Thanks for the reply, yeah, I did think caliper swap might be a bit tricky!

What size did you go for on your setup? I know the X has a different size front disc, but I assume the R will have similar requirements?

http://www.demon-tweeks.co.uk/motorc...aster-cylinder

The above site suggest the "16mm Diam Bore with 18 Ratio Lever".

The radial master cylinder looks like it'll be a similar cost to the larger front disc, I wonder which would give me more power?

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