I have a few of the Triumph clutches on my bikes and they don't have a ball bearing in the pressure plate, as Ron states.

I did knock up my own version of the SRM "pusher / bearing" to fit the 4 spring Triumph plate and it worked OK. It is supposed to give a more even lift but I can't say I really noticed any difference to the standard setup though.

here's the SRM one with a "pusher" and a needle roller thrust bearing.

https://www.shop.srmclassicbikes.com/product/bsa-a7-a10-b31-b33-goldstar-clutch-pressure-plate-kit

Extraordinary bike Ron.
Hopefully you dont live in a neighbourhood full of rivet counters....:scream:

Hi Michel. The nice thing about building a special is, there are no guide lines to follow!:relaxed: Ron

email (option): ronpier@talk21.com