---
title: "ZX81 2K Upgrade Kit"
id: 14785
type: "product"
slug: "zx81-2k-upgrade-kit"
url: "http://localhost/product/zx81-2k-upgrade-kit/"
markdown_url: "http://localhost/product/zx81-2k-upgrade-kit.md"
published_at: "2019-11-30T01:20:18+00:00"
modified_at: "2026-03-22T13:20:27+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Double on-board memory to 2K."
category:
  - name: "RAM"
    slug: "ram"
    taxonomy: "category"
    url: "http://localhost/category/hardware/ram/"
post_tag:
  - name: "J. Balogh"
    slug: "j-balogh"
    taxonomy: "post_tag"
    url: "http://localhost/tag/j-balogh/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
genre:
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "RAM"
    slug: "ram"
    taxonomy: "genre"
    url: "http://localhost/type/ram/"
company:
  id: 10964
  title: "J. Balogh"
  type: "company"
  url: "http://localhost/company/j-balogh/"
price: 15
date: 1982
rarity: "Uncommon"
adverts:
  - publication:
      - id: 26645
        title: "SYNC v2 n5"
        type: "issue"
        url: "http://localhost/issue/sync-v2-n5/"
    advert_page: "91"
companies_products:
  - id: 10964
    title: "J. Balogh"
    type: "company"
    url: "http://localhost/company/j-balogh/"
---

# ZX81 2K Upgrade Kit

Double on-board memory to 2K.