**Partial code** Adds pre-order tag in Pipeline. Replace first 49 lines of code with this.

product-grid-item.liquid

{%- assign pre_order = false -%}
{%- assign pre_order_tag = false -%}
{% if product.tags contains 'pre-order' %}
  {%- assign pre_order = true -%}
  {%- assign pre_order_tag = true -%}
{% endif %}

{%- assign on_sale = false -%}
{%- if product.compare_at_price > product.price -%}
  {%- assign on_sale = true -%}
{%- endif -%}

{%- assign sold_out = true -%}
{%- if product.available -%}
  {%- assign sold_out = false -%}
{%- endif -%}

{%- assign new_product = false -%}
{%- assign published_date = product.published_at | date: "%s"  -%}
{%- assign now_date = 'now' | date: "%s" -%}
{%- assign age_in_days = now_date | minus: published_date | divided_by: 60 | divided_by: 60 | divided_by: 12 -%}
{%- if age_in_days < settings.tag_new_limit -%}
  {%- assign new_product = true -%}
{%- endif -%}

{%- assign sellout_tag = false -%}
{%- if sold_out and settings.tag_sellout -%}
  {%- assign sellout_tag = true -%}
{%- endif -%}

{%- assign new_tag = false -%}
{%- if new_product and settings.tag_new -%}
  {%- assign new_tag = true -%}
{%- endif -%}

{%- assign sale_tag = false -%}
{%- if on_sale and settings.tag_sale -%}
  {%- assign sale_tag = true -%}
{%- endif -%}

{%- assign tagged = false -%}
{%- if sellout_tag or new_tag or sale_tag or pre_order_tag -%}
  {%- assign tagged = true -%}
{%- endif -%}

{%- capture sticker -%}
  {%- if tagged %}
    {%- if pre_order_tag -%}
      <div class="sticker sticker--pre_order">{{ 'Pre-Order' }}</div>
    {%- elsif sellout_tag -%}
      <div class="sticker sticker--sold">{{ 'products.product.sold_out' | t }}</div>
    {%- elsif sale_tag -%}
      <div class="sticker sticker--sale">{{ 'products.product.sale' | t }}</div>
    {%- elsif new_tag -%}
      <div class="sticker sticker--new">{{ 'products.product.new' | t }}</div>
    {%- endif -%}
  {%- endif -%}
{%- endcapture -%}

Replace first 49 lines of code.