Sinz BMX race bars for trick riding?

Question: What do you think puts more strain on a bike, a fixed gear freestyle rider jumping down a 6/7/8 set of stairs, or a bmx racer landing smoothly into the downslope of a 20ft double, there are many fixed freestyle riders doing a lot more than doing a barspin off a curb you numpty, ever heard of SuperTed, Odge, Oscar etc etc etc?

I didn't say landing smoothly though did I? And why can't the fixed rider land smoothly off of the set of stairs (rear wheel first etc,.)
And I stand by my comment that most fixed freestyle riders are doing no more than barspinning off a curb and the names you mention are in the minority. Clearly if you are breaking parts then you need something stronger than MTB parts.
Only pissed_up_pista can say which category he falls into and therefore which parts he needs.