I read about this on Rennlist
https://rennlist.com/forums/997-gt2-gt3-forum/1249576-new-vendor-intro-heavy-knobs.html
It's a set of weights designed to fit into your OEM shifter and improve the experience. My set arrived today and installed within 15 mins. I have an SSK and on my test run it was a better throw and more positive gear change.
I don't know if others have tried them but thought it would be of interest - I recommend reading the Rennlist thread to get more information and feedback from users.
https://rennlist.com/forums/997-gt2-gt3-forum/1249576-new-vendor-intro-heavy-knobs.html
It's a set of weights designed to fit into your OEM shifter and improve the experience. My set arrived today and installed within 15 mins. I have an SSK and on my test run it was a better throw and more positive gear change.
I don't know if others have tried them but thought it would be of interest - I recommend reading the Rennlist thread to get more information and feedback from users.