Hi Thamer. Don't know if I am teaching you to suck eggs but just in case....CNC Racing should have supplied you with a shorter link rod as part of the kit (if these are the RPS400 rearsets). Note that to undo the OEM one, you should remove the black electrical connection (two allen screws on the QS body). The rod is a left hand thread. I would suggest you try and place the body section of the QS in the soft jaws of a vice with some protective cloth or soft wood, so as not to damage it. Next before you attempt to loosen it you are going to need to apply some heat. A decent hairdryer will be sufficient. Aim the heat at the threaded section coming out of the QS body as this will help soften the copious amount of threadlock Ducati needlessly apply when it's assembled. Remembering it's LH thread, you should be able to turn the rod with a decent well fitting spanner (I would use some masking tape over the rod flats to prevent marring the metal) and gradually loosen it until the threadlock breaks its hold. When you fit the new CNC rod, apply a little dab of Loctite 243 to the thread (having cleaned off all the old gunge) and fit the OEM spherical ball joint to the other end of the new rod. Tighten locknut and you should be good to go.