Hi, 've got a NC30 but am going to fit RVF 400 wheels so I have a 17'' rear i'm going to convert to Renthal 520 15t front and 38t rear what number link 520 chain should I get?

Kennon

I'd not get a 38 on an NC30 - regardless of the RVF wheel. The tall first gear would be murder...

and 104 links..

so stick to a standard 40 rear?

I would. It depends on your riding but if you don't go on the motorway so much and you like to get some acceleration, then going 14t 41 is a good one..

You only get 115mph out of it, but it is miles faster getting there

hmm, I'll see how she is once the wheels are changed over this summer some days I only do 14 miles some I do over 100 think I'll have to find a compromise of both.

Kennon