HRC Kit Clutch or Sigma . which one to use?

I have both for the bike but which is considered the best?

Honda have used Sigma in BSB and used the STM in the TT. Does this mean they are better than the HRC or does it come down to cost or choice?

 

Both great bits of kit si. I have ran both with no issues . More than likely it will come Down to endorsements and sponsorship i bet


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I reckon you are right. Thought I would ask just in case there was something more to it.