Downstems

A quality downstem is the heart of any great bong session. Whether you're replacing a broken piece or upgrading for better performance, Bong Empire has Australia’s best range of glass downstems, metal downstems, diffuser downstems, and bonza stems — all designed to improve airflow, filter your smoke, and deliver smoother, cooler hits.

Shop Downstems Online at Bong Empire

We make it easy to find the perfect replacement downstem or upgrade your setup with premium-quality materials, precision sizing, and same-day shipping across Australia.

Our Range Includes:

  • Glass Downstems – Made from durable borosilicate glass for clean, flavourful filtration. Available in standard 14mm and 18mm joint sizes.
  • Metal Downstems – Built from anodised aluminium or stainless steel for extreme durability. Great for travel or daily use.
  • Diffuser Downstems – Featuring slits or holes at the base to break smoke into finer bubbles, giving you a cooler, smoother hit.
  • Bonza Stems – Classic Aussie-style metal stems designed for rubber grommet bongs. Perfect fit with brass cone pieces.

Why Your Bong Needs a Quality Downstem

  • Better Filtration – The downstem filters smoke through water, reducing harshness and cooling the hit.
  • Improved Airflow – A properly sized and clean downstem allows for easier pulls with minimal resistance.
  • Customisation – Swap in different styles, colours, or lengths to match your bong and your smoking preferences.
  • Replace Broken Parts – Keep your bong performing like new by replacing cracked or clogged stems with high-quality replacements.

How to Choose the Right Downstem

To get the best fit:

  • Joint Size: Most bongs use either 14mm or 18mm joints. Match the size of your stem to your bong’s joint.
  • Length: Measure from the bottom of your joint to just above the base of your bong’s water chamber. Too short = poor diffusion. Too long = won’t fit.
  • Material: Choose glass for flavour and metal for durability.
  • Type: Upgrade to a diffuser stem if you want better smoke filtration and smoother rips.

Need help? Our team is happy to guide you through selecting the right size and style.

Why Shop Downstems at Bong Empire?

  • Australia’s Best Range – Glass, metal, diffused and bonza downstems for every bong setup.
  • Same-Day Dispatch – Fast shipping when you order before 12PM AEST.
  • Discreet Delivery – Plain packaging for privacy.
  • Free Shipping – On all orders over $100.
  • Trusted Aussie Brands – Including MWP and Agung.

Buy Downstems Online – Australia’s Favourite Bong Accessories Store

From classic bonza stems to diffuser upgrades, Bong Empire has the best downstems in Australia to keep your setup performing at its peak. Whether you’re using a beaker bong, straight tube, rubber-based bong, or dab rig, we’ve got a downstem that fits your style.

Upgrade your session with a premium downstem from Bong Empire – where Aussie smokers shop for quality, compatibility, and performance.

Downstems FAQ

What is a downstem and why is it important?

A downstem connects your bowl to the bong’s water chamber. It allows smoke to travel through water, filtering and cooling it for a smoother, cleaner hit.

What’s the difference between a regular downstem and a diffuser downstem?

Diffuser downstems have slits or holes at the bottom to break smoke into smaller bubbles, increasing water contact and improving filtration.

How do I measure my downstem size?

Measure the joint size (usually 14mm or 18mm), and then measure the length from the bottom of the joint to where the stem should sit just above the base of the bong’s water chamber.

Are glass or metal downstems better?

Glass offers better flavour and smoothness, while metal is more durable and less likely to break. Choose based on your preferences for taste vs. toughness.

Can I use a bonza stem with any bong?

Bonza stems are designed for rubber grommet bongs and may not fit glass-on-glass setups. Always check compatibility before purchasing.

How do I clean a downstem?

Soak in isopropyl alcohol and salt, rinse thoroughly, and use pipe cleaners or brushes for stubborn spots. Cleaning regularly maintains optimal performance.