Magura thor forks uses a Postmount 7" disc mount. Could anyone point me in the direction of the correct adaptor? for using a 203mm Rotor:)

Thanks

Hope IS caliper to PM mount +20mm worked for my XTR front brake – 203mm.

Magura's are postmount. So the IMS20H won't work for this application.
The fact they come with a specific 183mm (7") mount suggests Magura didn't design for, and won't warranty the fork when used with a bigger rotor.
You might be able to use a regular post to post adaptor upside down with some spacing washers to get it to work, but I'd advise against it.

Magura sell a specific adaptor to move from 183 to 203, or you can just use a Hope +20mm. The Thors are warrentied to 203mm, I've a pair.

What are your calipers, IS or Post?

I like how they run 183mm without an adaptor, saves on bits/weight etc.

Thanks for the replys guys.

I've actually found the anserw on the Magura forum – perhaps the obvious starting place…. doh.

Skyline while im not 100% sure but i believe you dont void your warranty by using a larger rotor. Magura make an adaptor to do exacly what i need its 'QM26' for anyone else looking for the answer.

Just need to source it – anyone got any ideas?

None of my lbs stock Magura that i know of.