Diffusers

At Grasscity.com we offer a wide range of diffusers. We have diffusers that serve as a connector for your bong and complete downpipes (stem with bowl). Diffusers cause an air whirl and produce little bubbles that cool the smoke. A downright innovation for a smooth smokin' experience.
 

25 Item(s)

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  1. Pulse Glass - Barrel Diffuser Downstem - 18.8mm - 4.5 inch

    Pulse Glass - Barrel Diffuser Downstem - 18.8mm - 4.5 inch

    Price: $40.00 40.00 USD

    Downstem with barrel diffuser tip, from Pulse Glass!

    • Made in the USA, ships from the USA

    • High quality German Schott glass

    • Real platinum Pulse Glass logo


    Learn More
  2. Pulse Glass - Barrel Diffuser Downstem - 18.8mm - 5 inch

    Pulse Glass - Barrel Diffuser Downstem - 18.8mm - 5 inch

    Price: $40.00 40.00 USD

    Downstem with barrel diffuser tip, from Pulse Glass!

    • Made in the USA, ships from the USA

    • High quality German Schott glass

    • Real platinum Pulse Glass logo


    Learn More
  3. Weed Star - 4-arm Perc Downstem Bong Adapter - 29.2 mm > 18.8 mm

    Weed Star - 4-arm Perc Downstem Bong Adapter - 29.2 mm > 18.8 mm

    Price: $25.00 25.00 USD

    A spare or replacement diffuser downstem and adapter from Weed Star!
    • Inside-cut 29.2mm > 18.8mm joint

    • Weed Star logo in blue

    • 4-arm slitted tree perc diffusion for extra bubbling

    • Various lengths available

    Learn More
  4. Blaze Glass - Removable 5-Arm Tree Percolator 18.8mm

    Blaze Glass - Removable 5-Arm Tree Percolator 18.8mm

    Price: $25.00 25.00 USD

    A removable 5-arm perc that changes color as you use it!
    • Reinforced

    • Color-changing silver fumed glass

    • Can be interchanged with any other 18.8mm removable perc
    Learn More
  5. Removable "Honey Comb" 7-arm Tree Percolator - End of line discount pricing

    Removable "Honey Comb" 7-arm Tree Percolator - End of line discount pricing

    Price: $7.50 7.50 USD

    Removable 7-arm Tree Percolator

    • Spare part for the Mad Scientist V3

    • Reinforced with glass between each arm


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  6. EHLE. Glass - Diffuser Downstem

    EHLE. Glass - Diffuser Downstem

    Price: $27.50 27.50 USD

    Handmade glass diffuser downstem from EHLE!
    • Made in Germany

    • High grade Schott Duran borosilicate glass

    • Pinpoint precision fit

    • Choose joint size and length
    Learn More
  7. Weed Star - 4-arm Diffuser Downstem

    Weed Star - 4-arm Diffuser Downstem

    Price: $27.00 27.00 USD

    A spare or replacement diffuser downstem and adapter from Weed Star!
    • Quality borosilicate glass

    • Inside-cut 29.2mm > 18.8mm joint

    • Weed Star logo in blue

    • 4-arm slitted tree perc diffusion for extra bubbling



    This tree-perc downstem is extra long, so remember to check if it will fit your pipe! Learn More
  8. Weed Star - Circ Perc Downstem Bong Adapter - 29.2 mm > 18.8 mm

    Weed Star - Circ Perc Downstem Bong Adapter - 29.2 mm > 18.8 mm

    Price: $24.00 24.00 USD

    A spare or replacement diffuser downstem from Weed Star!
    • Quality borosilicate glass

    • Inside-cut 29.2mm > 18.8mm joint

    • Weed Star logo in blue

    • Shower head diffusion for extra bubbling

    • Choose length when ordering
    Learn More
  9. Weed Star - Slitted Diffuser Downstem - 18.8mm

    Weed Star - Slitted Diffuser Downstem - 18.8mm

    Price: $14.00 14.00 USD

    A spare or replacement downstem, from Weed Star!
    • Quality borosilicate glass

    • Sure ground glass-on-glass joints

    • Etched Weed Star logo

    • Slitted for extra bubbling and diffusion
    Learn More
  10. Bong Adapter with Diffuser

    Bong Adapter with Diffuser

    List Price: $5.60 5.60 USD

    Our Price: $2.50 2.50 USD

    You save: $3.10

  11. Pearl Adapter 14.5

    Pearl Adapter 14.5

    Price: $25.00 25.00 USD

  12. Pearl Adapter 18.8 > 14.5

    Pearl Adapter 18.8 > 14.5

    Price: $40.00 40.00 USD

  13. Weed Star - Slitted Diffuser Downstem - 29.2mm

    Weed Star - Slitted Diffuser Downstem - 29.2mm

    Price: $20.00 20.00 USD

    A spare or replacement diffuser downstem from Weed Star!
    • Sure ground glass-on-glass joints

    • Weed Star logo in blue

    • Slitted for extra bubbling and diffusion

    • Length 12.5 cm / 4.9 inch
  14. Learn More
  • Weed Star - Pearl Diffuser Downstem - 14.5mm

    Weed Star - Pearl Diffuser Downstem - 14.5mm

    Price: $13.99 13.99 USD

    A spare or replacement diffuser downstem from Weed Star!
    • Quality borosilicate glass

    • Sure ground glass-on-glass 14.5mm > 14.5mm joints

    • Weed Star logo in blue

    • Flame-polished piercings for extra bubbling and diffusion

    • Choose length when ordering
    Learn More
  • Weed Star - Removable Dome Perc with Piercings - 18.8mm Male Joint

    Weed Star - Removable Dome Perc with Piercings - 18.8mm Male Joint

    Price: $10.00 10.00 USD

    Interchangeable bong perc for mix and match fun!
    • Sure ground glass-on-glass male joint

    • Blue glass loop at top for easy maneuvering with metal hook

    • Fits Weed Star's Mahony and Mad Professor 2.0 (not 3.0)

    • Fits any removable perc bong with 18.8mm female joint

    Learn More
  • Black Leaf - Inside-Cut Vortex Diffuser Downstem

    Black Leaf - Inside-Cut Vortex Diffuser Downstem

    Price: $12.50 12.50 USD

    Adds powerful diffusion, available in various lengths!
    • High-quality borosilicate glass

    • Sure ground inside-cut glass-on-glass joint

    • 10-slit Vortex percolator

    • Black Leaf logo

    • Choose downstem length when ordering


    Learn More
  • Blaze Glass - Shower Perc Diffuser Adapter Downstem - 29.2mm > 18.8mm

    Blaze Glass - Shower Perc Diffuser Adapter Downstem - 29.2mm > 18.8mm

    Price: $29.00 29.00 USD

    A frosted glass shower perc diffuser and adapter in one!
    • Inside-cut glass-on-glass joint

    • 10-slit circular percolator

    • Downstem length from joint to perc: 12cm / 4.7"
    Learn More
  • 2K Diffuser Beads - Choice of 9 colors

    2K Diffuser Beads - Choice of 9 colors

    Price: $15.00 15.00 USD

    Diffuser beads for your bong that cool down smoke and make hundreds more bubbles!
    • Ships from the USA

    • Jar of 500-600 beads

    • Bead diameter is 6mm / .25 inches

    • Reusable and easy to clean

    • Cap with ash poker underneath

    • Choose from several colors, as available
    Learn More
  • G-Spot Glass - Diffusor Rings

    G-Spot Glass - Diffusor Rings

    Price: $24.00 24.00 USD

    Get bubbly, cool, filtered smoke with G-Spot's diffusion rings!
    • Reusable and easy to clean

    • Choose 10mm diameter (not for ice bongs) or 6mm diameter

    Learn More
  • Black Leaf - Inside-Cut Shower Head Perc Diffuser Downstem

    Black Leaf - Inside-Cut Shower Head Perc Diffuser Downstem

    Price: $12.00 12.00 USD

    Add shower perc diffusion to any set-up, available in various lengths!
    • High-quality borosilicate glass

    • Sure ground inside-cut glass-on-glass joint

    • 10-slit circular percolator

    • Black Leaf logo

    • Choose downstem length when ordering


    Learn More
  • Blaze Glass - Diffuser Adapter Downstem - 29.2mm > 18.8mm

    Blaze Glass - Diffuser Adapter Downstem - 29.2mm > 18.8mm

    Price: $25.00 25.00 USD

    A 4x4 diffuser and adapter in one!
    • Inside-cut glass-on-glass joint

    • Downstem length: 15.5cm / 6.1 inches

    • Blaze Glass logo in high-gloss silver

    Learn More
  • Glass Diffuser Downstem with Bowl - Choice of 5 colors

    Glass Diffuser Downstem with Bowl - Choice of 5 colors

    Price: $109.00 109.00 USD

    Inside out slitted diffuser downtube with worked stem and bowl!
    • Made in the USA

    • Made from high-quality borosilicate glass

    • Choose 11.5cm, 14cm or 16cm length

    • Choose color combination: aqua/black/white, black/white, green/black/white, multi-color or rasta



    All American Glass Works items are made to order and will dispatch within 3 to 7 business days. Learn More
  • G-Spot Glass - Diffuser Downtube

    G-Spot Glass - Diffuser Downtube

    Price: $29.00 29.00 USD

    A diffuser downstem from G-Spot!

    • Made in Germany

    • G-Spot logo in black outline on top joint

    • Sealed and pierced end

    • Choose joint size, then length
    Learn More
  • ROOR - Glass Pearl Diffuser Downstem

    ROOR - Glass Pearl Diffuser Downstem

    Price: $39.00 39.00 USD

    ROOR's pearl diffuser downstem for a smooth toke!
    • Made in Germany

    • High quality Schott-Duran glass

    • ROOR logo in white

    • Choose joint size and tube length

    Learn More
  • SI Pipes - Glass Diffuser Downstem - 18.8mm

    SI Pipes - Glass Diffuser Downstem - 18.8mm

    Price: $26.00 26.00 USD

    SI Pipes’ diffuser downstem for a smooth toke!

    • Made in the USA

    • High quality glass

    • SI Pipes logo in black

    • 18.8mm joint size

    Learn More
  • 25 Item(s)

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    Set Descending Direction
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