Servicing the clutch slave cylinder

Hi Guys, has anybody done a plain clutch slave cylinder service? I did the clutch fluid today and it was muddy. According to advrider the slave cylinder needs some work then. The available guides are a bit vague about the parts needed. Would this suffice?

https://boxer-upgrades.webs.com/apps/webstore/products/show/3818419

Cheers
Christo