The exhaust valve on this model zx10 is built into the stock end can.. So unless the werkes slip on has a built in exhuast valve aswell you'll have to disconnect your cables from the stock end can and tuck them up somewhere or remove them from the servo under the seat and bike like i did with mine and leave them connected to the exhaust itself
If removing from the bike measure all your adjuster settings at the servo for the cables in case you have to throw it all back on due to any defects etc,
Just make sure you dont disconnect the wiring harness from the servo motor itself or it will throw a FI code and run the bike in safe mode aparently
