but seems to be 25-30 mm from the center of the holes on the frame to the flat mounting face of the caliper.
Many thanks.
by ovidiusilviu
3 Comments
This is an IS mount
You need and IS mount Rear 180mm adaptor.
Google it. Very standard thing.
Even if you want to use 160 rotor. You will need IS mount Rear 160mm adaptor.
I’ve stacked random adapters before to find a set up that gets the caliper onto the disc.
It looks rough but once everything torqued down hard I never had an issue.
I don’t think it’s the safest way of doing things though because it adds failure points.
You need IS+40. Something like this [https://r2-bike.com/SHIMANO-adapter-IS-to-PM-40-rear-black](https://r2-bike.com/SHIMANO-adapter-IS-to-PM-40-rear-black)