All Cranktank Kits will now come with the FRAME BAG STYLE cap aligned for improved frame bag clearance. The alternative STANDARD STYLE cap available by request. (See product gallery for images.)

Chose either Top Loading Tube Keeper (secure and easy to use) or Side Loading Tube Keeper for even more holding power.  (See gallery for images of the two styles.)


Cranktank3, having a capacity of 3 litres (0.8 US Gallons, 100 fluid oz approx.) is the smaller sibling to the Cranktank4. Cranktank3 will find favour with those all day riders and racers as well as with the traveller in milder climes. It looks a little different to the 4 but the unique design features that make the 4 such a universal fit for double triangle frames remain. In fact, because of it’s smaller size, sitting approx 37mm (1.5 inches) lower in the frame, the fit is even more universal and offers some critical extra space for a larger part frame bag. It is also approximately 10mm (0.4 inches) narrower for a little more calf clearance for those narrow Q factor bikes.

CARBON FRAME? Consider using the Wedgie Mount to eliminate direct contact.  

Available in either Translucent Grey or Translucent White/Fleck. Water level is easily visible with either option.

(Note: Current image shows opaque grey pre-production model. See gallery for actual colours. )

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Available in either Translucent Grey or Translucent White/Fleck.  Water level is easily visible with either option. (Note: Current images show opaque grey pre-production model. See gallery for actual colours)


  • Enough capacity for a big day out on the bike
  • Easy and safe access for drinking while on the move via the insulated drinking tube
  • Even greater space efficiency giving more room for larger part frame bags
  • Minimal impact on handling when full positioned low and central on the bike
  • Securely mounted but still quick and easy to remove
  • Robust and lightweight
  • Fits even more conventional double triangle frames



  • Capacity: 3 litres (0.8 US Gallons)
  • Fitted weight: Approx. 450 grams
  • Materials: Various (Tank is potable water grade polyethylene)
  • Major components are manufactured in Australia. Some ancilliary components imported.
  • Water level is externally visible for both Trans White/Fleck and Grey Translucent models.
  • Can also be used with the Wedgie Mount and Plain Cap


Kit Includes

  • Cranktank3 tank with rubber contact pads applied.
  • QR Cap with immersion tube  (Either Standard Style or Frame Bag Style)
  • Insulated Hydration Tube with QR Fitting and Bite Valve
  • 1 Tube Keeper Clip (Either Top or Side Loading Style)
  • One 200 x 50 mm Anti-abrasion tape
  • 2 x Large “D” Buckle Velcro Straps (Tank mounting)
  • 2 x 280 mm Velcro Strips (Hose retention as required)
  • One 100 x 25 x 1.5 mm  strip self adhesive rubber
  • 50mm piece Heat Shrink Tubing
  • 2 x Cable/Zip Ties (For Tube Keeper mounting)


Additional information

Weight 820 g
Dimensions 29 × 29 × 13 cm
Tank Colour

Translucent White/Fleck, Translucent Grey

Fittings Colour

Sky Blue, Granite Grey