100% sure - in fact I Know that Samco kits don’t fit the MC18 despite what they claim
Only three of the hoses are compatible with the MC18 MK1 so I ended up selling it on as you need 5 hoses on the MC18 and the kit contains just 4 and one of those is a skinny straight pipe that’s useless

Discussed here
http://www.nsr250.net/forums/viewtopic.php?t=15251&start=60&postdays=&postorder=&highlight=

I’m assuming they fit the MC16 so you should be okay, would be interested to know how you get on