I cannot say the Titanium pivot balls for R40 cause I never got one....but I can tell alot about the GPM TITANIUM in general...
One word.....made in china and their definitely of TITANIUM is equal to the USA called "WATER mixed with plastic plus 1% Titanium".....
I still remember the NTC3 Titanium Universal...."3 times stronger..."........RIGHT....those titanium garbage can't even last more then 5 minutes in qualifier...
GPM sucks even though I am born in HK...GPM are pretty much the worst RC products in history....but of course, they have the best advertizing and best packaging.
But again, their pivot ball might be better, but on NTC3, they changed the thread from standard to metric and ppl in state brought those pivot later realzied that it cannot be thread into the NTC cause they are metric....