Are there pipework kits available for the basement sump pump systems?

Yes, there are pipework kits available that are ordered upon request. For example, there is a pipework kit for the Sentry Twin sump and pump system which channels the two pump outlets into one discharge point. These must be ordered, where required, at the time that the order is placed for the pump system itself (http://www.cellars.co.uk/products/aquadrain-drainage-channel-and-sump-systems).