for (int i=0; i < mRecyclerView.getChildCount(); i++) {

    ViewGroup itemView = ((ViewGroup) mRecyclerView.getChildAt(i));

    itemView.getChildAt(3).getLayoutParams().width = newWidth;
    itemView.getChildAt(3).requestLayout();
}

for (int i=0; i < mRecyclerView.getChildCount(); i++) {

    ViewGroup itemView = ((ViewGroup) mRecyclerView.getChildAt(i));

    itemView.getChildAt(3).getLayoutParams().width = newWidth;
    itemView.getChildAt(3).requestLayout();
}

@Override
public void onViewAttachedToWindow(ViewHolder holder) {
    super.onViewAttachedToWindow(holder);

    ((ViewGroup) holder.itemView).getChildAt(3).getLayoutParams().width = newWidth;
}

mRecyclerView.setItemViewCacheSize(0)