Or is there an aluminum kit you can buy from tower hobbies that any knows is good?
“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens
I know there is an alu set that many of the racers on the TRX forum use. RD Logics? tho i think its some other "R" name. Search it there maybe.
The only complaint I remem about the RPM ones it the tendency of the pillow balls to rip out of the plastic, thus many racers use alu in the fronts. I having had any probs w/ the stock size bearings in mine, my Emaxx ones used to grenade fairly quickly tho.