You likely have a 22mm disc mount in the rear. Get an A2Z 22-51mm adapter. You're restricted to about 160mm, not that you'd need more on a bike like that.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Mountain Bike Reviews Forum
A forum community dedicated to Mountain Bike owners and enthusiasts. Come join the discussion about bike parts, components, deals, performance, modifications, classifieds, trails, troubleshooting, maintenance, and more!