Indeed the parts quality is different (lower) on the RC18.
I'm guessing the B4 is the last "real" Associated kit, that is : manufactured in Ca. , USA before the TTR takeover.
The RC18 and the new TC5 use different materials compared to previous AE kits and the biggest tell-tale of all : they're metric !
BTW, there's nothing wrong with parts quality of the TC5 kit : it's suberb ! And it's metric !!!
I was affraid for us racers when TTR took over AE, but as it is now : AE seems to be doing just fine. It's Losi that is going to sh*t since the Horizon takeover. Losi kits used to be excellent quality, but ask anyone who has an LST how parts quality is now.
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