speedxl- I would not run them in mod, since they do twist and thus create an odd handling condition (as well as breaking), however in stock they should be fine. I run IRS big dawg bones (they also have four holes drilled out for the pin that connects the axle to the bone instead of two like the AE ones, so you dont have to replace them as often when you wear the holes, which in stock isnt bad, but in mod you have to replace them every month or two, espically with the insane motors everyone runs today, lol).