Are there any high quality/strong pipes that work well in 10th scale onroad? I have the sirio and skyline pipes but they dent easily.

In 8th scale offroad we have some great pipes that work on a wide range of motors, check this one out. The stinger is reinforced and the pipe is hard coated, these things last forever, cost $65 for the pipe/header and they're the perfect pipe for 3-4 engines.