

CO2 | Nitrogen Spear Upgrade kit
Already own a Keg Smiths Nitro mini keg setup and want to add CO2 service for beer or carbonated drinks? This is the conversion kit. Spear, tap, regulator, and hose — everything you need to switch your existing nitrogen keg to a fully-functional CO2 draft system. Compatible with both our threaded CO2 and threaded nitrogen cartridges.
Why upgrade vs buying a second system
- Reuse your keg: Same keg body, same cap — just swap the dispensing hardware.
- Run both gases: The included regulator works with our threaded CO2 and threaded nitrogen cartridges, so you can switch between carbonated and nitro service.
- Complete kit: No piecing parts together — spear, tap, regulator, and spare hose all in one box.
What's in the Box
- Stainless Steel Spear
- Tap and Handle
- CO2 Regulator (compatible with threaded CO2 and threaded nitrogen cartridges)
- Spare Hose
Specifications
| Compatibility | Existing Keg Smiths Nitro mini kegs (128 oz / 64 oz) |
|---|---|
| Cartridges | Threaded CO2 (3/8"-24) or threaded Nitrogen (3/8") |
| Working pressure | 5–9 PSI typical (adjustable) |
How to Install
- Remove the existing Nitro spear and stout faucet from your keg.
- Drop in the included S/S spear and seat the new tap.
- Mount the CO2 regulator and connect with the included hose.
- Thread in a CO2 (or threaded N2) cartridge and dial in your serving pressure.
Frequently Asked Questions
Can I keep my Nitro hardware?
Yes — store the original Nitro spear and stout faucet, and swap them back in when you want nitro service.
Will the included regulator handle nitrogen too?
Yes — it accepts both threaded CO2 and our threaded N2 cartridges, so you can switch gas types without changing hardware.
Pairs Well With
Stock up on 16g CO2 cartridges. Want to go the other direction (CO2 to Nitro)? See the Nitrogen Spear Upgrade Kit.

CO2 | Nitrogen Spear Upgrade kit
Sale price$85.00
