The biggest difference between the TYGA Hi-Flow Reed Valves and the HRC rectifiers is the number of parts you get!

The TYGA rectifier design is basically the same as HRC, but by just replacing the rectifier you are only improving the mixture flow. which is of course, not a bad thing.

With the TYGA parts you get new valves complete, so you can be sure that the reed petals (OEM Honda) are fresh, and the sealing face of the valve body is tip top.

We then add the stopper lifter plates to increase intake area, which comes helps over rev.

Not trying to make a sales pitch here, just explaining the difference.