The Shiv Disc features two Fuelcells, Hydration and Nutrition.  The Nutrition Fuelcell is stored in the downtube. The Nutrition Fuelcell is capable of holding 10-12 gels or 4-5 bars.  Tools and a flat kit may also be stored in the Nutrition Fuelcell or using a SWAT wrap inside the downtube beneath the Nutrition Fuelcell.

The Hydration Fuelcell is stored within the reservoir behind the seatpost.  There is a nut/bolt that pinches the reservoir on a "knuckle" by the top tube. This is a similar nut/bolt as our saddle rail clamps.

A second bolt draws the reservoir to the seat tube - this bolt is threaded through the top water bottle rivnut on the seat tube, then threaded into a rivnut in the reservoir. 


The Hydration Fuelcell may be installed without removing the reservoir.  And the Reservoir may be used without the Fuelcell, however it should be noted that the lid for the Reservoir is the top of the Hydration Fuelcell.

The capacity of the Hydration Fuelcell is up to 1.5L - depending on frame size: 

The numbers below don’t include the hose (which actually adds about 100mL).

XS – 1.1L

S – 1.15L

M – 1.3L

L – 1.4L

Hydration Fuelcells are specific to the frame size and may not be easily adapted to a work on another size.

Replacement Fuelcells and Reservoirs are available.