I want to ask about variator mod

[darius823]

I want to change my old variator with lighter one.
Is this worht it ?

[GrumpyUnk]

That is towards the low end of variator prices for non-branded equipment. If you went with brands, such as Naraku, the price would be higher. I'd say that is about what a generic China made variator would cost.
Given that the posted words are in an image, they cannot be plopped into a translate function, so I don't know what the vendor is promising.
I don't see a lot of advantage to a lighter weight variator as the rotating assembly is fastened to the crankshaft, and it really needs a bit more mass to have a smoother idle. You might find you have to increase the idle speed if you reduce the mass too much. You might get a slightly increased bit of acceleration due to reduced mass, but I doubt it would be measurable or felt 'by the seat of the pants'. F=MA, Force equals mass times acceleration. The only thing you are changing is the M or mass, reducing slightly in comparison to the rotating mass of the crankshaft. The piston and rod will have mass, but it will 'turn on and off' as they must come to a complete stop at either end of the stroke, so does not really help with smooth idle.
tom

[90GTVert]

Some of the cheap variators can perform better than stock, but often times they don't do it for long before they fail. If you search here, you can find some talk about DLH variators. They are or were quite common cheap variators and look an awful lot like what you showed us. The knockoff (not genuine) Koso is another one. People keep having failures related to the drive boss. AA little more money into at least a Taiwan brand may be a good idea. Naraku, SSP-G, NCY, etc... or even moving into the big brands like Malossi or Polini.