The diff cups on the one-way have round shafts as opose to the stock ones that have the flat spot. I have checked to see if they fit and there is a chance the Dreamel could sort them but I would prefer the proper thing. I am still running the NT16 on the CEN at the mo', I have two engines and a few new piston and liners aswell as con rods so I can keep running these for ages. A nice new OS.18 is always tempting though, especially when they are so cheap. The one-way is a bit of an experiment but I think it will work out pretty well on the track. I know they have a reputation for being a bit flimsy but I will give it a chance and see what happens. It was only sitting in my spares box anyway!
The titanium pivot balls are for strength, lightness and anti-corrosion properties! (and bling). All the ones I have are getting a bit tatty and I meant to pick up the CEN ti ones ages ago. Now they have stopped doing them I have to look for alternatives. I always like a challenge though! Might get a set of these Fmax ones and sell 'em on ebay if they don't fit.