Looking at early posts on the B7 group, the extra friction based on the kit gears it seemed like there were reports at the time of heat issues. I dont know if this is still the case, but I do see a variety of aftermarket stuff getting made relative to lower friction gears. In real-world from what I can see at our turf track they seem to have similar top end like everyone else. I don't see anything odd, so maybe its more so what heat they see if I was going to confirm anything relative to that.

In general me personally I went with Yokomo years ago after people recommended the turf springs at the time for carpet. I figured if the springs were good, maybe try the car. I have been running those ever since which is funny now we go with other brand springs lol . I like the combination of what i feel is quality of parts relative to price and performance. The one Xray I had here for sure was top notch in parts quality, but at points I would cringe when I would here it hit something knowing the cost of that 1 a-arm in the pack, packaged beautifully for sure, but just wow on the price lol.

Main thing though for sure, gotta find what works for you. Big thing to me, if it keeps you in RC, then its the right car for you!