I had Racing 5 fitted OEM to my Focus Izalco, and my wife had Racing. 5.5 fitted OEM to her Specialized Ruby. I weighed both wheels together, sans cassette, and her 5.5 were almost 500g heavier. So seems to fit what is posted above.
Both wheelsets gave excellent service.
Last edited by redcon1; 07-23-21 at 06:29 AM.
Reason: Added info