I own a 2018 zforce trail and I want to go wider suspension so I'm wonder if the ex or the 1000 suspension and everything will fit on the trail.

[2015 Z Force 800 53/Trail EPS]

The 800EX will but the 1000's probably won't because of different diffs, axles, brakes and such. It will cost a small fortune as you will need all the a-arms with all bushing and sleeves, axles, all shocks, brake lines, tie rods and fender flairs if necessary. It would have been cheaper to have bought an EX in the first place.