Help, my car bounces when i brake slowly

I just replaced the two front arms in both sides and the two front drive axels but my x3 2004 still bounces when i brake in low speed. does any know what's wrong with my car. i don't know what else needs to be replaced. basically, when i go from 15 miles and i brake slowly, it bounces right before the car stops. it seems that the passenger side is the one that bounces. I also replaced all pads and rotors four months ago.

There are a total of four arms up front. The thrust arms are the more likely to cause the "bounce" under braking. I would change those along with their ball joints if that hasn't been done yet.
No alignment is needed after changing the thrust arms.

Yes I replaced The thrust arms and lower control arms plus the drive axels in both sides but still is I can feel the kick.

Could it be related to the transmission downshifting?
What about tire pressure? Have you checked those.

thanks, I'll check the tires and transmission. I've been reading some bimmer forums and i haven't seen any similar situation. Its very weird. I hope its not the transmission.

I had a similar problem but it got fixed once the front control arm bushings got replaced

Was the suspension preloaded when you final torqued the thrust ARM bushings?

Worn out struts?

Not sure but I don't think was preloaded. I took my bimmer to the mechanic and he said that may be the driveline axel. He will inspect it this week to make sure what the problem is. I'll keep you posted!!

If the suspension wasn't preloaded the new bushing may have failed already depending on how many miles you've driven.

The correct way to change the thrust arms is to leave them loose, lower the X3 onto the ground or ramps, add approx 200 pounds to the front seats, then final torque the thrust arms.

That's very interesting!!! I did not know anything about preloading and then torque. I'll check the trust arm and the bushing again. Thanks!!