I have a KMC DX10sc chain that I need to shorten by several links. It's on a bike now fully assembled.

Question:

Can I use a chain tool to "break" the chain and reassemble, or do I need to use a masterclip or special replacement pin?

I've used chain tools in the past on other bikes and have a Park CT5 tool that I'd like to use for the job.

Any advice before I just go for it?

Thanks in advance.