[chillindrdude]

stupid question time guys...my apologies...

the mounts on my 2010 boxxer wc appear to be 74mm post.

i have a 74mm post formula K24 oro caliper.

in order to fit a 203mm front disc rotor, i need a front post to post 203mm adapter right?

 

[davep]

The newest boxxer is the first boxxer to use a true standard PM mount. That means that a 6" rotor mounts with no adaper and any thing larger requires the appropriate "PM to XXX" adaoter.

It looks like FD40111-10 is the part # for your 203mm adapter, and they are reasonably priced compared to their brake systems/rotors. You could also use a Hayes, Avid, or Hope, etc for similar $$ (the shimano part is 2X the price).