I have them on my ARRMA Fury and they are really good. Less slop and a lot stronger than the stock arms. The only thing is that I couldn't use is the RPM front upper arms. I am using aftermarket shocks on my Fury and the spring diameter on the aftermarket shocks is too big in diameter for the opening of the RPM upper arms. You could always trim the opening to fit the larger springs but the stock ARRMA front upper arms have held up well for me so really no need to use the RPM ones.