Guess I have just been lucky with my front end on the bike over to the left there. <-- I t was built back in 1992 using 1.50 DOM 0.120 wall tubing for the down pipes and the swing arm is 1.50 DOM 0.093 wall. Then again I don't do any real off-road riding and not jumping moguls on a dirt bike track! It does have a bit over 100,000 miles of road miles on it. Now if i was building one for a bigger bike or one that would see rough road conditions on a steady basis I would be looking for something stronger like the tube-in-tube design.