I'm pretty certain I've read the answer already but want to double check. Sorry if
I've just bought some Deore XT's to replace Elixr's.
I was running 185mm front with 160mm rear and have bought a new 203mm front and want to run the original 185mm disc on the rear.
My bike has post mount rear rather than IS so i was going to switch the disc and adapter over straight over (after a good clean).
Do i need washers to space out the new caliper to the correct position or will it just drop straight on?