Originally Posted by kn7671

No, the TC5 kit only comes with #3 pistons... I bought two TC5 kits, one for spare parts, and both came only with #3 pistons. This kinda irritated me, but I can see that Associated is trying to maximize their profit by making more and more parts optional.

Here's another shocker, the pistions for the TC3/TC4 shocks are smaller in diameter by .006", and the new TC5 pistons are also thinner by .004". I elected not to use them since I could not get an e-clip on the shock shaft with taking a file to the pistions to make them slightly thinner, and with the #2 pistions being .006 smaller, they will allow shock fluid to bypass around the piston instead of completely through the holes in the piston.

Yes, you can drop the fluid weight by 5 to 10. I think I read somewhere that the #2 pistions are close to making a 5wt change in fluid, and the #1 piston would be close to 10wt change. Of course, they won't be the same, but will have similar effects.