Although I managed to break a 7° caster hub carrier and a hub, I am pretty sure that it is NOT the fault of the part. The car had a very tough impact and the steering was under tension - something had to give way - definately not my super rugged Futaba BLS 451 Servo. I wonder if I will ever break these parts again. If so, I hope it will be the LEFT side next time...
To confirm another thing I once asked in the forum: The Cyclone D4 wheels are a perfect fit. With the yellow wheels mounted, the car looks at least 20 kph faster ;-)
One definite advantage seems to be the absence of the groove on the rear wheel, no place left to catch dirt...