Downpipes & Diffusers

A selection of replacement and upgraded downpipes, downstems and glass diffusers to fit all standard sized bongs and waterpipes.

A diffused downpipe or diffuser can completely transform the performance of your bong by helping to break up the smoke into finer particles for a smoother, cleaner hit. This makes the whole process easier on the lungs and is ideal for medical users as a smoother hit means less coughing and the cooler smoke alleviates nasty burning sensations in the throat.
Different downtubes fit different bong joints, so be sure to check whether your piece has a 14.5mm or 18.8mm joint and whether you’ll need an adapter to fit your new diffuser.
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  1. Roor Bongs Diffusers ROOR
    As low as £32.00
  2. Roor 3 Part Down Tube ROOR
    As low as £18.00
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