The only part HRC list as far as I know is the rectifier as available from the market place. There is no HRC reed according to Matt at Tyga, Paul apparently has RS125 reeds in his '28.
The Tyga kit includes a high flow valve, HRC style rectifier and a std Honda reed. The carbon reed is seperate.
Add into the mix some other quality reeds like Boyesen and you've got about a dozen combinations to play with and that's without trying them 50/50.
If you don't want the reeds I'm up for some real world testing, pm me with a price for them
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